|
|
Browse All
:
Terra of Goddard Space Flight Center (GSFC) and Florida from 2005
|
Printer Friendly |
National Map Showing Habitat
…
| Title |
National Map Showing Habitat Suitability for Tamarisk Invasion |
| Abstract |
The spread of invasive species is one of the most daunting environmental, economic, and human-health problems facing the United States and the World today. It is one of several grand challenge environmental problems being addressed by NASA's Science Mission Directorate through a national application partnership with the US Geological Survey. NASA and USGS are working together to develop a National Invasive Species Forecasting System (ISFS) for the management and control of invasive species on Department of Interior and adjacent lands. The system provides a framework for using USGS's early detection and monitoring protocols and predictive models to process MODIS, ETM+, ASTER and commercial remote sensing data, to create on-demand, regional-scale assessments of invasive species likely habitats. Recent work on the Invasive Species Forecasting System (ISFS) project has shown the importance of remotely-sensed time-series data in geostatistical models for mapping the distribution of Tamarisk and other invasive plant species. This video shows the habitat suitability for a Tamarisk invasion in the continental United States. Red indicates areas that are highly suitable and yellow indicates areas which are less suitable. Texas, New Mexico, and Nevada are the most highly suitable states. Utah and Arizona have the next greatest risk. California, Arizona, Montana, Colorado, Oregon, Ohio, Wyoming, and Florida also have a significant risk. |
| Completed |
2005-10-18 |
|
National Map Showing Habitat
…
| Title |
National Map Showing Habitat Suitability for Tamarisk Invasion |
| Abstract |
The spread of invasive species is one of the most daunting environmental, economic, and human-health problems facing the United States and the World today. It is one of several grand challenge environmental problems being addressed by NASA's Science Mission Directorate through a national application partnership with the US Geological Survey. NASA and USGS are working together to develop a National Invasive Species Forecasting System (ISFS) for the management and control of invasive species on Department of Interior and adjacent lands. The system provides a framework for using USGS's early detection and monitoring protocols and predictive models to process MODIS, ETM+, ASTER and commercial remote sensing data, to create on-demand, regional-scale assessments of invasive species likely habitats. Recent work on the Invasive Species Forecasting System (ISFS) project has shown the importance of remotely-sensed time-series data in geostatistical models for mapping the distribution of Tamarisk and other invasive plant species. This video shows the habitat suitability for a Tamarisk invasion in the continental United States. Red indicates areas that are highly suitable and yellow indicates areas which are less suitable. Texas, New Mexico, and Nevada are the most highly suitable states. Utah and Arizona have the next greatest risk. California, Arizona, Montana, Colorado, Oregon, Ohio, Wyoming, and Florida also have a significant risk. |
| Completed |
2005-10-18 |
|
Hurricane Dennis
| Title |
Hurricane Dennis |
| Abstract |
The formation of Hurricane Dennis on July 5 made that the earliest date on record that four named storms formed in the Atlantic basin. Dennis proved to be a powerful and destructive storm in the Caribbean Sea and the Gulf of Mexico. It crossed over Cuba on July 8 and 9, leaving at least 10 dead, and caused additional deaths in Haiti. After re-emerging over open water, Dennis re-strengthened into a dangerous Category 4 hurricane with top wind speeds of 233 kilometers per hour (145 mph). The storm passed within 90 kilometers (55 miles) of Pensacola, Florida, and hit land about 80 kilometers (50 miles) east of where Hurricane Ivan struck in September, 2004. A large storm surge of more than 10 feet was created in certain areas, and many homes and businesses in low-lying areas were flooded. |
| Completed |
2005-07-11 |
|
Hurricane Dennis
| Title |
Hurricane Dennis |
| Abstract |
The formation of Hurricane Dennis on July 5 made that the earliest date on record that four named storms formed in the Atlantic basin. Dennis proved to be a powerful and destructive storm in the Caribbean Sea and the Gulf of Mexico. It crossed over Cuba on July 8 and 9, leaving at least 10 dead, and caused additional deaths in Haiti. After re-emerging over open water, Dennis re-strengthened into a dangerous Category 4 hurricane with top wind speeds of 233 kilometers per hour (145 mph). The storm passed within 90 kilometers (55 miles) of Pensacola, Florida, and hit land about 80 kilometers (50 miles) east of where Hurricane Ivan struck in September, 2004. A large storm surge of more than 10 feet was created in certain areas, and many homes and businesses in low-lying areas were flooded. |
| Completed |
2005-07-11 |
|
Hurricane Dennis
| Title |
Hurricane Dennis |
| Abstract |
The formation of Hurricane Dennis on July 5 made that the earliest date on record that four named storms formed in the Atlantic basin. Dennis proved to be a powerful and destructive storm in the Caribbean Sea and the Gulf of Mexico. It crossed over Cuba on July 8 and 9, leaving at least 10 dead, and caused additional deaths in Haiti. After re-emerging over open water, Dennis re-strengthened into a dangerous Category 4 hurricane with top wind speeds of 233 kilometers per hour (145 mph). The storm passed within 90 kilometers (55 miles) of Pensacola, Florida, and hit land about 80 kilometers (50 miles) east of where Hurricane Ivan struck in September, 2004. A large storm surge of more than 10 feet was created in certain areas, and many homes and businesses in low-lying areas were flooded. |
| Completed |
2005-07-11 |
|
Hurricane Dennis
| Title |
Hurricane Dennis |
| Abstract |
The formation of Hurricane Dennis on July 5 made that the earliest date on record that four named storms formed in the Atlantic basin. Dennis proved to be a powerful and destructive storm in the Caribbean Sea and the Gulf of Mexico. It crossed over Cuba on July 8 and 9, leaving at least 10 dead, and caused additional deaths in Haiti. After re-emerging over open water, Dennis re-strengthened into a dangerous Category 4 hurricane with top wind speeds of 233 kilometers per hour (145 mph). The storm passed within 90 kilometers (55 miles) of Pensacola, Florida, and hit land about 80 kilometers (50 miles) east of where Hurricane Ivan struck in September, 2004. A large storm surge of more than 10 feet was created in certain areas, and many homes and businesses in low-lying areas were flooded. |
| Completed |
2005-07-11 |
|
Progression of Hurricane Den
…
| Title |
Progression of Hurricane Dennis, 2005 (WMS) |
| Abstract |
The formation of Hurricane Dennis on July 5 made that the earliest date on record that four named storms formed in the Atlantic basin. Dennis proved to be a powerful and destructive storm in the Caribbean Sea and the Gulf of Mexico. It crossed over Cuba on July 8 and 9, leaving at least 10 dead, and caused additional deaths in Haiti. After re-emerging over open water, Dennis re-strengthened into a dangerous Category 4 hurricane with top wind speeds of 233 kilometers per hour (145 mph). The storm passed within 90 kilometers (55 miles) of Pensacola, Florida, and hit land about 80 kilometers (50 miles) east of where Hurricane Ivan struck in September, 2004. A large storm surge of more than 10 feet was created in certain areas, and many homes and businesses in low-lying areas were flooded. |
| Completed |
2005-07-18 |
|
Progression of Hurricane Den
…
| Title |
Progression of Hurricane Dennis, 2005 (WMS) |
| Abstract |
The formation of Hurricane Dennis on July 5 made that the earliest date on record that four named storms formed in the Atlantic basin. Dennis proved to be a powerful and destructive storm in the Caribbean Sea and the Gulf of Mexico. It crossed over Cuba on July 8 and 9, leaving at least 10 dead, and caused additional deaths in Haiti. After re-emerging over open water, Dennis re-strengthened into a dangerous Category 4 hurricane with top wind speeds of 233 kilometers per hour (145 mph). The storm passed within 90 kilometers (55 miles) of Pensacola, Florida, and hit land about 80 kilometers (50 miles) east of where Hurricane Ivan struck in September, 2004. A large storm surge of more than 10 feet was created in certain areas, and many homes and businesses in low-lying areas were flooded. |
| Completed |
2005-07-18 |
|
Progression of Hurricane Den
…
| Title |
Progression of Hurricane Dennis, 2005 (WMS) |
| Abstract |
The formation of Hurricane Dennis on July 5 made that the earliest date on record that four named storms formed in the Atlantic basin. Dennis proved to be a powerful and destructive storm in the Caribbean Sea and the Gulf of Mexico. It crossed over Cuba on July 8 and 9, leaving at least 10 dead, and caused additional deaths in Haiti. After re-emerging over open water, Dennis re-strengthened into a dangerous Category 4 hurricane with top wind speeds of 233 kilometers per hour (145 mph). The storm passed within 90 kilometers (55 miles) of Pensacola, Florida, and hit land about 80 kilometers (50 miles) east of where Hurricane Ivan struck in September, 2004. A large storm surge of more than 10 feet was created in certain areas, and many homes and businesses in low-lying areas were flooded. |
| Completed |
2005-07-18 |
|
Progression of Hurricane Den
…
| Title |
Progression of Hurricane Dennis, 2005 (WMS) |
| Abstract |
The formation of Hurricane Dennis on July 5 made that the earliest date on record that four named storms formed in the Atlantic basin. Dennis proved to be a powerful and destructive storm in the Caribbean Sea and the Gulf of Mexico. It crossed over Cuba on July 8 and 9, leaving at least 10 dead, and caused additional deaths in Haiti. After re-emerging over open water, Dennis re-strengthened into a dangerous Category 4 hurricane with top wind speeds of 233 kilometers per hour (145 mph). The storm passed within 90 kilometers (55 miles) of Pensacola, Florida, and hit land about 80 kilometers (50 miles) east of where Hurricane Ivan struck in September, 2004. A large storm surge of more than 10 feet was created in certain areas, and many homes and businesses in low-lying areas were flooded. |
| Completed |
2005-07-18 |
|
Hurricane Dennis
| Title |
Hurricane Dennis |
| Description |
Hurricane Dennis was bearing down on the Gulf Coast of the United States on July 10, 2005, at 12:15 p.m. (16:15 UTC) when the Moderate Resolution Imaging Spectroradiometer [ http://modis.gsfc.nasa.gov/ ] on NASA?s Terra [ http://terra.nasa.gov/ ] satellite captured this image. With winds of 135 miles per hour (217 kph), Dennis was a powerful Category 4 storm just hours away from making landfall. At the time this image was taken, the eye of the storm was about 55 miles (90 kilometers) south, southeast of Pensacola, Florida, and the storm was moving northwest at about 18 miles per hour (29 kph). The size of the storm put clouds of rain over most of the southeastern United States well before the storm came ashore. In this image, Dennis covers all of Florida, Alabama, Mississippi, and stretches over parts of Louisiana. The northern fringes of the storm appear to be over Tennessee and North Carolina. For additional information and warnings about this storm, please visit the National Hurricane Center. This image is available in additional resolutions from the MODIS Rapid Response Team. NASA image courtesy Jacques Descloitres, MODIS Rapid Response Team, NASA GSFC |
|
Hurricane Katrina
| Title |
Hurricane Katrina |
| Description |
Hurricane Katrina had just become a category 1 hurricane when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured this image on August 25, 2005, at 12:30 p.m., Eastern Daylight Savings Time. The hurricane formed as a tropical depression late on August 23 and developed quickly into a tropical storm by 11 a.m. the next morning. By the time MODIS acquired this image, the storm had developed into a category 1 hurricane, the lowest category in the hurricane-strength scale. Katrina had winds of 120 kilometers per hour (75 miles per hour). A more serious danger is Katrina's rains. The storm was moving quite slowly as of August 26, just 10 km/hr (6 mph). This means that Katrina's heavy rains will linger longer over one area, dumping 15-25 centimeters (6-10 inches) of rain over Florida and the Bahamas and possibly up to 38 cm (15 inches) in some regions, the National Hurricane Center warns. For more information about the storm, please visit the National Hurricane Center [ http://www.nhc.noaa.gov/ ]. This image is available in multiple resolutions [ http://rapidfire.sci.gsfc.nasa.gov/gallery/?2005237-0825/Katrina.A2005237.1630 ] from the MODIS Rapid Response Team. NASA image courtesy Jeff Schmaltz, MODIS Land Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC |
|
Hurricane Katrina
| Title |
Hurricane Katrina |
| Description |
Hurricane Katrina was sprawled across all or part of 16 states at 2:15 p.m. CDT on August 29, 2005, when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Aqua [ http://aqua.nasa.gov/ ] satellite captured this image. After nearly eight hours over land, Katrina was still a Category 1 storm, with winds of 150 kilometers per hour (95 miles per hour) and stronger gusts. In this image, Katrina measures about 1,260 kilometers (780 miles) from east to west and about the same distance from north to south across its center. While most states under its clouds have only experienced rain so far, Louisiana, Mississippi, Alabama, and Florida have all been pummeled by furious winds, heavy rain, and a powerful storm surge. Katrina was a strong Category 3 storm when its eye moved ashore earlier in the day. The large image provided above has a resolution of 500 meters per pixel. The MODIS Rapid Response Team provides the image in additional resolutions, including MODIS' maximum resolution of 250 meters per pixel. NASA image courtesy Jeff Schmaltz, MODIS Land Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC |
|
Hurricane Katrina
| Title |
Hurricane Katrina |
| Description |
Tropical Storm Katrina had just become the eleventh named storm of the 2005 Atlantic Hurricane season when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured this image on August 24, 2005, at 11:50 a.m., Eastern Daylight Savings Time. The storm formed late on August 23 and developed quickly into a tropical storm by 11 a.m. the next morning. By the time MODIS acquired this image, the storm was just starting to take the recognizable swirling shape of a hurricane. Katrina had winds of 64 kilometers per hour (40 miles per hour) and was expected to get stronger as it approached the south Florida coast, possibly becoming a Category 1 hurricane before coming ashore. A more serious danger is Katrina's rains. The storm is moving slowly, just 13 km/hr (8 mph), and it is expected to slow as it moves over land. This means that Katrina's heavy rains will linger longer over one area, dumping 15-25 centimeters (6-10 inches) of rain over Florida and the Bahamas and possibly up to 38 cm (15 inches) in some regions, the National Hurricane Center warns. For more information about the storm, please visit the National Hurricane Center [ http://www.nhc.noaa.gov/ ]. This image is available in multiple resolutions [ http://rapidfire.sci.gsfc.nasa.gov/gallery/?2005236-0824/Katrina.A2005236.1550 ] from the MODIS Rapid Response Team. NASA image courtesy Jeff Schmaltz, MODIS Land Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC |
|
Hurricane Katrina Erodes the
…
| Title |
Hurricane Katrina Erodes the U.S. Gulf Coast |
| Description |
Gulf Coast cities weren't the only land surfaces to take a beating from Hurricane Katrina in August 2005. Barrier islands stretching from Texas to Florida were also scoured by the wind and waves of the powerful storm. Permanent changes to the shape and elevation of Timbalier Island and its northeastern companions are visible in this pair of infrared-enhanced images from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) [ http://asterweb.jpl.nasa.gov ] on NASA's Terra [ http://terra.nasa.gov ] satellite. Timbalier Island, the largest island pictured here, sits at the interface between the Gulf of Mexico (south) and Terrebonne Bay (north) along the Louisiana coast southwest of New Orleans. Compared to the image from 2000 (bottom), a large swath of bright sand dominates the eastern side of Timbalier Island in the September 13 image, having either been piled there or exposed by waves and storm surge. To the east-northeast, two small, curving islands have disappeared completely, while farther north, the fierce seas turned two small slots in a barrier island into a single large gap. NASA images courtesy Jesse Allen, Earth Observatory, using data obtained courtesy of the NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team [ http://asterweb.jpl.nasa.gov/ ] |
|
Hurricane Katrina Erodes the
…
| Title |
Hurricane Katrina Erodes the U.S. Gulf Coast |
| Description |
Gulf Coast cities weren't the only land surfaces to take a beating from Hurricane Katrina in August 2005. Barrier islands stretching from Texas to Florida were also scoured by the wind and waves of the powerful storm. Permanent changes to the shape and elevation of Timbalier Island and its northeastern companions are visible in this pair of infrared-enhanced images from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) [ http://asterweb.jpl.nasa.gov ] on NASA's Terra [ http://terra.nasa.gov ] satellite. Timbalier Island, the largest island pictured here, sits at the interface between the Gulf of Mexico (south) and Terrebonne Bay (north) along the Louisiana coast southwest of New Orleans. Compared to the image from 2000 (bottom), a large swath of bright sand dominates the eastern side of Timbalier Island in the September 13 image, having either been piled there or exposed by waves and storm surge. To the east-northeast, two small, curving islands have disappeared completely, while farther north, the fierce seas turned two small slots in a barrier island into a single large gap. NASA images courtesy Jesse Allen, Earth Observatory, using data obtained courtesy of the NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team [ http://asterweb.jpl.nasa.gov/ ] |
|
Hurricane Katrina Erodes the
…
| Title |
Hurricane Katrina Erodes the U.S. Gulf Coast |
| Description |
Gulf Coast cities weren't the only land surfaces to take a beating from Hurricane Katrina in August 2005. Barrier islands stretching from Texas to Florida were also scoured by the wind and waves of the powerful storm. Permanent changes to the shape and elevation of Horn and Petit Bois Islands south of Pascagoula, Mississippi, are visible in these infrared-enhanced images captured by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) [ http://asterweb.jpl.nasa.gov ] on NASA's Terra [ http://terra.nasa.gov ] satellite. The eastern and western tips of Horn island have been eroded so greatly that they are now below sea level, their white sandy beaches (August 7 image) now covered by blue water (September 17 image). The sound (northern) side of the island is layered with sand, which stands out in grayish-white against the red of vegetation. On Petit Bois Island, the changes appear more subtle, but there, too, the red of the island's vegetation appears softened by bright sand. NASA images courtesy Jesse Allen, Earth Observatory, using data obtained courtesy of the NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team [ http://asterweb.jpl.nasa.gov/ ] |
|
Hurricane Katrina Erodes the
…
| Title |
Hurricane Katrina Erodes the U.S. Gulf Coast |
| Description |
Gulf Coast cities weren't the only land surfaces to take a beating from Hurricane Katrina in August 2005. Barrier islands stretching from Texas to Florida were also scoured by the wind and waves of the powerful storm. Permanent changes to the shape and elevation of Horn and Petit Bois Islands south of Pascagoula, Mississippi, are visible in these infrared-enhanced images captured by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) [ http://asterweb.jpl.nasa.gov ] on NASA's Terra [ http://terra.nasa.gov ] satellite. The eastern and western tips of Horn island have been eroded so greatly that they are now below sea level, their white sandy beaches (August 7 image) now covered by blue water (September 17 image). The sound (northern) side of the island is layered with sand, which stands out in grayish-white against the red of vegetation. On Petit Bois Island, the changes appear more subtle, but there, too, the red of the island's vegetation appears softened by bright sand. NASA images courtesy Jesse Allen, Earth Observatory, using data obtained courtesy of the NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team [ http://asterweb.jpl.nasa.gov/ ] |
|
Hurricane Katrina Erodes the
…
| Title |
Hurricane Katrina Erodes the U.S. Gulf Coast |
| Description |
A fringe of barrier islands line the coast of Mississippi, protecting the mainland from the pounding waves of most ocean storms, but the islands could not shelter the mainland from Hurricane Katrina's exceptionally powerful storm surge. The battering waves ate away at the islands, permanently altering their shape. The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER [ http://asterweb.jpl.nasa.gov/ ]) captured the top image of East and West Ship Islands and Cat Island on September 8, 2005. The lower image is made up of two difference ASTER scenes. The scene on the left was acquired on June 4, 2005, while the scene on the right was taken on April 22, 2001. A diagonal line where the ocean changes color indicates the division between the two images. The most dramatic change can be seen in East Ship Island. Compared to April 2001, most of East Ship Island has disappeared beneath the ocean by September 8, 2005. Some of the erosion may have occurred in other storms between 2001 and 2005, but Katrina is probably responsible for much of the damage. The ghost shores of the island are faintly visible under the water as a lighter shade of blue. West Ship Island, which hosts a civil war fort and a historic lighthouse, and Cat Island have also shrunk slightly. The southern tip of Cat Island is missing and the pointed tips of Ship Island have been rounded out. The section of the northwestern shore that holds the lighthouse and fort seems to be unchanged. East and West Ship Islands are no strangers to the type of erosion Katrina inflicted on them. The islands had been a single island until Hurricane Camille cleft it in two in 1969. In general, barrier islands are constantly changing, their shorelines building and eroding at remarkable speed, with dramatic change occurring routinely when powerful storms strike. In competition with nature, humans also have a large impact on barrier islands. Such islands are popular vacation spots. Construction can interfere with beach building and can degrade the vegetation that anchors dunes on the islands. Of the barrier islands along the U.S. coast, East Ship Island is one of the few that remains in its natural state, unchanged by population. To preserve the islands, Congress added them to Gulf Islands National Seashore [ http://www.nps.gov/guis/extended/MIS/MNature/Islands.htm ], the United States' largest national seashore, under the National Park Service. Cat Island forms the western boundary of the park, which consists of a string of islands along the Mississippi and Florida coasts, including East and West Ship Island. NASA images courtesy Jesse Allen, Earth Observatory, using data obtained courtesy of the NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team [ http://asterweb.jpl.nasa.gov/ ] |
|
Hurricane Katrina Erodes the
…
| Title |
Hurricane Katrina Erodes the U.S. Gulf Coast |
| Description |
A fringe of barrier islands line the coast of Mississippi, protecting the mainland from the pounding waves of most ocean storms, but the islands could not shelter the mainland from Hurricane Katrina's exceptionally powerful storm surge. The battering waves ate away at the islands, permanently altering their shape. The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER [ http://asterweb.jpl.nasa.gov/ ]) captured the top image of East and West Ship Islands and Cat Island on September 8, 2005. The lower image is made up of two difference ASTER scenes. The scene on the left was acquired on June 4, 2005, while the scene on the right was taken on April 22, 2001. A diagonal line where the ocean changes color indicates the division between the two images. The most dramatic change can be seen in East Ship Island. Compared to April 2001, most of East Ship Island has disappeared beneath the ocean by September 8, 2005. Some of the erosion may have occurred in other storms between 2001 and 2005, but Katrina is probably responsible for much of the damage. The ghost shores of the island are faintly visible under the water as a lighter shade of blue. West Ship Island, which hosts a civil war fort and a historic lighthouse, and Cat Island have also shrunk slightly. The southern tip of Cat Island is missing and the pointed tips of Ship Island have been rounded out. The section of the northwestern shore that holds the lighthouse and fort seems to be unchanged. East and West Ship Islands are no strangers to the type of erosion Katrina inflicted on them. The islands had been a single island until Hurricane Camille cleft it in two in 1969. In general, barrier islands are constantly changing, their shorelines building and eroding at remarkable speed, with dramatic change occurring routinely when powerful storms strike. In competition with nature, humans also have a large impact on barrier islands. Such islands are popular vacation spots. Construction can interfere with beach building and can degrade the vegetation that anchors dunes on the islands. Of the barrier islands along the U.S. coast, East Ship Island is one of the few that remains in its natural state, unchanged by population. To preserve the islands, Congress added them to Gulf Islands National Seashore [ http://www.nps.gov/guis/extended/MIS/MNature/Islands.htm ], the United States' largest national seashore, under the National Park Service. Cat Island forms the western boundary of the park, which consists of a string of islands along the Mississippi and Florida coasts, including East and West Ship Island. NASA images courtesy Jesse Allen, Earth Observatory, using data obtained courtesy of the NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team [ http://asterweb.jpl.nasa.gov/ ] |
|
Hurricane Katrina Erodes the
…
| Title |
Hurricane Katrina Erodes the U.S. Gulf Coast |
| Description |
A fringe of barrier islands line the coast of Mississippi, protecting the mainland from the pounding waves of most ocean storms, but the islands could not shelter the mainland from Hurricane Katrina's exceptionally powerful storm surge. The battering waves ate away at the islands, permanently altering their shape. The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER [ http://asterweb.jpl.nasa.gov/ ]) captured the top image of East and West Ship Islands and Cat Island on September 8, 2005. The lower image is made up of two difference ASTER scenes. The scene on the left was acquired on June 4, 2005, while the scene on the right was taken on April 22, 2001. A diagonal line where the ocean changes color indicates the division between the two images. The most dramatic change can be seen in East Ship Island. Compared to April 2001, most of East Ship Island has disappeared beneath the ocean by September 8, 2005. Some of the erosion may have occurred in other storms between 2001 and 2005, but Katrina is probably responsible for much of the damage. The ghost shores of the island are faintly visible under the water as a lighter shade of blue. West Ship Island, which hosts a civil war fort and a historic lighthouse, and Cat Island have also shrunk slightly. The southern tip of Cat Island is missing and the pointed tips of Ship Island have been rounded out. The section of the northwestern shore that holds the lighthouse and fort seems to be unchanged. East and West Ship Islands are no strangers to the type of erosion Katrina inflicted on them. The islands had been a single island until Hurricane Camille cleft it in two in 1969. In general, barrier islands are constantly changing, their shorelines building and eroding at remarkable speed, with dramatic change occurring routinely when powerful storms strike. In competition with nature, humans also have a large impact on barrier islands. Such islands are popular vacation spots. Construction can interfere with beach building and can degrade the vegetation that anchors dunes on the islands. Of the barrier islands along the U.S. coast, East Ship Island is one of the few that remains in its natural state, unchanged by population. To preserve the islands, Congress added them to Gulf Islands National Seashore [ http://www.nps.gov/guis/extended/MIS/MNature/Islands.htm ], the United States' largest national seashore, under the National Park Service. Cat Island forms the western boundary of the park, which consists of a string of islands along the Mississippi and Florida coasts, including East and West Ship Island. NASA images courtesy Jesse Allen, Earth Observatory, using data obtained courtesy of the NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team [ http://asterweb.jpl.nasa.gov/ ] |
|
Hurricane Katrina Floods the
…
| Title |
Hurricane Katrina Floods the Southeastern United States |
| Description |
Though still a weak hurricane at the time, Hurricane Katrina dumped heavy rain on the southern tip of Florida on August 25 and August 26, 2005. On August 28, a few clouds lingered over Florida, but the storm had moved away to reveal extensive flooding. These false-color images were taken by the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Aqua [ http://aqua.nasa.gov/ ] and Terra [ http://terra.nasa.gov/ ] satellites. In this color combination, water appears black, vegetation appears bright green, and clouds are pale blue and white. The most visible flooding is in Everglades National Park. The park's boundaries are clearly visible in the lower image, taken on August 8, 2005. The northeastern boundary of the park is defined by a bright green line formed by the Highway 41 corridor. On the east side of the peninsula, the land is a lighter green where the water has been drained away and the land cultivated. Numerous cities, including Miami, dot the landscape with patches of cement-colored gray. Everglades National Park surrounds the developed land to the south and west and is defined by the deeper green of native vegetation and swampland. On August 28, top, water filled much of the park, but there is little sign of flooding to the east. Extensive flooding was reported in southeastern Florida, but it is not visible in this image. The effects of Hurricane Katrina on the ocean are clear. As the storm passed, its rains and wind churned the ocean, bringing clouds of sediment to the surface. This sludge from the ocean floor colors the water an electric blue in the top image. The large images provided above are at MODIS' maximum resolution of 250 meters per pixel. The MODIS Rapid Response Team provides daily images in additional resolutions [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?USA8 ]. NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC. |
|
Hurricane Katrina Floods the
…
| Title |
Hurricane Katrina Floods the Southeastern United States |
| Description |
Though still a weak hurricane at the time, Hurricane Katrina dumped heavy rain on the southern tip of Florida on August 25 and August 26, 2005. On August 28, a few clouds lingered over Florida, but the storm had moved away to reveal extensive flooding. These false-color images were taken by the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Aqua [ http://aqua.nasa.gov/ ] and Terra [ http://terra.nasa.gov/ ] satellites. In this color combination, water appears black, vegetation appears bright green, and clouds are pale blue and white. The most visible flooding is in Everglades National Park. The park's boundaries are clearly visible in the lower image, taken on August 8, 2005. The northeastern boundary of the park is defined by a bright green line formed by the Highway 41 corridor. On the east side of the peninsula, the land is a lighter green where the water has been drained away and the land cultivated. Numerous cities, including Miami, dot the landscape with patches of cement-colored gray. Everglades National Park surrounds the developed land to the south and west and is defined by the deeper green of native vegetation and swampland. On August 28, top, water filled much of the park, but there is little sign of flooding to the east. Extensive flooding was reported in southeastern Florida, but it is not visible in this image. The effects of Hurricane Katrina on the ocean are clear. As the storm passed, its rains and wind churned the ocean, bringing clouds of sediment to the surface. This sludge from the ocean floor colors the water an electric blue in the top image. The large images provided above are at MODIS' maximum resolution of 250 meters per pixel. The MODIS Rapid Response Team provides daily images in additional resolutions [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?USA8 ]. NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC. |
|
Hurricane Katrina Floods the
…
| Title |
Hurricane Katrina Floods the Southeastern United States |
| Description |
Though still a weak hurricane at the time, Hurricane Katrina dumped heavy rain on the southern tip of Florida on August 25 and August 26, 2005. On August 28, a few clouds lingered over Florida, but the storm had moved away to reveal extensive flooding. These false-color images were taken by the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Aqua [ http://aqua.nasa.gov/ ] and Terra [ http://terra.nasa.gov/ ] satellites. In this color combination, water appears black, vegetation appears bright green, and clouds are pale blue and white. The most visible flooding is in Everglades National Park. The park's boundaries are clearly visible in the lower image, taken on August 8, 2005. The northeastern boundary of the park is defined by a bright green line formed by the Highway 41 corridor. On the east side of the peninsula, the land is a lighter green where the water has been drained away and the land cultivated. Numerous cities, including Miami, dot the landscape with patches of cement-colored gray. Everglades National Park surrounds the developed land to the south and west and is defined by the deeper green of native vegetation and swampland. On August 28, top, water filled much of the park, but there is little sign of flooding to the east. Extensive flooding was reported in southeastern Florida, but it is not visible in this image. The effects of Hurricane Katrina on the ocean are clear. As the storm passed, its rains and wind churned the ocean, bringing clouds of sediment to the surface. This sludge from the ocean floor colors the water an electric blue in the top image. The large images provided above are at MODIS' maximum resolution of 250 meters per pixel. The MODIS Rapid Response Team provides daily images in additional resolutions [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?USA8 ]. NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC. |
|
Hurricane Ophelia
| Title |
Hurricane Ophelia |
| Description |
Ophelia was once again a hurricane when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured this image at 11:35 a.m. local time, on September 11, 2005. A Category 1 hurricane, Ophelia had sustained winds of 110 kilometers per hour (70 miles per hour). Tropical Storm Ophelia formed off the Atlantic Coast of Florida. As it gathered strength and size, it brought winds and rain to parts of the Florida coast, though the storm's center remained offshore. By September 8, Ophelia briefly reached hurricane strength, but it soon weakened again. Over the following two days, the center of the storm system moved eastwards off the Florida coast and began a gradual track north and east, paralleling the U.S. coastline. As Ophelia moved, the storm again rebuilt into a Category 1 hurricane. It is unusual for a storm system to build just offshore in this fashion, especially as having rain bands over land tends to break up the storm formation. It is also unusual to have so many storms in such a short time: the 2005 Atlantic hurricane season looks likely to go into the record books as the most active season on record yet. Ophelia is the earliest "O" named storm in a season since the storm naming system was devised. The large image provided above has a spatial resolution of 250 meters per pixel. It is available in additional resolutions [ http://rapidfire.sci.gsfc.nasa.gov/gallery/?2005254-0911/Ophelia.A2005254.1535 ] from the MODIS Rapid Response Team. NASA image courtesy Jeff Schmaltz, MODIS Land Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC |
|
Hurricane Rita
| Title |
Hurricane Rita |
| Description |
A tropical depression formed in the Bahamas on September 17, 2005. Once it was organized enough to have winds of over 62 kilometers per hour (39 miles per hour), it was classified as a tropical storm and given the name Rita, becoming the 17th named storm system of the 2005 hurricane season. With the season not yet over, 2005 is already the 5th most active storm season since naming records were started in 1851. According to the National Hurricane Center, 21 tropical storms formed in 1933, 19 developed in 1995 and 1887, and 18 formed in 1969. Rita is also the earliest "R" named storm in a season. Rita crossed the threshold to tropical storm status around 5:00 p.m. (local time) on September 18, 2005. The Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured this image of Rita roughly fives hours earlier at 11:40 a.m. while the storm was still an organizing tropical depression. The classical spiral structure of a hurricane is not yet fully formed, nor is there a well-organized eye of the storm, but these nascent features of the developing system are apparent already. Forecasters are particularly concerned about Rita as it is projected to pass through the Florida Key Islands as it reaches hurricane strength. The storm track projections as of September 19 have it crossing the Gulf of Mexico to make landfall in the general vicinity of southern Texas, but forecasting hurricanes several days in advance is still an uncertain science and there are fears that Rita could turn in the Gulf and head into areas recently battered by Katrina. NASA image created by Jesse Allen, Earth Observatory, using data obtained courtesy of the MODIS Rapid Response team. |
|
Hurricane Wilma
| Title |
Hurricane Wilma |
| Description |
Hurricane Wilma was still gathering strength when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite took this image at 11:55 a.m. Eastern Daylight Time, on October 18, 2005. At that time, Wilma was rapidly building in power and size. While lacking the classic, tightly wound spiral of a well-developed hurricane, Wilma was becoming a force to be reckoned with. Less than 24 hours later, Hurricane Wilma exploded in strength to the very top of the wind strength scale as a Category 5 hurricane. When this image was taken, Wilma's sustained winds were 120 kilometers per hour (75 miles per hour). Just 18 hours later, they were 280 km/hr (175 mph)! At that point, Wilma became the most powerful storm in terms of both wind speeds and air pressure ever measured in an Atlantic hurricane. Wilma also set records by becoming the 21st named storm of the 2005 Atlantic Hurricane season. This made 2005 the most active hurricane season on record, tied with 1933. Wilma's projected course on October 19 had the storm entering the Gulf of Mexico between western Cuba and the Yucatan Peninsula, then heading eastward across southern Florida. NASA image created by Jesse Allen, Earth Observatory, using data courtesy of the MODIS Rapid Response team. |
|
Hurricane Wilma
| Title |
Hurricane Wilma |
| Description |
Hurricane Wilma remained a powerful Category 4 storm when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite took this image at 12:25 p.m. Eastern Daylight Time, on Friday, October 21, 2005. Two days earlier, Wilma had surged from tropical storm to Category 5 hurricane in record time. Winds around the eyewall of the storm were raging at 280 kilometers per hour (175 miles per hour). National Oceanographic and Atmospheric Administration (NOAA) aircraft had also measured a record-low air pressure of 882 millibars in the center of Hurricane Wilma, making it the most intense hurricane ever observed in the Atlantic basin. Since then, Wilma has lost some of her history-making strength, but this is little comfort to those in her path. In this image, the storm eye is about to cross Cozumel, a small island just off the Yucatan Peninsula coast. Winds were peaking at 230 km/hr (145 mph) as the eyewall passed over the island, and hurricane-strength winds extended for 130 kilometers (85 miles) from the storm's center. As of Friday afternoon, Wilma was projected to continue into the Gulf of Mexico, bringing powerful winds and heavy rain to both western Cuba and the Yucatan Peninsula before turning toward southern Florida. Florida residents have already begun to prepare for the storm's arrival. Terra MODIS data acquired by direct broadcast at the University of South Florida (Judd Taylor) Image processed at the University of Wisconsin-Madison (Liam Gumley) |
|
Hurricane Wilma
| Title |
Hurricane Wilma |
| Description |
(MISR) acquired this sequence of images and cloud-top height observations for Hurricane Wilma as it progressed across the Caribbean in October 2005. Each pair in the sequence has a photo-like view of the storm on the left and a matching color-coded image of cloud-top height on the right. Cloud-top heights range from 0 (purple) to 18 (red) kilometers altitude. Areas where cloud heights could not be determined are shown in dark gray. The pair on the left shows Wilma on Tuesday, October 18, when Hurricane watches were posted for Cuba and Mexico. The central pair shows the eye of Hurricane Wilma just hours before the storm began to cross the Yucatan Peninsula on Friday, October 21. At that time, Wilma was a powerful Category 4 Hurricane on the Saffir-Simpson scale, and had a minimum recorded central pressure of 930 millibars. Hurricane Wilma surged from tropical storm to Category 5 hurricane status in record time, but the storm slowed and weakened considerably after battering Mexico's Yucatan Peninsula and the Caribbean. The right-hand image pair displays the eastern edges of a weakened Wilma, when Wilma had been reduced to Category 2 status and was just starting to reach southern Florida on the morning of Sunday, October 23. Wilma gathered speed and strengthened on Sunday night, crossing Florida as a Category 3 storm on Monday, October 24. On the 18th, Wilma looked a bit ragged. Its eye is located at the center of the left edge, and its outer bands of clouds appear to be dominated by a rather loose collection of thunderstorms. In the photo-like images, these look like areas of "boiling clouds," and in the cloud-height image, these appear as orange blobs, sometimes topped with pinkish-red. On October 21 (center), when Wilma was a Category 4 storm, cloud-top height on the eastern side of the storm near the eye reached 18 kilometers in altitude, with lower heights on the western side. The image from the 23rd shows the eastern edge of Wilma as it approached Florida (upper right) and Cuba (center right). MISR has nine different cameras that view the Earth from a variety of angles. Shifts in the clouds' apparent position from one camera's perspective to another's allows MISR to measure the height of the cloud-tops. MISR scientists have programmed computers to compare the different views, identify features that appear to shift from view to view, and use that information to calculate cloud height automatically. The height fields pictured have not been corrected for the effects of cloud motion. Wind-corrected heights (which have higher accuracy but sparser spatial coverage) are within about 1 kilometer of the heights shown here. The Multi-angle Imaging SpectroRadiometer observes the daylit Earth continuously, viewing the entire globe between 82° North and 82° South latitude every nine days. Each image covers an area of about 380 kilometers by 1,830 kilometers. The data products were generated from a portion of the imagery acquired during Terra orbits, 31037, 31081 and 31110, and utilize data from within blocks 68-83 within World Reference System-2 paths 13, 16 and 18, respectively. Image courtesy NASA/GSFC/LaRC/JPL, MISR Team. Text by Clare Averill (Raytheon RIS/JPL) and Greg McFarquhar (University of Illinois)., Information on cloud-top heights at different stages in the life cycle of the rapidly intensifying Hurricane Wilma may prove useful for evaluating the ability of numerical weather models to predict the intensity changes of hurricanes. NASA's Multi-angle Imaging SpectroRadiometer [ http://www-misr.jpl.nasa.gov/ ] |
|
Hurricane Wilma
| Title |
Hurricane Wilma |
| Description |
Hurricane Wilma was a powerful Category 3 storm after subjecting Mexico's Yucatan Peninsula to two days of rain and high winds. When the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite took this image at 12:15 p.m. Eastern Daylight Time, on October 23, 2005, Wilma was regaining some power as it crossed the Gulf of Mexico's warm waters. The outer edges of the hurricane were just starting to reach southern Florida at this time. While weaker than in recent days, Wilma was still a very powerful and dangerous storm. The eye of the storm is 80 kilometers (50 miles) wide, a size usually associated with the most powerful storms. Winds within the hurricane were reaching peak gusts of 230 kilometers per hour (145 miles per hour). As such storms are prone to do, it has been spawning tornadoes within the hurricane's reach, including one that touched down at NASA's Kennedy Space Center, causing some structural damage, though no reported injuries. Elsewhere, three deaths in Mexico had been attributed to the storm. The high-resolution image provided above has a spatial resolution of 250 meters per pixel. The MODIS Rapid Response Team provides this image at additional resolutions. [ http://rapidfire.sci.gsfc.nasa.gov/gallery/?2005296-1023/Wilma.A2005296.1615 ] NASA image courtesy Jeff Schmaltz, MODIS Rapid Response Team, [ http://rapidfire.sci.gsfc.nasa.gov ]Goddard Space Flight Center |
|
Hurricane Wilma Floods Flori
…
| Title |
Hurricane Wilma Floods Florida |
| Description |
Dark pools of water covered sections of Florida the day after Hurricane Wilma cut diagonally across the state. The patterns of flooding shown in this image are more a reflection of land use than the intensity of the storm. Wilma moved from the Gulf of Mexico in the west, over the Everglades, and then pounded the populated eastern shore as it made its exit into the Atlantic. The Category 3 hurricane brought heavy rain, which caused the inland flooding seen here. The Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured the top image on October 25, 2005. Shown in false color to increase the contrast between water and land, the image presents water in black and blue, vegetation in bright green, and clouds in pale blue and white. The lower image, taken on September 14, 2005, shows southern Florida under normal conditions. The most obvious flooding is in the Everglades, where the wetlands readily soaked up the downpour. Elevated roads form pale strips of green through the wetlands, which are dark with water in the wake of the storm. Between the Everglades and Lake Okeechobee is a lighter green arch of agricultural land. Dark squares hint at the possibility of flooded fields, but the presence of water in a few fields in the September image also suggests that some of the flooding may be intentional. Along the eastern shore of the peninsula, it is as if someone drew a line to mark out the edge of the wetlands from the pale green, grey, and tan grid of cities, including Miami and Fort Lauderdale. In fact, the line defines the boundary of Everglades National Park in the south. To the east of the park, the wetlands have been drained as cities sprung up. Here, no flooding is obvious, but the image shows signs of run-off. The Atlantic is bright blue with sediment. The sediment may have entered the water with flood water draining into the sea, it may be from storm-eroded beaches, or it may be sediment from the ocean floor brought to the surface with the churning of the sea under Wilma's winds. The bright ocean color in the Gulf of Mexico west of Florida is almost certainly caused by sediment from the ocean floor. NASA images courtesy Jesse Allen, based on data from the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] and the Goddard DAAC at NASA GSFC |
|
Hurricane Wilma Floods Flori
…
| Title |
Hurricane Wilma Floods Florida |
| Description |
Dark pools of water covered sections of Florida the day after Hurricane Wilma cut diagonally across the state. The patterns of flooding shown in this image are more a reflection of land use than the intensity of the storm. Wilma moved from the Gulf of Mexico in the west, over the Everglades, and then pounded the populated eastern shore as it made its exit into the Atlantic. The Category 3 hurricane brought heavy rain, which caused the inland flooding seen here. The Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured the top image on October 25, 2005. Shown in false color to increase the contrast between water and land, the image presents water in black and blue, vegetation in bright green, and clouds in pale blue and white. The lower image, taken on September 14, 2005, shows southern Florida under normal conditions. The most obvious flooding is in the Everglades, where the wetlands readily soaked up the downpour. Elevated roads form pale strips of green through the wetlands, which are dark with water in the wake of the storm. Between the Everglades and Lake Okeechobee is a lighter green arch of agricultural land. Dark squares hint at the possibility of flooded fields, but the presence of water in a few fields in the September image also suggests that some of the flooding may be intentional. Along the eastern shore of the peninsula, it is as if someone drew a line to mark out the edge of the wetlands from the pale green, grey, and tan grid of cities, including Miami and Fort Lauderdale. In fact, the line defines the boundary of Everglades National Park in the south. To the east of the park, the wetlands have been drained as cities sprung up. Here, no flooding is obvious, but the image shows signs of run-off. The Atlantic is bright blue with sediment. The sediment may have entered the water with flood water draining into the sea, it may be from storm-eroded beaches, or it may be sediment from the ocean floor brought to the surface with the churning of the sea under Wilma's winds. The bright ocean color in the Gulf of Mexico west of Florida is almost certainly caused by sediment from the ocean floor. NASA images courtesy Jesse Allen, based on data from the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] and the Goddard DAAC at NASA GSFC |
|
Hurricane Katrina: Natural H
…
nasa, nasanaturalhazards
A more serious danger is Kat
…
Katrina.A2005236.1550
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2005-08-24 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
Katrina.A2005236.1550 |
|
Hurricane Wilma: Natural Haz
…
nasa, nasanaturalhazards
Hurricane Wilma was a powerf
…
Wilma.A2005296.1615
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2005-10-23 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
Wilma.A2005296.1615 |
|
Hurricane Katrina Floods the
…
nasa, nasanaturalhazards
* eoimages.gsfc.nasa.gov/ima
…
Florida_TMO_2005240
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2005-08-28 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
Florida_TMO_2005240 |
|
Hurricane Katrina Floods the
…
nasa, nasanaturalhazards
* eoimages.gsfc.nasa.gov/ima
…
Florida_TMO_2005240
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2005-08-28 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
Florida_TMO_2005240 |
|
Hurricane Ophelia: Natural H
…
nasa, nasanaturalhazards
Ophelia was once again a hur
…
Ophelia.A2005254.1535
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2005-09-11 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
Ophelia.A2005254.1535 |
|
Hurricane Katrina: Natural H
…
nasa, nasanaturalhazards
A more serious danger is Kat
…
Katrina.A2005237.1630
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2005-08-25 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
Katrina.A2005237.1630 |
|
Saharan Dust Cloud Sails Tow
…
nasa, nasaimageofthedaygalle
…
A huge dust cloud blown west
…
PIA03539
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2005-07-20 |
| creator |
NASA -- Image courtesy NASA/GSFC/LaRC/JPL, www-misr.jpl.nasa.gov/ MISR Team |
| identifier |
PIA03539 |
|
Saharan Dust Cloud Sails Tow
…
PIA03539
Sol (our sun)
Multi-angle Imaging SpectroR
…
| Title |
Saharan Dust Cloud Sails Toward U.S. |
| Original Caption Released with Image |
A huge dust cloud blown westward from the Algerian desert is now wafting over the southeastern United States. The cloud, about the size of the entire continent, was expected to produce dramatic sunsets and possibly a light coating of red-brown dust on vehicles from Florida to Texas. This image, captured by JPL's Multi-angle Imaging SpectroRadiometer (MISR) aboard the NASA Earth Observing System's Terra Satellite on July 20, 2005, shows the dust cloud just off the west coast of Africa near Mauritania and Senegal. The image covers about 1,800 kilometers (1,200 miles) north-south, and 400 kilometers (260 miles) east-west. MISR, which views Earth at nine different angles in four wavelengths, can derive the amount, size and shape of airborne particles. This means it can distinguish desert dust, by far the most common non-spherical atmospheric aerosol, from pollution and forest fire particles, which are typically spherical. This image was taken by MISR's 26 degree forward-viewing camera on Terra Orbit 29724, Path 208, Blocks 69-81. The Multi-angle Imaging SpectroRadiometer [ http://www-misr.jpl.nasa.gov/ ] observes the daylit Earth continuously from pole to pole, and the entire globe about once per week. MISR was built and is managed by NASA's Jet Propulsion Laboratory, Pasadena, CA, for NASA's Office of Earth Science, Washington, DC. The Terra satellite is managed by NASA's Goddard Space Flight Center, Greenbelt, MD. JPL is a division of the California Institute of Technology. |
|
Tracking Hurricane Wilma Acr
…
PIA04386
Sol (our sun)
Multi-angle Imaging SpectroR
…
| Title |
Tracking Hurricane Wilma Across the Caribbean |
| Original Caption Released with Image |
Information on cloud top heights at different stages in the life cycle of the rapidly intensifying Hurricane Wilma may prove useful for evaluating the ability of numerical weather models to predict the intensity changes of hurricanes. NASA's Multi-angle Imaging SpectroRadiometer (MISR) acquired this sequence of images and cloud-top height observations for Hurricane Wilma as it progressed across the Caribbean in October 2005. Each pair in the sequence has a photo-like view of the storm on the left and a matching color-coded image of cloud-top height on the right. Cloud-top heights range from 0 (purple) to 18 (red) kilometers altitude. Areas where cloud heights could not be determined are shown in dark gray. The pair on the left show Wilma on Tuesday, October 18, when Hurricane watches were posted for Cuba and Mexico. The central pair shows the eye of Hurricane Wilma just hours before the storm began to cross the Yucatan Peninsula on Friday, October 21. At that time, Wilma was a powerful Category 4 Hurricane on the Saffir-Simpson scale, and had a minimum recorded central pressure of 930 millibars. Hurricane Wilma surged from tropical storm to Category 5 hurricane status in record time, but the storm slowed and weakened considerably after battering Mexico's Yucatan Peninsula and the Caribbean. The right-hand image pair displays the eastern edges of a weakened Wilma, when Wilma had been reduced to Category 2 status and was just starting to reach southern Florida on the morning of Sunday, October 23. Wilma gathered speed and strengthened on Sunday night, crossing Florida as a Category 3 storm on Monday, October 24. On the 18th, Wilma looked a bit ragged. Its eye is located at the center of the left edge, and its outer bands of clouds appear to be dominated by a rather loose collection of thunderstorms. In the photo-like images, these look like areas of "boiling clouds," and in the cloud-height image, these appear as orange blobs, sometimes topped with pinkish-red. On October 21 (center), when Wilma was a Category 4 storm, cloud-top height on the eastern side of the storm near the eye reached 18 kilometers in altitude, with lower heights on the western side. The image from the 23rd shows the eastern edge of Wilma as it approached Florida (upper right) and Cuba (center right). MISR has nine different cameras which view the Earth from a variety of angles. Shifts in the clouds' apparent position from one camera's perspective to another's allows MISR to measure the height of the cloud-tops. MISR scientists have programmed computers to compare the different views, identify features that appear to shift from view to view, and use that information to calculate cloud height automatically. The height fields pictured have not been corrected for the effects of cloud motion. Wind-corrected heights (which have higher accuracy but sparser spatial coverage) are within about 1 kilometer of the heights shown here. The Multi-angle Imaging SpectroRadiometer, observes the daylit Earth continuously, viewing the entire globe between 82° north and 82° south latitude every nine days. Each image covers an area of about 380 kilometers by 1830 kilometers. The data products were generated from a portion of the imagery acquired during Terra orbits 31037, 31081 and 31110, and utilize data from within blocks 68-83 within World Reference System-2 paths 13, 16 and 18, respectively. MISR was built and is managed by NASA's Jet Propulsion Laboratory, Pasadena, CA, for NASA's Science Mission Directorate, Washington, DC. The Terra satellite is managed by NASA's Goddard Space Flight Center, Greenbelt, MD. JPL is managed for NASA by the California Institute of Technology. |
|
|
