|
|
Rosetta's Self-Portrait
| title |
Rosetta's Self-Portrait |
| description |
The European Space Agency's Rosetta comet-chaser took this picture of itself in space. The CIVA micro-imager on the Philae lander returned this image as part of its testing in May 2004. The back of a solar panel is seen here, with contours on the panel are illuminated by sunlight and surfaces of the spacecraft main body are recognisable at lower right. *Image Credit*: CIVA/Philae Consortium/ESA |
|
Hubble Maps the Cosmic Web o
…
| Title |
Hubble Maps the Cosmic Web of "Clumpy" Dark Matter in 3-D |
| General Information |
What is an American Astronomical Society Meeting release? A major news announcement issued at an American Astronomical Society meeting, the premier astronomy conference. An international team of astronomers using NASA's Hubble Space Telescope has created a three-dimensional map that provides the first direct look at the large-scale distribution of dark matter in the universe. Read more: * NASA Press Release [ http://hubblesite.org/newscenter/archive/releases/2007/01/text/ ] * The Full Story [ http://hubblesite.org/newscenter/archive/releases/2007/01/full/ ] |
|
Hubble Maps the Cosmic Web o
…
| Title |
Hubble Maps the Cosmic Web of "Clumpy" Dark Matter in 3-D |
| General Information |
What is an American Astronomical Society Meeting release? A major news announcement issued at an American Astronomical Society meeting, the premier astronomy conference. An international team of astronomers using NASA's Hubble Space Telescope has created a three-dimensional map that provides the first direct look at the large-scale distribution of dark matter in the universe. Read more: * NASA Press Release [ http://hubblesite.org/newscenter/archive/releases/2007/01/text/ ] * The Full Story [ http://hubblesite.org/newscenter/archive/releases/2007/01/full/ ] |
|
Hubble Maps the Cosmic Web o
…
| Title |
Hubble Maps the Cosmic Web of "Clumpy" Dark Matter in 3-D |
| General Information |
What is an American Astronomical Society Meeting release? A major news announcement issued at an American Astronomical Society meeting, the premier astronomy conference. An international team of astronomers using NASA's Hubble Space Telescope has created a three-dimensional map that provides the first direct look at the large-scale distribution of dark matter in the universe. Read more: * NASA Press Release [ http://hubblesite.org/newscenter/archive/releases/2007/01/text/ ] * The Full Story [ http://hubblesite.org/newscenter/archive/releases/2007/01/full/ ] |
|
Hubble Maps the Cosmic Web o
…
| Title |
Hubble Maps the Cosmic Web of "Clumpy" Dark Matter in 3-D |
| General Information |
What is an American Astronomical Society Meeting release? A major news announcement issued at an American Astronomical Society meeting, the premier astronomy conference. An international team of astronomers using NASA's Hubble Space Telescope has created a three-dimensional map that provides the first direct look at the large-scale distribution of dark matter in the universe. Read more: * NASA Press Release [ http://hubblesite.org/newscenter/archive/releases/2007/01/text/ ] * The Full Story [ http://hubblesite.org/newscenter/archive/releases/2007/01/full/ ] |
|
Hubble Maps the Cosmic Web o
…
| Title |
Hubble Maps the Cosmic Web of "Clumpy" Dark Matter in 3-D |
| General Information |
What is an American Astronomical Society Meeting release? A major news announcement issued at an American Astronomical Society meeting, the premier astronomy conference. An international team of astronomers using NASA's Hubble Space Telescope has created a three-dimensional map that provides the first direct look at the large-scale distribution of dark matter in the universe. Read more: * NASA Press Release [ http://hubblesite.org/newscenter/archive/releases/2007/01/text/ ] * The Full Story [ http://hubblesite.org/newscenter/archive/releases/2007/01/full/ ] |
|
Hubble Maps the Cosmic Web o
…
| Title |
Hubble Maps the Cosmic Web of "Clumpy" Dark Matter in 3-D |
| General Information |
What is an American Astronomical Society Meeting release? A major news announcement issued at an American Astronomical Society meeting, the premier astronomy conference. An international team of astronomers using NASA's Hubble Space Telescope has created a three-dimensional map that provides the first direct look at the large-scale distribution of dark matter in the universe. Read more: * NASA Press Release [ http://hubblesite.org/newscenter/archive/releases/2007/01/text/ ] * The Full Story [ http://hubblesite.org/newscenter/archive/releases/2007/01/full/ ] |
|
Hubble Maps the Cosmic Web o
…
| Title |
Hubble Maps the Cosmic Web of "Clumpy" Dark Matter in 3-D |
| General Information |
What is an American Astronomical Society Meeting release? A major news announcement issued at an American Astronomical Society meeting, the premier astronomy conference. An international team of astronomers using NASA's Hubble Space Telescope has created a three-dimensional map that provides the first direct look at the large-scale distribution of dark matter in the universe. Read more: * NASA Press Release [ http://hubblesite.org/newscenter/archive/releases/2007/01/text/ ] * The Full Story [ http://hubblesite.org/newscenter/archive/releases/2007/01/full/ ] |
|
Hubble Maps the Cosmic Web o
…
| Title |
Hubble Maps the Cosmic Web of "Clumpy" Dark Matter in 3-D |
| General Information |
What is an American Astronomical Society Meeting release? A major news announcement issued at an American Astronomical Society meeting, the premier astronomy conference. An international team of astronomers using NASA's Hubble Space Telescope has created a three-dimensional map that provides the first direct look at the large-scale distribution of dark matter in the universe. Read more: * NASA Press Release [ http://hubblesite.org/newscenter/archive/releases/2007/01/text/ ] * The Full Story [ http://hubblesite.org/newscenter/archive/releases/2007/01/full/ ] |
|
Hubble Maps the Cosmic Web o
…
| Title |
Hubble Maps the Cosmic Web of "Clumpy" Dark Matter in 3-D |
| General Information |
What is an American Astronomical Society Meeting release? A major news announcement issued at an American Astronomical Society meeting, the premier astronomy conference. An international team of astronomers using NASA's Hubble Space Telescope has created a three-dimensional map that provides the first direct look at the large-scale distribution of dark matter in the universe. Read more: * NASA Press Release [ http://hubblesite.org/newscenter/archive/releases/2007/01/text/ ] * The Full Story [ http://hubblesite.org/newscenter/archive/releases/2007/01/full/ ] |
|
Hubble Maps the Cosmic Web o
…
| Title |
Hubble Maps the Cosmic Web of "Clumpy" Dark Matter in 3-D |
| General Information |
What is an American Astronomical Society Meeting release? A major news announcement issued at an American Astronomical Society meeting, the premier astronomy conference. An international team of astronomers using NASA's Hubble Space Telescope has created a three-dimensional map that provides the first direct look at the large-scale distribution of dark matter in the universe. Read more: * NASA Press Release [ http://hubblesite.org/newscenter/archive/releases/2007/01/text/ ] * The Full Story [ http://hubblesite.org/newscenter/archive/releases/2007/01/full/ ] |
|
Global Seasonal Landcover in
…
| Title |
Global Seasonal Landcover in 2004 |
| Abstract |
The Blue Marble Next Generation dataset provides a monthly global cloud-free true-color picture of the Earth's landcover at a 500-meter spatial resolution. This visualization of the dataset shows seasonal variations such as snowfall, spring greening and droughts in a seamless fashion, thereby heightening awareness of changes in the Earth's climate. Here we tour the globe, viewing seasonal landcover over many continents. This dataset is derived from imagery taken in 2004 by the MODIS instrument on the Terra satellite. |
| Completed |
2005-10-07 |
|
Ambrym Volcano Ash Plume
| Title |
Ambrym Volcano Ash Plume |
| Description |
In the South Pacific Ocean, the Ambyrm Volcano, originally captured in an image taken on April 27, continued to erupt in mid-May 2004. This image was acquired by the Moderate Resolution Imaging Spectroradiometer (MODIS) on the Aqua satellite on May 15. Vanuatu Island is pictured at the top left of the image, and a plume of volcanic ash is drifting southeastward from Ambrym, which is near the Island?s center. MODIS detected a thermal signature (marked in yellow) in addition to the ash plume. The scene is available in other resolutions. Image courtesy Jeff Schmaltz, MODIS Rapid Response Team, NASA-GSFC |
|
Eruption of Anatahan
| Title |
Eruption of Anatahan |
| Description |
The Anatahan Volcano rumbled back to life on January 6, 2005, and when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) passed over on NASA's Aqua [ http://aqua.nasa.gov/ ] satellite the next day, a thin plume of ash still rose from the volcano. The volcano is located on a 9-kilometer-wide island in the Northern Mariana Islands of the North Pacific. Though the youngest flows on the volcano were no more than a few hundred years old, no eruption had been recorded at the volcano until May 10, 2003. MODIS captured the volcano's first recorded eruption [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=10665 ], which sent large clouds of ash over the Pacific. After its initial eruption, the volcano emitted plumes of ash and steam throughout May 2003 before quieting for a year. In May 2004, earthquakes and ash emissions began again and continued intermittently through August 2004. Now the volcano is beginning to erupt again. Air traffic has been diverted around the most recent eruption. Volcanic ash can clog jet engines, causing engine failure within minutes. NASA image created by Jesse Allen, Earth Observatory, using data obtained from the MODIS Rapid Response team. |
|
Pinacates Biosphere Reserve
| Title |
Pinacates Biosphere Reserve |
| Description |
The Pinacates region of Mexico's Sonoran Desert is one of the most unique and striking landscapes in North America. Located just a few miles south of the Mexico-Arizona border, this volcanic field originated with the rifting of the Gulf of California millions of years ago, but the features seen today (volcanic peaks, lava flows, cinder cones and collapsed craters) formed in the late Pleistocene period (2 million to 11,000 years ago). The volcanic range is surrounded by one of North America's largest dune fields, Gran Desierto. The natural history of the region includes thousands of years of human occupation, it is the aboriginal homeland of the O'Odham tribe, also known as the Papago. The region also served as an early training site for Apollo astronauts in the 1960s. This ecosystem supports a wonderfully diverse northern Sonoran desert assemblage of plants and animals, including large saguaro cacti, ocotillo, many species of reptiles, amphibians, and insects. In fact, the name Pinacate is derived from "pinacatl," the Aztec name for the desert stink beetle, which is common in the region. The natural and cultural resource management of the region, including the archeological sites and the high biodiversity, is now guaranteed: the site was declared a UNESCO Biosphere Reserve in 1993. Early in May 2004, the new Space Station crew (ISS-9) obtained high-resolution images of the Pinacates, allowing for detailed observations of the surface features. One example is a large volcanic crater (see box, and detail below) called Crater Elegante which is one of the most prominent and interesting features of the Pinacates. For scale, the diameter of the crater is approximately 1500 meters. These detailed images can be used to monitor vegetation and development in the region. Astronaut photographs ISS009-E-5953 [ http://eol.jsc.nasa.gov/scripts/sseop/photo.pl?mission=ISS009&roll=E&frame=5953 ] and 5944 [ http://eol.jsc.nasa.gov/scripts/sseop/photo.pl?mission=ISS009&roll=E&frame=5944 ] were acquired May 7, 2004 with a Kodak DCS760 digital camera equipped with 80 and 400 mm lenses (respectively), and are provided by the Earth Observations Laboratory, Johnson Space Center. The International Space Station Program [ http://spaceflight.nasa.gov/ ] supports the laboratory to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC Gateway to Astronaut Photography of Earth. [ http://eol.jsc.nasa.gov/ ] |
|
Pinacates Biosphere Reserve
| Title |
Pinacates Biosphere Reserve |
| Description |
The Pinacates region of Mexico's Sonoran Desert is one of the most unique and striking landscapes in North America. Located just a few miles south of the Mexico-Arizona border, this volcanic field originated with the rifting of the Gulf of California millions of years ago, but the features seen today (volcanic peaks, lava flows, cinder cones and collapsed craters) formed in the late Pleistocene period (2 million to 11,000 years ago). The volcanic range is surrounded by one of North America's largest dune fields, Gran Desierto. The natural history of the region includes thousands of years of human occupation, it is the aboriginal homeland of the O'Odham tribe, also known as the Papago. The region also served as an early training site for Apollo astronauts in the 1960s. This ecosystem supports a wonderfully diverse northern Sonoran desert assemblage of plants and animals, including large saguaro cacti, ocotillo, many species of reptiles, amphibians, and insects. In fact, the name Pinacate is derived from "pinacatl," the Aztec name for the desert stink beetle, which is common in the region. The natural and cultural resource management of the region, including the archeological sites and the high biodiversity, is now guaranteed: the site was declared a UNESCO Biosphere Reserve in 1993. Early in May 2004, the new Space Station crew (ISS-9) obtained high-resolution images of the Pinacates, allowing for detailed observations of the surface features. One example is a large volcanic crater (see box, and detail below) called Crater Elegante which is one of the most prominent and interesting features of the Pinacates. For scale, the diameter of the crater is approximately 1500 meters. These detailed images can be used to monitor vegetation and development in the region. Astronaut photographs ISS009-E-5953 [ http://eol.jsc.nasa.gov/scripts/sseop/photo.pl?mission=ISS009&roll=E&frame=5953 ] and 5944 [ http://eol.jsc.nasa.gov/scripts/sseop/photo.pl?mission=ISS009&roll=E&frame=5944 ] were acquired May 7, 2004 with a Kodak DCS760 digital camera equipped with 80 and 400 mm lenses (respectively), and are provided by the Earth Observations Laboratory, Johnson Space Center. The International Space Station Program [ http://spaceflight.nasa.gov/ ] supports the laboratory to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC Gateway to Astronaut Photography of Earth. [ http://eol.jsc.nasa.gov/ ] |
|
Pinacates Biosphere Reserve
| Title |
Pinacates Biosphere Reserve |
| Description |
The Pinacates region of Mexico's Sonoran Desert is one of the most unique and striking landscapes in North America. Located just a few miles south of the Mexico-Arizona border, this volcanic field originated with the rifting of the Gulf of California millions of years ago, but the features seen today (volcanic peaks, lava flows, cinder cones and collapsed craters) formed in the late Pleistocene period (2 million to 11,000 years ago). The volcanic range is surrounded by one of North America's largest dune fields, Gran Desierto. The natural history of the region includes thousands of years of human occupation, it is the aboriginal homeland of the O'Odham tribe, also known as the Papago. The region also served as an early training site for Apollo astronauts in the 1960s. This ecosystem supports a wonderfully diverse northern Sonoran desert assemblage of plants and animals, including large saguaro cacti, ocotillo, many species of reptiles, amphibians, and insects. In fact, the name Pinacate is derived from "pinacatl," the Aztec name for the desert stink beetle, which is common in the region. The natural and cultural resource management of the region, including the archeological sites and the high biodiversity, is now guaranteed: the site was declared a UNESCO Biosphere Reserve in 1993. Early in May 2004, the new Space Station crew (ISS-9) obtained high-resolution images of the Pinacates, allowing for detailed observations of the surface features. One example is a large volcanic crater (see box, and detail below) called Crater Elegante which is one of the most prominent and interesting features of the Pinacates. For scale, the diameter of the crater is approximately 1500 meters. These detailed images can be used to monitor vegetation and development in the region. Astronaut photographs ISS009-E-5953 [ http://eol.jsc.nasa.gov/scripts/sseop/photo.pl?mission=ISS009&roll=E&frame=5953 ] and 5944 [ http://eol.jsc.nasa.gov/scripts/sseop/photo.pl?mission=ISS009&roll=E&frame=5944 ] were acquired May 7, 2004 with a Kodak DCS760 digital camera equipped with 80 and 400 mm lenses (respectively), and are provided by the Earth Observations Laboratory, Johnson Space Center. The International Space Station Program [ http://spaceflight.nasa.gov/ ] supports the laboratory to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC Gateway to Astronaut Photography of Earth. [ http://eol.jsc.nasa.gov/ ] |
|
Severe Floods Sweep Across H
…
| Title |
Severe Floods Sweep Across Haiti and the Dominican Republic |
| Description |
Over the past week, both Haiti and the Dominican Republic, the two countries on the island of Hispaniola, have been ravaged by severe flooding after several days of heavy rain. Hundreds have perished in the two countries as a direct result of mud slides and flash flooding. The hardest hit area was in and around the town of Jimani in the southwestern part of the Dominican Republic near the border with Haiti. The Soliel River overflowed its banks before dawn on the morning of the 25th of May 2004 catching the town by surprise. A trough of low pressure across the central Caribbean provided the impetus for the numerous showers and heavy rains. The effect was amplified as moisture-laden low-level southerly winds from the Caribbean interacted with the topography of the island. The Dominican weather service reported that 10 inches of rain fell near Jimani in just 24 hours. The Tropical Rainfall Measuring Mission satellite which was launched in November of 1997 uses both passive and active sensors to measure rainfall over the global tropics from space. The TRMM-based, near-real time Multi-satellite Precipitation Analysis (MPA) at the NASA Goddard Space Flight Center provides quantitative rainfall estimates over the global tropics. The above images show rainfall accumulation between May 18 and May 25, 2004. The first lower shows MPA rainfall totals over the northern Caribbean. The red areas indicate rainfall totals in excess of 14 inches over most of Hispaniola. Darker red areas along the border between Haiti and the Dominican Republic show rainfall totals for the period approaching 24 inches. The second image provides a close-in view of rainfall contours over the same period. It shows that the highest totals are right along the border between Haiti and the Dominican Republic and over the northeastern part of the Dominican Republic and exceed 550 mm (21.7 inches). The above animations show that the bulk of the rain appears to have fallen in a single day on May 23. This graph confirms what the animations show in more detail. It shows the instantaneous average rainfall over a 250-km radius centered at 19N 72W (near the center of the border between Haiti and the Dominican Republic) over the period. It reveals that most of the rain did, in fact, fall on the 23rd of May although significant amounts fell on May 22 and 24 as well. The dates begin at 00Z (midnight Greenwich Mean Time, or 7 pm local time). This graph shows the accumulated rainfall with time for the same area and period. By 00Z on the 25th, an average of 300 mm (11.8 inches) of rain had fallen over the area with a maximum single point accumulation of 598 mm (23.5 inches).TRMM [ http://trmm.gsfc.nasa.gov/ ] is a joint mission between NASA and the Japanese space agency JAXA. Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang |
|
Severe Floods Sweep Across H
…
| Title |
Severe Floods Sweep Across Haiti and the Dominican Republic |
| Description |
Over the past week, both Haiti and the Dominican Republic, the two countries on the island of Hispaniola, have been ravaged by severe flooding after several days of heavy rain. Hundreds have perished in the two countries as a direct result of mud slides and flash flooding. The hardest hit area was in and around the town of Jimani in the southwestern part of the Dominican Republic near the border with Haiti. The Soliel River overflowed its banks before dawn on the morning of the 25th of May 2004 catching the town by surprise. A trough of low pressure across the central Caribbean provided the impetus for the numerous showers and heavy rains. The effect was amplified as moisture-laden low-level southerly winds from the Caribbean interacted with the topography of the island. The Dominican weather service reported that 10 inches of rain fell near Jimani in just 24 hours. The Tropical Rainfall Measuring Mission satellite which was launched in November of 1997 uses both passive and active sensors to measure rainfall over the global tropics from space. The TRMM-based, near-real time Multi-satellite Precipitation Analysis (MPA) at the NASA Goddard Space Flight Center provides quantitative rainfall estimates over the global tropics. The above images show rainfall accumulation between May 18 and May 25, 2004. The first lower shows MPA rainfall totals over the northern Caribbean. The red areas indicate rainfall totals in excess of 14 inches over most of Hispaniola. Darker red areas along the border between Haiti and the Dominican Republic show rainfall totals for the period approaching 24 inches. The second image provides a close-in view of rainfall contours over the same period. It shows that the highest totals are right along the border between Haiti and the Dominican Republic and over the northeastern part of the Dominican Republic and exceed 550 mm (21.7 inches). The above animations show that the bulk of the rain appears to have fallen in a single day on May 23. This graph confirms what the animations show in more detail. It shows the instantaneous average rainfall over a 250-km radius centered at 19N 72W (near the center of the border between Haiti and the Dominican Republic) over the period. It reveals that most of the rain did, in fact, fall on the 23rd of May although significant amounts fell on May 22 and 24 as well. The dates begin at 00Z (midnight Greenwich Mean Time, or 7 pm local time). This graph shows the accumulated rainfall with time for the same area and period. By 00Z on the 25th, an average of 300 mm (11.8 inches) of rain had fallen over the area with a maximum single point accumulation of 598 mm (23.5 inches).TRMM [ http://trmm.gsfc.nasa.gov/ ] is a joint mission between NASA and the Japanese space agency JAXA. Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang |
|
Severe Floods Sweep Across H
…
| Title |
Severe Floods Sweep Across Haiti and the Dominican Republic |
| Description |
Over the past week, both Haiti and the Dominican Republic, the two countries on the island of Hispaniola, have been ravaged by severe flooding after several days of heavy rain. Hundreds have perished in the two countries as a direct result of mud slides and flash flooding. The hardest hit area was in and around the town of Jimani in the southwestern part of the Dominican Republic near the border with Haiti. The Soliel River overflowed its banks before dawn on the morning of the 25th of May 2004 catching the town by surprise. A trough of low pressure across the central Caribbean provided the impetus for the numerous showers and heavy rains. The effect was amplified as moisture-laden low-level southerly winds from the Caribbean interacted with the topography of the island. The Dominican weather service reported that 10 inches of rain fell near Jimani in just 24 hours. The Tropical Rainfall Measuring Mission satellite which was launched in November of 1997 uses both passive and active sensors to measure rainfall over the global tropics from space. The TRMM-based, near-real time Multi-satellite Precipitation Analysis (MPA) at the NASA Goddard Space Flight Center provides quantitative rainfall estimates over the global tropics. The above images show rainfall accumulation between May 18 and May 25, 2004. The first lower shows MPA rainfall totals over the northern Caribbean. The red areas indicate rainfall totals in excess of 14 inches over most of Hispaniola. Darker red areas along the border between Haiti and the Dominican Republic show rainfall totals for the period approaching 24 inches. The second image provides a close-in view of rainfall contours over the same period. It shows that the highest totals are right along the border between Haiti and the Dominican Republic and over the northeastern part of the Dominican Republic and exceed 550 mm (21.7 inches). The above animations show that the bulk of the rain appears to have fallen in a single day on May 23. This graph confirms what the animations show in more detail. It shows the instantaneous average rainfall over a 250-km radius centered at 19N 72W (near the center of the border between Haiti and the Dominican Republic) over the period. It reveals that most of the rain did, in fact, fall on the 23rd of May although significant amounts fell on May 22 and 24 as well. The dates begin at 00Z (midnight Greenwich Mean Time, or 7 pm local time). This graph shows the accumulated rainfall with time for the same area and period. By 00Z on the 25th, an average of 300 mm (11.8 inches) of rain had fallen over the area with a maximum single point accumulation of 598 mm (23.5 inches).TRMM [ http://trmm.gsfc.nasa.gov/ ] is a joint mission between NASA and the Japanese space agency JAXA. Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang |
|
Severe Floods Sweep Across H
…
| Title |
Severe Floods Sweep Across Haiti and the Dominican Republic |
| Description |
Over the past week, both Haiti and the Dominican Republic, the two countries on the island of Hispaniola, have been ravaged by severe flooding after several days of heavy rain. Hundreds have perished in the two countries as a direct result of mud slides and flash flooding. The hardest hit area was in and around the town of Jimani in the southwestern part of the Dominican Republic near the border with Haiti. The Soliel River overflowed its banks before dawn on the morning of the 25th of May 2004 catching the town by surprise. A trough of low pressure across the central Caribbean provided the impetus for the numerous showers and heavy rains. The effect was amplified as moisture-laden low-level southerly winds from the Caribbean interacted with the topography of the island. The Dominican weather service reported that 10 inches of rain fell near Jimani in just 24 hours. The Tropical Rainfall Measuring Mission satellite which was launched in November of 1997 uses both passive and active sensors to measure rainfall over the global tropics from space. The TRMM-based, near-real time Multi-satellite Precipitation Analysis (MPA) at the NASA Goddard Space Flight Center provides quantitative rainfall estimates over the global tropics. The above images show rainfall accumulation between May 18 and May 25, 2004. The first lower shows MPA rainfall totals over the northern Caribbean. The red areas indicate rainfall totals in excess of 14 inches over most of Hispaniola. Darker red areas along the border between Haiti and the Dominican Republic show rainfall totals for the period approaching 24 inches. The second image provides a close-in view of rainfall contours over the same period. It shows that the highest totals are right along the border between Haiti and the Dominican Republic and over the northeastern part of the Dominican Republic and exceed 550 mm (21.7 inches). The above animations show that the bulk of the rain appears to have fallen in a single day on May 23. This graph confirms what the animations show in more detail. It shows the instantaneous average rainfall over a 250-km radius centered at 19N 72W (near the center of the border between Haiti and the Dominican Republic) over the period. It reveals that most of the rain did, in fact, fall on the 23rd of May although significant amounts fell on May 22 and 24 as well. The dates begin at 00Z (midnight Greenwich Mean Time, or 7 pm local time). This graph shows the accumulated rainfall with time for the same area and period. By 00Z on the 25th, an average of 300 mm (11.8 inches) of rain had fallen over the area with a maximum single point accumulation of 598 mm (23.5 inches).TRMM [ http://trmm.gsfc.nasa.gov/ ] is a joint mission between NASA and the Japanese space agency JAXA. Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang |
|
Severe Floods Sweep Across H
…
| Title |
Severe Floods Sweep Across Haiti and the Dominican Republic |
| Description |
Over the past week, both Haiti and the Dominican Republic, the two countries on the island of Hispaniola, have been ravaged by severe flooding after several days of heavy rain. Hundreds have perished in the two countries as a direct result of mud slides and flash flooding. The hardest hit area was in and around the town of Jimani in the southwestern part of the Dominican Republic near the border with Haiti. The Soliel River overflowed its banks before dawn on the morning of the 25th of May 2004 catching the town by surprise. A trough of low pressure across the central Caribbean provided the impetus for the numerous showers and heavy rains. The effect was amplified as moisture-laden low-level southerly winds from the Caribbean interacted with the topography of the island. The Dominican weather service reported that 10 inches of rain fell near Jimani in just 24 hours. The Tropical Rainfall Measuring Mission satellite which was launched in November of 1997 uses both passive and active sensors to measure rainfall over the global tropics from space. The TRMM-based, near-real time Multi-satellite Precipitation Analysis (MPA) at the NASA Goddard Space Flight Center provides quantitative rainfall estimates over the global tropics. The above images show rainfall accumulation between May 18 and May 25, 2004. The first lower shows MPA rainfall totals over the northern Caribbean. The red areas indicate rainfall totals in excess of 14 inches over most of Hispaniola. Darker red areas along the border between Haiti and the Dominican Republic show rainfall totals for the period approaching 24 inches. The second image provides a close-in view of rainfall contours over the same period. It shows that the highest totals are right along the border between Haiti and the Dominican Republic and over the northeastern part of the Dominican Republic and exceed 550 mm (21.7 inches). The above animations show that the bulk of the rain appears to have fallen in a single day on May 23. This graph confirms what the animations show in more detail. It shows the instantaneous average rainfall over a 250-km radius centered at 19N 72W (near the center of the border between Haiti and the Dominican Republic) over the period. It reveals that most of the rain did, in fact, fall on the 23rd of May although significant amounts fell on May 22 and 24 as well. The dates begin at 00Z (midnight Greenwich Mean Time, or 7 pm local time). This graph shows the accumulated rainfall with time for the same area and period. By 00Z on the 25th, an average of 300 mm (11.8 inches) of rain had fallen over the area with a maximum single point accumulation of 598 mm (23.5 inches).TRMM [ http://trmm.gsfc.nasa.gov/ ] is a joint mission between NASA and the Japanese space agency JAXA. Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang |
|
Severe Floods Sweep Across H
…
| Title |
Severe Floods Sweep Across Haiti and the Dominican Republic |
| Description |
Over the past week, both Haiti and the Dominican Republic, the two countries on the island of Hispaniola, have been ravaged by severe flooding after several days of heavy rain. Hundreds have perished in the two countries as a direct result of mud slides and flash flooding. The hardest hit area was in and around the town of Jimani in the southwestern part of the Dominican Republic near the border with Haiti. The Soliel River overflowed its banks before dawn on the morning of the 25th of May 2004 catching the town by surprise. A trough of low pressure across the central Caribbean provided the impetus for the numerous showers and heavy rains. The effect was amplified as moisture-laden low-level southerly winds from the Caribbean interacted with the topography of the island. The Dominican weather service reported that 10 inches of rain fell near Jimani in just 24 hours. The Tropical Rainfall Measuring Mission satellite which was launched in November of 1997 uses both passive and active sensors to measure rainfall over the global tropics from space. The TRMM-based, near-real time Multi-satellite Precipitation Analysis (MPA) at the NASA Goddard Space Flight Center provides quantitative rainfall estimates over the global tropics. The above images show rainfall accumulation between May 18 and May 25, 2004. The first lower shows MPA rainfall totals over the northern Caribbean. The red areas indicate rainfall totals in excess of 14 inches over most of Hispaniola. Darker red areas along the border between Haiti and the Dominican Republic show rainfall totals for the period approaching 24 inches. The second image provides a close-in view of rainfall contours over the same period. It shows that the highest totals are right along the border between Haiti and the Dominican Republic and over the northeastern part of the Dominican Republic and exceed 550 mm (21.7 inches). The above animations show that the bulk of the rain appears to have fallen in a single day on May 23. This graph confirms what the animations show in more detail. It shows the instantaneous average rainfall over a 250-km radius centered at 19N 72W (near the center of the border between Haiti and the Dominican Republic) over the period. It reveals that most of the rain did, in fact, fall on the 23rd of May although significant amounts fell on May 22 and 24 as well. The dates begin at 00Z (midnight Greenwich Mean Time, or 7 pm local time). This graph shows the accumulated rainfall with time for the same area and period. By 00Z on the 25th, an average of 300 mm (11.8 inches) of rain had fallen over the area with a maximum single point accumulation of 598 mm (23.5 inches).TRMM [ http://trmm.gsfc.nasa.gov/ ] is a joint mission between NASA and the Japanese space agency JAXA. Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang |
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Severe Floods Sweep Across H
…
| Title |
Severe Floods Sweep Across Haiti and the Dominican Republic |
| Description |
Heavy rain brought tragedy to Haiti and the Dominican Republic in late May 2004. Floods and landslides devastated large areas of the island of Hispaniola, which the two countries share. Up to 2,000 people have been reported dead, and hundreds are still missing. One of the most severely affected areas was southeast Haiti, shown in this Advanced Spaceborne Thermal Emission and Reflection Radiometer [ http://asterweb.jpl.nasa.gov/ ] (ASTER) image. Taken on May 30, the image shows dark blue lakes over land that was dry on October 26, 2003. One of these lakes is said to cover much of Mapou, where thousands died. Gravel and other flood debris form shiny light blue tracks throughout the scene. Vegetation is red and bare land is grey. The severity of these floods has been blamed on deforestation. Without trees to absorb water and anchor the land, water and mud rushed into low-lying areas. Data courtesy MITI, ERSDAC, JAROS, and the U.S./Japan ASTER Science Team [ http://asterweb.jpl.nasa.gov/ ] |
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Severe Floods Sweep Across H
…
| Title |
Severe Floods Sweep Across Haiti and the Dominican Republic |
| Description |
Heavy rain brought tragedy to Haiti and the Dominican Republic in late May 2004. Floods and landslides devastated large areas of the island of Hispaniola, which the two countries share. Up to 2,000 people have been reported dead, and hundreds are still missing. One of the most severely affected areas was southeast Haiti, shown in this Advanced Spaceborne Thermal Emission and Reflection Radiometer [ http://asterweb.jpl.nasa.gov/ ] (ASTER) image. Taken on May 30, the image shows dark blue lakes over land that was dry on October 26, 2003. One of these lakes is said to cover much of Mapou, where thousands died. Gravel and other flood debris form shiny light blue tracks throughout the scene. Vegetation is red and bare land is grey. The severity of these floods has been blamed on deforestation. Without trees to absorb water and anchor the land, water and mud rushed into low-lying areas. Data courtesy MITI, ERSDAC, JAROS, and the U.S./Japan ASTER Science Team [ http://asterweb.jpl.nasa.gov/ ] |
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Tropical Cyclone 01A
| Title |
Tropical Cyclone 01A |
| Description |
Cyclone 01A hovered just off the west coast of India this past week slowly drifting parallel to the coastline without coming ashore. It began as a weak depression that formed on the 4th of May 2004 about 200 km east of the southwest coast of India in the Laccadive Sea. The system strengthened into a tropical storm the next day on the 5th with winds estimated at 35 knots (40 mph) by the Joint Typhoon Warning Center. On the 7th and 8th, the stormed reached its peak intensity of just 45 knots (52 mph) before weakening back into a depression on the 10th. The storm was responsible for 5 deaths in India from heavy rains. The Tropical Rainfall Measuring Mission (TRMM) satellite captured several images of the cyclone as it drifted northward in the western Indian Ocean. The first image taken at 21:25 UTC on 5 May 2004 shows rainfall within the storm as seen by the TRMM satellite. Rain rates in the center swath are from the TRMM Precipitation Radar (PR), and rain rates in the outer swath are from the TRMM Microwave Imager (TMI). The rain rates are overlaid on infrared (IR) data from the TRMM Visible Infrared Scanner (VIRS). This first image shows that the rain field associated with the storm is very asymmetrical with almost all of the rain falling west of the center, which lacks an eyewall, a characteristic of immature or weaker systems. Several patches of intense rain (darker reds) are embedded within a broad shield of moderate (green) to light rain (blue). The second image taken at 11:20 UTC on the 7th shows the system has not become any better organized. The area of heavy rain (dark red) is consolidated into one band, but there is still no evidence of an eyewall. In the final snapshot at 11:07 UTC on the 9th, the center is now completely devoid of rainfall without which the storm cannot survive as tropical cyclones rely on heat released from the conversion of water vapor to fuel their circulations. This image does reveal that the system is still capable of producing heavy rains over land well away from the center as shown by the dark red areas over the coastline. The TRMM-based, near-real time Multi-satellite Precipitation Analysis (MPA) at the NASA Goddard Space Flight Center monitors rainfall over the global tropics. The last image gives MPA rainfall totals for the period 3-11 May 2004 associated with the passage of the cyclone. The highest amounts on the order of 12 inches fell over water (dark red areas). However, some coastal areas in the state of Gujarat did receive up to 9 inches locally (red areas) with several areas receiving between 3 and 6 inches (green areas). TRMM is a joint mission between NASA and the Japanese space agency JAXA. Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang (SSAI/NASA GSFC). |
|
Tropical Cyclone 01A
| Title |
Tropical Cyclone 01A |
| Description |
Cyclone 01A hovered just off the west coast of India this past week slowly drifting parallel to the coastline without coming ashore. It began as a weak depression that formed on the 4th of May 2004 about 200 km east of the southwest coast of India in the Laccadive Sea. The system strengthened into a tropical storm the next day on the 5th with winds estimated at 35 knots (40 mph) by the Joint Typhoon Warning Center. On the 7th and 8th, the stormed reached its peak intensity of just 45 knots (52 mph) before weakening back into a depression on the 10th. The storm was responsible for 5 deaths in India from heavy rains. The Tropical Rainfall Measuring Mission (TRMM) satellite captured several images of the cyclone as it drifted northward in the western Indian Ocean. The first image taken at 21:25 UTC on 5 May 2004 shows rainfall within the storm as seen by the TRMM satellite. Rain rates in the center swath are from the TRMM Precipitation Radar (PR), and rain rates in the outer swath are from the TRMM Microwave Imager (TMI). The rain rates are overlaid on infrared (IR) data from the TRMM Visible Infrared Scanner (VIRS). This first image shows that the rain field associated with the storm is very asymmetrical with almost all of the rain falling west of the center, which lacks an eyewall, a characteristic of immature or weaker systems. Several patches of intense rain (darker reds) are embedded within a broad shield of moderate (green) to light rain (blue). The second image taken at 11:20 UTC on the 7th shows the system has not become any better organized. The area of heavy rain (dark red) is consolidated into one band, but there is still no evidence of an eyewall. In the final snapshot at 11:07 UTC on the 9th, the center is now completely devoid of rainfall without which the storm cannot survive as tropical cyclones rely on heat released from the conversion of water vapor to fuel their circulations. This image does reveal that the system is still capable of producing heavy rains over land well away from the center as shown by the dark red areas over the coastline. The TRMM-based, near-real time Multi-satellite Precipitation Analysis (MPA) at the NASA Goddard Space Flight Center monitors rainfall over the global tropics. The last image gives MPA rainfall totals for the period 3-11 May 2004 associated with the passage of the cyclone. The highest amounts on the order of 12 inches fell over water (dark red areas). However, some coastal areas in the state of Gujarat did receive up to 9 inches locally (red areas) with several areas receiving between 3 and 6 inches (green areas). TRMM is a joint mission between NASA and the Japanese space agency JAXA. Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang (SSAI/NASA GSFC). |
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Tropical Cyclone 01A
| Title |
Tropical Cyclone 01A |
| Description |
Cyclone 01A hovered just off the west coast of India this past week slowly drifting parallel to the coastline without coming ashore. It began as a weak depression that formed on the 4th of May 2004 about 200 km east of the southwest coast of India in the Laccadive Sea. The system strengthened into a tropical storm the next day on the 5th with winds estimated at 35 knots (40 mph) by the Joint Typhoon Warning Center. On the 7th and 8th, the stormed reached its peak intensity of just 45 knots (52 mph) before weakening back into a depression on the 10th. The storm was responsible for 5 deaths in India from heavy rains. The Tropical Rainfall Measuring Mission (TRMM) satellite captured several images of the cyclone as it drifted northward in the western Indian Ocean. The first image taken at 21:25 UTC on 5 May 2004 shows rainfall within the storm as seen by the TRMM satellite. Rain rates in the center swath are from the TRMM Precipitation Radar (PR), and rain rates in the outer swath are from the TRMM Microwave Imager (TMI). The rain rates are overlaid on infrared (IR) data from the TRMM Visible Infrared Scanner (VIRS). This first image shows that the rain field associated with the storm is very asymmetrical with almost all of the rain falling west of the center, which lacks an eyewall, a characteristic of immature or weaker systems. Several patches of intense rain (darker reds) are embedded within a broad shield of moderate (green) to light rain (blue). The second image taken at 11:20 UTC on the 7th shows the system has not become any better organized. The area of heavy rain (dark red) is consolidated into one band, but there is still no evidence of an eyewall. In the final snapshot at 11:07 UTC on the 9th, the center is now completely devoid of rainfall without which the storm cannot survive as tropical cyclones rely on heat released from the conversion of water vapor to fuel their circulations. This image does reveal that the system is still capable of producing heavy rains over land well away from the center as shown by the dark red areas over the coastline. The TRMM-based, near-real time Multi-satellite Precipitation Analysis (MPA) at the NASA Goddard Space Flight Center monitors rainfall over the global tropics. The last image gives MPA rainfall totals for the period 3-11 May 2004 associated with the passage of the cyclone. The highest amounts on the order of 12 inches fell over water (dark red areas). However, some coastal areas in the state of Gujarat did receive up to 9 inches locally (red areas) with several areas receiving between 3 and 6 inches (green areas). TRMM is a joint mission between NASA and the Japanese space agency JAXA. Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang (SSAI/NASA GSFC). |
|
Tropical Cyclone 01A
| Title |
Tropical Cyclone 01A |
| Description |
Cyclone 01A hovered just off the west coast of India this past week slowly drifting parallel to the coastline without coming ashore. It began as a weak depression that formed on the 4th of May 2004 about 200 km east of the southwest coast of India in the Laccadive Sea. The system strengthened into a tropical storm the next day on the 5th with winds estimated at 35 knots (40 mph) by the Joint Typhoon Warning Center. On the 7th and 8th, the stormed reached its peak intensity of just 45 knots (52 mph) before weakening back into a depression on the 10th. The storm was responsible for 5 deaths in India from heavy rains. The Tropical Rainfall Measuring Mission (TRMM) satellite captured several images of the cyclone as it drifted northward in the western Indian Ocean. The first image taken at 21:25 UTC on 5 May 2004 shows rainfall within the storm as seen by the TRMM satellite. Rain rates in the center swath are from the TRMM Precipitation Radar (PR), and rain rates in the outer swath are from the TRMM Microwave Imager (TMI). The rain rates are overlaid on infrared (IR) data from the TRMM Visible Infrared Scanner (VIRS). This first image shows that the rain field associated with the storm is very asymmetrical with almost all of the rain falling west of the center, which lacks an eyewall, a characteristic of immature or weaker systems. Several patches of intense rain (darker reds) are embedded within a broad shield of moderate (green) to light rain (blue). The second image taken at 11:20 UTC on the 7th shows the system has not become any better organized. The area of heavy rain (dark red) is consolidated into one band, but there is still no evidence of an eyewall. In the final snapshot at 11:07 UTC on the 9th, the center is now completely devoid of rainfall without which the storm cannot survive as tropical cyclones rely on heat released from the conversion of water vapor to fuel their circulations. This image does reveal that the system is still capable of producing heavy rains over land well away from the center as shown by the dark red areas over the coastline. The TRMM-based, near-real time Multi-satellite Precipitation Analysis (MPA) at the NASA Goddard Space Flight Center monitors rainfall over the global tropics. The last image gives MPA rainfall totals for the period 3-11 May 2004 associated with the passage of the cyclone. The highest amounts on the order of 12 inches fell over water (dark red areas). However, some coastal areas in the state of Gujarat did receive up to 9 inches locally (red areas) with several areas receiving between 3 and 6 inches (green areas). TRMM is a joint mission between NASA and the Japanese space agency JAXA. Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang (SSAI/NASA GSFC). |
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Tropical Storm brings Heavy
…
| Title |
Tropical Storm brings Heavy Rains to Burma |
| Description |
Unnamed tropical storm 02B came ashore along the northwest coast of Burma (Myanmar) on the 19th of May 2004 bringing with it strong winds and heavy rains. The system formed in the northern Bay of Bengal on May 17, and moved east as a strong tropical storm with maximum sustained winds estimated at 60 knots (69 mph) by the Joint Typhoon Warning Center as it crossed the coast of Burma. The system came ashore near the port city of Sittwe not far from the border with Bangladesh. The TRMM-based, near-real time Multi-satellite Precipitation Analysis (MPA) at the NASA Goddard Space Flight Center monitors rainfall over the global tropics. MPA rainfall totals for the region surrounding the northern Bay of Bengal are shown for the period 12-19 May 2004. Up to 20 inches of rain (darkest red areas) fell over the foothills and southern slopes of the Himalayan Mountains over northeastern Indian and Bhutan and along the north east coastline of the Bay of Bengal over far western Burma and southern Bangladesh. The heavy rain over western Burma and southern Bangladesh was a direct result of tropical storm 02B, while most of the heavy rain farther north along the slopes of the Himalayas was a result of low pressure centered over northern India and Nepal drawing moisture up from the Bay of Bengal earlier in the period. TRMM is a joint mission between NASA and the Japanese space agency JAXA. Image produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang (SSAI/NASA GSFC). |
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Tropical Storm brings Heavy
…
| Title |
Tropical Storm brings Heavy Rains to Burma |
| Description |
Unnamed tropical storm 02B came ashore along the northwest coast of Burma (Myanmar) on the 19th of May 2004 bringing with it strong winds and heavy rains. The system formed in the northern Bay of Bengal on May 17, and moved east as a strong tropical storm with maximum sustained winds estimated at 60 knots (69 mph) by the Joint Typhoon Warning Center as it crossed the coast of Burma. The system came ashore near the port city of Sittwe not far from the border with Bangladesh. The TRMM-based, near-real time Multi-satellite Precipitation Analysis (MPA) at the NASA Goddard Space Flight Center monitors rainfall over the global tropics. MPA rainfall totals for the region surrounding the northern Bay of Bengal are shown for the period 12-19 May 2004. Up to 20 inches of rain (darkest red areas) fell over the foothills and southern slopes of the Himalayan Mountains over northeastern Indian and Bhutan and along the north east coastline of the Bay of Bengal over far western Burma and southern Bangladesh. The heavy rain over western Burma and southern Bangladesh was a direct result of tropical storm 02B, while most of the heavy rain farther north along the slopes of the Himalayas was a result of low pressure centered over northern India and Nepal drawing moisture up from the Bay of Bengal earlier in the period. TRMM is a joint mission between NASA and the Japanese space agency JAXA. Image produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang (SSAI/NASA GSFC). |
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Typhoon Nida
| Title |
Typhoon Nida |
| Description |
The main islands of the Philippines have thus far been spared the brunt of Super Typhoon Nida (known as Dindo in the Philippines) though the eastern island of Catanduanes was not as fortunate. A tropical depression formed on the 13th of May 2004 about 500 km (300 miles) east of the southern Philippines island of Mindanao and initially moved west. By late the next day on the 14th, the system had already become a minimal typhoon (named Nida) with maximum sustained winds estimated at 65 knots (75 mph) by the Joint Typhoon Warning Center and was now moving almost due north. On the 15th, Nida continued to intensify reaching 90 knots (104 mph) and settled into a northwestly track. The next 24 hours saw Nida steadily intensify becoming a super typhoon with maximum sustained winds of 140 knots (161 mph) on the 16th as it came dangerously close to the central Philippines island of Samar. Samar avoided a direct hit, but Nida slammed into the island of Catanduanes the next day on the morning of the 17th where there were reports of deadly mudslides. As of the 17th Nida was located roughly 200 miles east of Luzon in the Philippine Sea and moving north northwest. On it's present course the eye is not expected to cross Luzon. The Tropical Rainfall Measuring Mission (TRMM) satellite captured a series of images showing the evolution of Nida. The first image was taken at 14:14 UTC on 13 May 2004. It shows the horizontal distribution of rain intensity. Rain rates in the center swath are from the TRMM Precipitation Radar (PR), while rain rates in the outer swath are from the TRMM Microwave Imager (TMI). The rain rates are overlaid on infrared (IR) data from the TRMM Visible Infrared Scanner (VIRS). At the time of the first image, Nida was still just a tropical storm. TRMM shows that the storm is still organizing with no evidence of an eye yet. Mainly moderate (green) to light (blue areas) rain rates are present near the center. The next image taken at 13:19 UTC on the 14th shows Nida becoming better organized. More banding is evident in the rain field (green arcs) though the eye is still poorly defined. The final image was taken at 12:09 UTC on May 17th after Nida had passed over Catanduanes. Thought the PR did not pass over the center, the TMI shows a nearly complete well-formed eye with embedded areas of intense rain (red areas). Having just passed over the island of Catanduanes, the center is likely showing the effects of being disrupted by the island's terrain. TRMM is a joint mission between NASA and the Japanese space agency JAXA. Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang (SSAI/NASA GSFC). |
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Typhoon Nida
| Title |
Typhoon Nida |
| Description |
The main islands of the Philippines have thus far been spared the brunt of Super Typhoon Nida (known as Dindo in the Philippines) though the eastern island of Catanduanes was not as fortunate. A tropical depression formed on the 13th of May 2004 about 500 km (300 miles) east of the southern Philippines island of Mindanao and initially moved west. By late the next day on the 14th, the system had already become a minimal typhoon (named Nida) with maximum sustained winds estimated at 65 knots (75 mph) by the Joint Typhoon Warning Center and was now moving almost due north. On the 15th, Nida continued to intensify reaching 90 knots (104 mph) and settled into a northwestly track. The next 24 hours saw Nida steadily intensify becoming a super typhoon with maximum sustained winds of 140 knots (161 mph) on the 16th as it came dangerously close to the central Philippines island of Samar. Samar avoided a direct hit, but Nida slammed into the island of Catanduanes the next day on the morning of the 17th where there were reports of deadly mudslides. As of the 17th Nida was located roughly 200 miles east of Luzon in the Philippine Sea and moving north northwest. On it's present course the eye is not expected to cross Luzon. The Tropical Rainfall Measuring Mission (TRMM) satellite captured a series of images showing the evolution of Nida. The first image was taken at 14:14 UTC on 13 May 2004. It shows the horizontal distribution of rain intensity. Rain rates in the center swath are from the TRMM Precipitation Radar (PR), while rain rates in the outer swath are from the TRMM Microwave Imager (TMI). The rain rates are overlaid on infrared (IR) data from the TRMM Visible Infrared Scanner (VIRS). At the time of the first image, Nida was still just a tropical storm. TRMM shows that the storm is still organizing with no evidence of an eye yet. Mainly moderate (green) to light (blue areas) rain rates are present near the center. The next image taken at 13:19 UTC on the 14th shows Nida becoming better organized. More banding is evident in the rain field (green arcs) though the eye is still poorly defined. The final image was taken at 12:09 UTC on May 17th after Nida had passed over Catanduanes. Thought the PR did not pass over the center, the TMI shows a nearly complete well-formed eye with embedded areas of intense rain (red areas). Having just passed over the island of Catanduanes, the center is likely showing the effects of being disrupted by the island's terrain. TRMM is a joint mission between NASA and the Japanese space agency JAXA. Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang (SSAI/NASA GSFC). |
|
Typhoon Nida
| Title |
Typhoon Nida |
| Description |
The main islands of the Philippines have thus far been spared the brunt of Super Typhoon Nida (known as Dindo in the Philippines) though the eastern island of Catanduanes was not as fortunate. A tropical depression formed on the 13th of May 2004 about 500 km (300 miles) east of the southern Philippines island of Mindanao and initially moved west. By late the next day on the 14th, the system had already become a minimal typhoon (named Nida) with maximum sustained winds estimated at 65 knots (75 mph) by the Joint Typhoon Warning Center and was now moving almost due north. On the 15th, Nida continued to intensify reaching 90 knots (104 mph) and settled into a northwestly track. The next 24 hours saw Nida steadily intensify becoming a super typhoon with maximum sustained winds of 140 knots (161 mph) on the 16th as it came dangerously close to the central Philippines island of Samar. Samar avoided a direct hit, but Nida slammed into the island of Catanduanes the next day on the morning of the 17th where there were reports of deadly mudslides. As of the 17th Nida was located roughly 200 miles east of Luzon in the Philippine Sea and moving north northwest. On it's present course the eye is not expected to cross Luzon. The Tropical Rainfall Measuring Mission (TRMM) satellite captured a series of images showing the evolution of Nida. The first image was taken at 14:14 UTC on 13 May 2004. It shows the horizontal distribution of rain intensity. Rain rates in the center swath are from the TRMM Precipitation Radar (PR), while rain rates in the outer swath are from the TRMM Microwave Imager (TMI). The rain rates are overlaid on infrared (IR) data from the TRMM Visible Infrared Scanner (VIRS). At the time of the first image, Nida was still just a tropical storm. TRMM shows that the storm is still organizing with no evidence of an eye yet. Mainly moderate (green) to light (blue areas) rain rates are present near the center. The next image taken at 13:19 UTC on the 14th shows Nida becoming better organized. More banding is evident in the rain field (green arcs) though the eye is still poorly defined. The final image was taken at 12:09 UTC on May 17th after Nida had passed over Catanduanes. Thought the PR did not pass over the center, the TMI shows a nearly complete well-formed eye with embedded areas of intense rain (red areas). Having just passed over the island of Catanduanes, the center is likely showing the effects of being disrupted by the island's terrain. TRMM is a joint mission between NASA and the Japanese space agency JAXA. Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang (SSAI/NASA GSFC). |
|
Typhoon Nida
| Title |
Typhoon Nida |
| Description |
The main islands of the Philippines have thus far been spared the brunt of Super Typhoon Nida (known as Dindo in the Philippines) though the eastern island of Catanduanes was not as fortunate. A tropical depression formed on the 13th of May 2004 about 500 km (300 miles) east of the southern Philippines island of Mindanao and initially moved west. By late the next day on the 14th, the system had already become a minimal typhoon (named Nida) with maximum sustained winds estimated at 65 knots (75 mph) by the Joint Typhoon Warning Center and was now moving almost due north. On the 15th, Nida continued to intensify reaching 90 knots (104 mph) and settled into a northwestly track. The next 24 hours saw Nida steadily intensify becoming a super typhoon with maximum sustained winds of 140 knots (161 mph) on the 16th as it came dangerously close to the central Philippines island of Samar. Samar avoided a direct hit, but Nida slammed into the island of Catanduanes the next day on the morning of the 17th where there were reports of deadly mudslides. As of the 17th Nida was located roughly 200 miles east of Luzon in the Philippine Sea and moving north northwest. On it's present course the eye is not expected to cross Luzon. The Tropical Rainfall Measuring Mission (TRMM) satellite captured a series of images showing the evolution of Nida. The first image was taken at 14:14 UTC on 13 May 2004. It shows the horizontal distribution of rain intensity. Rain rates in the center swath are from the TRMM Precipitation Radar (PR), while rain rates in the outer swath are from the TRMM Microwave Imager (TMI). The rain rates are overlaid on infrared (IR) data from the TRMM Visible Infrared Scanner (VIRS). At the time of the first image, Nida was still just a tropical storm. TRMM shows that the storm is still organizing with no evidence of an eye yet. Mainly moderate (green) to light (blue areas) rain rates are present near the center. The next image taken at 13:19 UTC on the 14th shows Nida becoming better organized. More banding is evident in the rain field (green arcs) though the eye is still poorly defined. The final image was taken at 12:09 UTC on May 17th after Nida had passed over Catanduanes. Thought the PR did not pass over the center, the TMI shows a nearly complete well-formed eye with embedded areas of intense rain (red areas). Having just passed over the island of Catanduanes, the center is likely showing the effects of being disrupted by the island's terrain. TRMM is a joint mission between NASA and the Japanese space agency JAXA. Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang (SSAI/NASA GSFC). |
|
Typhoon Nida
| Title |
Typhoon Nida |
| Description |
The main islands of the Philippines have thus far been spared the brunt of Super Typhoon Nida (known as Dindo in the Philippines) though the eastern island of Catanduanes was not as fortunate. A tropical depression formed on the 13th of May 2004 about 500 km (300 miles) east of the southern Philippines island of Mindanao and initially moved west. By late the next day on the 14th, the system had already become a minimal typhoon (named Nida) with maximum sustained winds estimated at 65 knots (75 mph) by the Joint Typhoon Warning Center and was now moving almost due north. On the 15th, Nida continued to intensify reaching 90 knots (104 mph) and settled into a northwestly track. The next 24 hours saw Nida steadily intensify becoming a super typhoon with maximum sustained winds of 140 knots (161 mph) on the 16th as it came dangerously close to the central Philippines island of Samar. Samar avoided a direct hit, but Nida slammed into the island of Catanduanes the next day on the morning of the 17th where there were reports of deadly mudslides. As of the 17th Nida was located roughly 200 miles east of Luzon in the Philippine Sea and moving north northwest. On it's present course the eye is not expected to cross Luzon. The Tropical Rainfall Measuring Mission (TRMM) satellite captured a series of images showing the evolution of Nida. The first image was taken at 14:14 UTC on 13 May 2004. It shows the horizontal distribution of rain intensity. Rain rates in the center swath are from the TRMM Precipitation Radar (PR), while rain rates in the outer swath are from the TRMM Microwave Imager (TMI). The rain rates are overlaid on infrared (IR) data from the TRMM Visible Infrared Scanner (VIRS). At the time of the first image, Nida was still just a tropical storm. TRMM shows that the storm is still organizing with no evidence of an eye yet. Mainly moderate (green) to light (blue areas) rain rates are present near the center. The next image taken at 13:19 UTC on the 14th shows Nida becoming better organized. More banding is evident in the rain field (green arcs) though the eye is still poorly defined. The final image was taken at 12:09 UTC on May 17th after Nida had passed over Catanduanes. Thought the PR did not pass over the center, the TMI shows a nearly complete well-formed eye with embedded areas of intense rain (red areas). Having just passed over the island of Catanduanes, the center is likely showing the effects of being disrupted by the island's terrain. TRMM is a joint mission between NASA and the Japanese space agency JAXA. Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang (SSAI/NASA GSFC). |
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Pollack Crater 'White Rock'
PIA05857
Sol (our sun)
Mars Orbiter Camera
| Title |
Pollack Crater 'White Rock' |
| Original Caption Released with Image |
2 May 2004 The "White Rock" of Pollack Crater is a feature that has been known since it was first observed by Mariner 9 in 1972. It is not actually white, but is much brighter than the fields of large, dark, windblown ripples that surround it. This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) picture provides the highest resolution view, ever, of a portion of the wind-eroded "White Rock" feature. The rock materials are believed to be the remains of sediment that once covered the floor of Pollack Crater. Wind has sculpted the light-toned material into ridges and troughs known as yardangs. This 1.5 meters per pixel (5 feet per pixel) image is located near 8.1°S, 335.2°W. It was acquired in late March 2004, is illuminated from the left/upper left, and covers an area about 3 km (1.9 mi) across. An earlier MOC view of "White Rock" can be seen in: "White Rock" of Pollack Crater, 4 December 2000. See PIA02848 [ http://photojournal.jpl.nasa.gov/catalog/PIA02848 ] and PIA02849 [ http://photojournal.jpl.nasa.gov/catalog/PIA02849 ]. |
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Clouds over Opportunity Site
PIA05865
Sol (our sun)
Mars Orbiter Camera
| Title |
Clouds over Opportunity Site |
| Original Caption Released with Image |
4 May 2004 In recent weeks, the Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) blue wide angle images have been showing clouds high in the atmosphere over the Mars Exploration Rover (MER-B), Opportunity, landing site in Meridiani Planum. This view of the sunward limb of Mars shows an example. It was acquired by the MOC blue camera late last week on 29 April 2004. The "x" shows the location of the rover site. The bright features in this image are water ice clouds. The dark portion of the image on the left is outer space. Clouds can also be seen in a zone approximately 20 to 40 kilometers (12-25 miles) above the martian limb. North is approximately up, east is toward the right, and sunlight illuminates the scene from the left (west). The image runs along the limb from about latitudes 4°S to about 2°N. |
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Alcoves in a Xanthe Crater
PIA05858
Sol (our sun)
Mars Orbiter Camera
| Title |
Alcoves in a Xanthe Crater |
| Original Caption Released with Image |
3 May 2004 Martian middle- and polar-latitude gullies are not the only places that 'alcoves' form by downslope erosion of debris. Even at equatorial latitudes, some craters exhibit these features. Alcoves at the heads of narrow, dry landslide scars are indicated in this Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image of a crater wall in Xanthe Terra. In both the middle/polar-latitude gully cases and in this example, alcoves form by undermining and collapse of material high on a relatively steep slope such as a crater wall. In this case, however, no fluid was involved, thus no gully or distinct apron formed. This crater wall is located near Shalbatana Vallis around 2.7°N, 43.1°W. The image is illuminated from the left, the 400 meter scale bar is about 437 yards long. For comparison, an example of martian gullies with alcoves, channels, and aprons can be seen in: Evidence for Recent Liquid Water on Mars: Basic Features of Martian Gullies, 22 June 2000, see PIA01031 [ http://photojournal.jpl.nasa.gov/catalog/PIA01031 ]. |
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Frosty Dune Field
PIA05856
Sol (our sun)
Mars Orbiter Camera
| Title |
Frosty Dune Field |
| Original Caption Released with Image |
1 May 2004 This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows frost-covered sand dunes in the early northern spring of 2004 in the north polar region. Sunlight illuminates the dunes from the bottom/lower left, but frost on slopes facing the lower right create the illusion of sunlight from that direction. This dune field, which would appear quite dark in summertime, is located near 80.3°N, 148.7°W. The picture covers an area about 3 km (1.9 mi) across. |
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Gullies and Dunes
PIA06292
Sol (our sun)
Mars Orbiter Camera
| Title |
Gullies and Dunes |
| Original Caption Released with Image |
2 June 2004 This 1.5 meters (5 ft.) per pixel Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image of gullies and dunes in a crater near Gorgonum Chaos was acquired in late May 2004. The gullies may have formed by a combination of processes. Many middle- and polar-latitude gullies such as these are thought to form both by mass movement of dry materials and action of liquid water. Some investigators suggest alternative fluids such as carbon dioxide. Still others make a case that no fluid was involved at all. Some gullies on Mars show clear association with subsurface layering and undermining of those layers, they also show banked channels, these kinds of observations are usually taken in support of the water hypothesis. The crater in which the landforms shown here occur is located at 37.5°S, 169.3°W. This image covers an area about 1.5 km (0.9 mi) across. The scene is illuminated by sunlight from the upper left. |
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Polar Color
PIA05864
Sol (our sun)
Thermal Emission Imaging Sys
…
| Title |
Polar Color |
| Original Caption Released with Image |
Released 3 May 2004 This nighttime visible color image was collected on January 1, 2003 during the Northern Summer season near the North Polar Troughs. This daytime visible color image was collected on September 4, 2002 during the Northern Spring season in Vastitas Borealis. The THEMIS VIS camera is capable of capturing color images of the martian surface using its five different color filters. In this mode of operation, the spatial resolution and coverage of the image must be reduced to accommodate the additional data volume produced from the use of multiple filters. To make a color image, three of the five filter images (each in grayscale) are selected. Each is contrast enhanced and then converted to a red, green, or blue intensity image. These three images are then combined to produce a full color, single image. Because the THEMIS color filters don't span the full range of colors seen by the human eye, a color THEMIS image does not represent true color. Also, because each single-filter image is contrast enhanced before inclusion in the three-color image, the apparent color variation of the scene is exaggerated. Nevertheless, the color variation that does appear is representative of some change in color, however subtle, in the actual scene. Note that the long edges of THEMIS color images typically contain color artifacts that do not represent surface variation. Image information: VIS instrument. Latitude 79, Longitude 346 East (14 West). 19 meter/pixel resolution. Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time. NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena. |
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Polar Color
PIA05864
Sol (our sun)
Thermal Emission Imaging Sys
…
| Title |
Polar Color |
| Original Caption Released with Image |
Released 3 May 2004 This nighttime visible color image was collected on January 1, 2003 during the Northern Summer season near the North Polar Troughs. This daytime visible color image was collected on September 4, 2002 during the Northern Spring season in Vastitas Borealis. The THEMIS VIS camera is capable of capturing color images of the martian surface using its five different color filters. In this mode of operation, the spatial resolution and coverage of the image must be reduced to accommodate the additional data volume produced from the use of multiple filters. To make a color image, three of the five filter images (each in grayscale) are selected. Each is contrast enhanced and then converted to a red, green, or blue intensity image. These three images are then combined to produce a full color, single image. Because the THEMIS color filters don't span the full range of colors seen by the human eye, a color THEMIS image does not represent true color. Also, because each single-filter image is contrast enhanced before inclusion in the three-color image, the apparent color variation of the scene is exaggerated. Nevertheless, the color variation that does appear is representative of some change in color, however subtle, in the actual scene. Note that the long edges of THEMIS color images typically contain color artifacts that do not represent surface variation. Image information: VIS instrument. Latitude 79, Longitude 346 East (14 West). 19 meter/pixel resolution. Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time. NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena. |
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Dune-filled Crater in Color
PIA05866
Sol (our sun)
Thermal Emission Imaging Sys
…
| Title |
Dune-filled Crater in Color |
| Original Caption Released with Image |
Released 4 May 2004 This daytime visible color image was collected on October 16, 2003 during the Southern Summer season of a crater within Molesworth Crater. This daytime visible color image was collected on September 4, 2002 during the Northern Spring season in Vastitas Borealis. The THEMIS VIS camera is capable of capturing color images of the martian surface using its five different color filters. In this mode of operation, the spatial resolution and coverage of the image must be reduced to accommodate the additional data volume produced from the use of multiple filters. To make a color image, three of the five filter images (each in grayscale) are selected. Each is contrast enhanced and then converted to a red, green, or blue intensity image. These three images are then combined to produce a full color, single image. Because the THEMIS color filters don't span the full range of colors seen by the human eye, a color THEMIS image does not represent true color. Also, because each single-filter image is contrast enhanced before inclusion in the three-color image, the apparent color variation of the scene is exaggerated. Nevertheless, the color variation that does appear is representative of some change in color, however subtle, in the actual scene. Note that the long edges of THEMIS color images typically contain color artifacts that do not represent surface variation. Image information: VIS instrument. Latitude -27.4, Longitude 149.6 East (210.4 West). 19 meter/pixel resolution. Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time. NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena. |
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Dune-filled Crater in Color
PIA05866
Sol (our sun)
Thermal Emission Imaging Sys
…
| Title |
Dune-filled Crater in Color |
| Original Caption Released with Image |
Released 4 May 2004 This daytime visible color image was collected on October 16, 2003 during the Southern Summer season of a crater within Molesworth Crater. This daytime visible color image was collected on September 4, 2002 during the Northern Spring season in Vastitas Borealis. The THEMIS VIS camera is capable of capturing color images of the martian surface using its five different color filters. In this mode of operation, the spatial resolution and coverage of the image must be reduced to accommodate the additional data volume produced from the use of multiple filters. To make a color image, three of the five filter images (each in grayscale) are selected. Each is contrast enhanced and then converted to a red, green, or blue intensity image. These three images are then combined to produce a full color, single image. Because the THEMIS color filters don't span the full range of colors seen by the human eye, a color THEMIS image does not represent true color. Also, because each single-filter image is contrast enhanced before inclusion in the three-color image, the apparent color variation of the scene is exaggerated. Nevertheless, the color variation that does appear is representative of some change in color, however subtle, in the actual scene. Note that the long edges of THEMIS color images typically contain color artifacts that do not represent surface variation. Image information: VIS instrument. Latitude -27.4, Longitude 149.6 East (210.4 West). 19 meter/pixel resolution. Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time. NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena. |
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Crater Floor in Color
PIA05880
Sol (our sun)
Thermal Emission Imaging Sys
…
| Title |
Crater Floor in Color |
| Original Caption Released with Image |
Released 5 May 2004This daytime visible color image was collected on November 18, 2003 during the Southern Summer season in Terra Cimmeria. This daytime visible color image was collected on September 4, 2002 during the Northern Spring season in Vastitas Borealis. The THEMIS VIS camera is capable of capturing color images of the martian surface using its five different color filters. In this mode of operation, the spatial resolution and coverage of the image must be reduced to accommodate the additional data volume produced from the use of multiple filters. To make a color image, three of the five filter images (each in grayscale) are selected. Each is contrast enhanced and then converted to a red, green, or blue intensity image. These three images are then combined to produce a full color, single image. Because the THEMIS color filters don't span the full range of colors seen by the human eye, a color THEMIS image does not represent true color. Also, because each single-filter image is contrast enhanced before inclusion in the three-color image, the apparent color variation of the scene is exaggerated. Nevertheless, the color variation that does appear is representative of some change in color, however subtle, in the actual scene. Note that the long edges of THEMIS color images typically contain color artifacts that do not represent surface variation. Image information: VIS instrument. Latitude -23.7, Longitude 135.6 East (224.4 West). 19 meter/pixel resolution. Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time. NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena. |
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Crater Floor in Color
PIA05880
Sol (our sun)
Thermal Emission Imaging Sys
…
| Title |
Crater Floor in Color |
| Original Caption Released with Image |
Released 5 May 2004This daytime visible color image was collected on November 18, 2003 during the Southern Summer season in Terra Cimmeria. This daytime visible color image was collected on September 4, 2002 during the Northern Spring season in Vastitas Borealis. The THEMIS VIS camera is capable of capturing color images of the martian surface using its five different color filters. In this mode of operation, the spatial resolution and coverage of the image must be reduced to accommodate the additional data volume produced from the use of multiple filters. To make a color image, three of the five filter images (each in grayscale) are selected. Each is contrast enhanced and then converted to a red, green, or blue intensity image. These three images are then combined to produce a full color, single image. Because the THEMIS color filters don't span the full range of colors seen by the human eye, a color THEMIS image does not represent true color. Also, because each single-filter image is contrast enhanced before inclusion in the three-color image, the apparent color variation of the scene is exaggerated. Nevertheless, the color variation that does appear is representative of some change in color, however subtle, in the actual scene. Note that the long edges of THEMIS color images typically contain color artifacts that do not represent surface variation. Image information: VIS instrument. Latitude -23.7, Longitude 135.6 East (224.4 West). 19 meter/pixel resolution. Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time. NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena. |
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Cut Crater in Reull Vallis
PIA05881
Sol (our sun)
Thermal Emission Imaging Sys
…
| Title |
Cut Crater in Reull Vallis |
| Original Caption Released with Image |
Released 6 May 2004This daytime visible color image was collected on May 24, 2002 during the Southern Fall season in Reull Vallis. This daytime visible color image was collected on September 4, 2002 during the Northern Spring season in Vastitas Borealis. The THEMIS VIS camera is capable of capturing color images of the martian surface using its five different color filters. In this mode of operation, the spatial resolution and coverage of the image must be reduced to accommodate the additional data volume produced from the use of multiple filters. To make a color image, three of the five filter images (each in grayscale) are selected. Each is contrast enhanced and then converted to a red, green, or blue intensity image. These three images are then combined to produce a full color, single image. Because the THEMIS color filters don't span the full range of colors seen by the human eye, a color THEMIS image does not represent true color. Also, because each single-filter image is contrast enhanced before inclusion in the three-color image, the apparent color variation of the scene is exaggerated. Nevertheless, the color variation that does appear is representative of some change in color, however subtle, in the actual scene. Note that the long edges of THEMIS color images typically contain color artifacts that do not represent surface variation. Image information: VIS instrument. Latitude -40.1, Longitude 99.1 East (260.9 West). 19 meter/pixel resolution. Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time. NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena. |
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Cut Crater in Reull Vallis
PIA05881
Sol (our sun)
Thermal Emission Imaging Sys
…
| Title |
Cut Crater in Reull Vallis |
| Original Caption Released with Image |
Released 6 May 2004This daytime visible color image was collected on May 24, 2002 during the Southern Fall season in Reull Vallis. This daytime visible color image was collected on September 4, 2002 during the Northern Spring season in Vastitas Borealis. The THEMIS VIS camera is capable of capturing color images of the martian surface using its five different color filters. In this mode of operation, the spatial resolution and coverage of the image must be reduced to accommodate the additional data volume produced from the use of multiple filters. To make a color image, three of the five filter images (each in grayscale) are selected. Each is contrast enhanced and then converted to a red, green, or blue intensity image. These three images are then combined to produce a full color, single image. Because the THEMIS color filters don't span the full range of colors seen by the human eye, a color THEMIS image does not represent true color. Also, because each single-filter image is contrast enhanced before inclusion in the three-color image, the apparent color variation of the scene is exaggerated. Nevertheless, the color variation that does appear is representative of some change in color, however subtle, in the actual scene. Note that the long edges of THEMIS color images typically contain color artifacts that do not represent surface variation. Image information: VIS instrument. Latitude -40.1, Longitude 99.1 East (260.9 West). 19 meter/pixel resolution. Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time. NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena. |
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Rock Slide in Ophir
PIA05914
Sol (our sun)
Mars Orbiter Camera
| Title |
Rock Slide in Ophir |
| Original Caption Released with Image |
7 May 2004 The dark streaks, just left of center, on the steep slope in this Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image were formed by a relatively recent rock slide. The streak closest to the center of the image resolves into a series of small depressions, indicating the path of a large, rolling boulder. The rock slide is inferred to have been recent (i.e., within the past several Mars years) because it is so much darker than its surroundings--there has not been sufficient time for the streak surfaces to become mantled by dust. The other talus accumulations on this slope are most likely lighter in tone because they are older and coated with dust. These features are located in Ophir Chasma, part of the Valles Marineris trough system, near 4.2°S, 74.0°W. The picture is illuminated by sunlight from the lower left and covers an area about 3 km (1.9 mi) across. |
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