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Venice, Italy & the Alps Kid …
Conray Tseng, KidSat KidSat …
1/22/97
Date 1/22/97
Description Conray Tseng, KidSat KidSat Image STS081.ESC.01002012 This KidSat image spans the region of Venetia from the city of Venice, Italy, on the coast of the Adriatic Sea north to the snow-capped Alps. Venice appears in the upper right part of the image, and the Alps appear in the upper left. This image is 97.78 km long by 146.31 km wide and is centered at 45.56 degrees north latitude, 11.48 degrees east longitude. Due to shuttle orientation, north is located at approximately ten o'clock in this image. It was taken by the KidSat electronic still camera, using a 50 mm lens, from the Space Shuttle Atlantis flight STS-81 at an altitude of 264.57 km. The image was requested by the Buist Academy Student Mission Operations Center in Charleston, South Carolina. The students will use the image in their classrooms to study the rivers and channels of Venice and to compare the cities of Venice and Paris, France. Venice's Grand Canal is barely visible in the image. Venice was one of the centers of science, knowledge and art during the Renaissance, as well as a major trade center for goods from Asia. Located near fishing and forest resources, it was first settled by a variety of people that included war refugees from Troy and immigrants from what are now the Slavic nations. The first settlement, consisting mostly of wood buildings, was destroyed after a massive sea quake, little remains of the original city. Settlements spread to encompass the islands in the mouth of the river Brenta and now cover a total 117 islands. In the nearby Alps are several waterfalls which, since 1977, have been the site of many ice climbing missions. KidSat gives students across the country a chance to view and learn about Earth using and commanding their own instruments in space. The KidSat project is a result of the effort and collaboration of NASA's Jet Propulsion Laboratory, Johns Hopkins University's Institute for Academic Advancement of Youth and the University of California, San Diego. Kidsat includes a payload of digital still and video cameras that fly on the Space Shuttle. Students operate these cameras from their classrooms, sending instructions to the Kidsat Mission Control Center at UC San Diego via the Internet to photograph specific regions of Earth they wish to study. Image data are sent to the Kidsat Data System at JPL during the mission and these images are accessible in the classroom in near-real time, again using the Internet. At JPL, students on the exploration team research the images. The KidSat project allows students to explore Earth from space and learn about its past and its fragile, ever-changing environment. Images and student results will be posted on the KidSat home page. Interested public school districts, teachers, and students may view the images and information provided by students during the mission via this World Wide Web site: http://www.jpl.nasa.gov/kidsat The KidSat pilot program is sponsored by NASA's Office of Human Resources and Education, with support from the Offices of Space Flight, Mission to Planet Earth and Space Science. #####
San Marino Enclave in Italy
Title San Marino Enclave in Italy
Description With an area of just 61 square kilometers (23.5 square miles), Serenissima Repubblica di San Marino (Italian for "Most Serene Republic of San Marino") is the third-littlest country in Europe, behind Monaco and Vatican City. With a population of just over 28,000 as of January 2005, it is also one of the least populous nations in the world. Located in the northern part of the Italian Peninsula, near the Adriatic Sea, this tiny nation is surrounded by Italy. On June 7, 2001, the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) [ http://asterweb.jpl.nasa.gov ] on NASA's Terra [ http://terra.nasa.gov ] satellite took this picture of San Marino and the part of Italy immediately surrounding it. The image shows a combination of vegetation (bright green), and buildings, pavement, and bare rock (blue-gray to white). Purplish-gray polygons are probably fallow agricultural land. Overhead, fluffy white clouds cast their charcoal-colored shadows over the land surface. The Apennine Mountains give the region a rough terrain, and the limestone Monte Titano dominates the area, with a fort perched on each of the mountain's three summits. According to legend, San Marino [ http://encarta.msn.com/encyclopedia_761565721/San_Marino.html ] is the world's oldest surviving republic, dating back to 301. The original city sits atop Monte Titano. Today, however, development has spread throughout the republic, evidenced by the many areas of blue-gray and the meandering roads. Tourism has brought prosperity to this small republic, but historically, its rugged terrain and lack of wealth may have helped it escape the unwanted attention of potential invaders. NASA image created by Jesse Allen, using data provided courtesy of NASA/GSFC/MITI/ERSDAC/JAROS, and the U.S./Japan ASTER Science Team. [ http://asterweb.jpl.nasa.gov/ ]
Venice, Italy & the Alps fro …
PIA00546
Sol (our sun)
Electronic Still Camera
Title Venice, Italy & the Alps from the Shuttle KidSat Camera
Original Caption Released with Image Earth and Space Science., This KidSat image spans the region of Venetia from the city of Venice, Italy, on the coast of the Adriatic Sea north to the snow-capped Alps. Venice appears in the lower left part of the image, and the Alps appear in the lower right. This image is 97.78 km long by 146.31 km wide and is centered at 45.56 degrees north latitude, 11.48 degrees east longitude. Due to shuttle orientation, north is located at approximately ten o'clock in this image. It was taken by the KidSat electronic still camera, using a 50 mm lens, from the Space Shuttle Atlantis at an altitude of 264.57 km. The image was requested by the Buist Academy Student Mission Operations Center in Charleston, South Carolina. The students will use the image in their classrooms to study the rivers and channels of Venice and to compare the cities of Venice and Paris, France. Venice's Grand Canal is barely visible in the image. Venice was one of the centers of science, knowledge and art during the Renaissance, as well as a major trade center for goods from Asia. Located near fishing and forest resources, it was first settled by a variety of people that included war refugees from Troy and immigrants from what are now the Slavic nations. The first settlement, consisting mostly of wood buildings, was destroyed after a massive sea quake, little remains of the original city. Settlements spread to encompass the islands in the mouth of the river Brenta and now cover a total 117 islands. In the nearby Alps are several waterfalls which, since 1977, have been the site of many ice climbing missions. KidSat gives students across the country a chance to view and learn about Earth using and commanding their own instruments in space. The KidSat project is a result of the effort and collaboration of NASA's Jet Propulsion Laboratory, Johns Hopkins University's Institute for Academic Advancement of Youth and the University of California, San Diego. Kidsat includes a payload of digital still and video cameras that fly on the Space Shuttle. Students operate these cameras from their classrooms, sending instructions to the Kidsat Mission Control Center at UC San Diego via the Internet to photograph specific regions of Earth they wish to study. Image data are sent to the Kidsat Data System at JPL during the mission and these images are accessible in the classroom in near-real time, again using the Internet. At JPL, students on the exploration team research the images. The KidSat project allows students to explore Earth from space and learn about its past and its fragile, ever-changing environment. Images and student results will be posted on the KidSat home page. Interested public school districts, teachers, and students may view the images and information provided by students during the mission via this World Wide Web site: http://www.jpl.nasa.gov/kidsat The KidSat pilot program is sponsored by NASA's Office of Human Resources and Education, with support from the Offices of Space Flight, Mission to Planet
Alba Patera
PIA03774
Sol (our sun)
Thermal Emission Imaging Sys …
Title Alba Patera
Original Caption Released with Image (Released 22 April 2002) The Science This image, centered near 46.5 N and 119.3 W (240.7 E), is on the northwestern flank of a large, broad shield volcano called Alba Patera. This region of Mars has a number of unique valley features that at first glance look dendritic much in the same pattern that rivers and tributaries form on Earth. A closer look reveals that the valleys are quite discontinuous and must form through a different process than surface runoff of liquid water that is common on Earth. A number of processes might have taken place at some point in the Martian past to form these features. Some of the broad valley features bear some resemblance to karst topography, where material is removed underground by melting or dissolving in groundwater causing the collapse of the surface above it. The long narrow valleys resemble surfaces where groundwater sapping has occurred. Sapping happens when groundwater reaches the surface and causes headward erosion, forming long valleys with fewer tributaries than is seen with valleys formed by surface water runoff. The volcano itself might have been a source of heat and energy, which played a role in producing surfaces that indicate an active groundwater system. The Story Fluid, oozing lava poured somewhat lazily over this area long ago. It happened perhaps thousands of times, over hundreds of thousands of Martian years, creating the nearly smooth, plaster-of-Paris-looking terrain seen today. (Small craters also dent the area, though they may deceive you and look like raised bumps instead. That's just a trick of the eye and the lighting - tilt your head to your left shoulder, and you should see the craters pit the surface as expected.) The lava flows came from a Martian "shield" volcano named Alba Patera. Shield volcanoes get their name from their appearance: from above, they look like large battle shields lying face up to the sky as if a giant, geological warrior had lain them down. Perhaps one did if you think of a volcano as a "geologic warrior," that is. These volcanoes aren't too fierce, however. Because of the gentle layering of lava over time, they don't stand tall and angry against the horizon, but instead have relatively gentle slopes and are spread out over large areas. (On Earth, the Hawaiian Islands are examples of shield volcanoes, but you can't see much of their expanse, since they rise almost three miles from the ocean floor before popping out above the water's surface.) What's most interesting in this picture are all of the branching features that lightly texture the terrain. The patterns may look like those caused by rivers here on Earth, but geologists say that no surface streams on Mars were responsible. That's no disappointment, however, to those who'd like to find water on Mars, because there are still intriguing water-related possibilities here. Some of the broad valley features in this image look like karsts, a terrain found on Earth in Karst, a limestone area on the Adriatic, Sea in modern-day Croatia, and in other world regions including France, China, the American Midwest, Kentucky, and Florida. Karst terrain on Earth is barren land with all kinds of caves, sinkholes, and underground rivers that excavate the subsurface, causing the surface above it to collapse. So, perhaps it's like that in this region on Mars as well. Future Martian spelunkers should be excited, because most caves on Earth are in karst areas. Other suggestions of water here are some long, narrow valleys that resemble Earth surfaces where groundwater has sapped away the terrain. Sapping occurs when groundwater erodes slopes, creating valleys. Water action can be concentrated at valley heads, leading to what is called their "headward growth." That may be what has happened here on Alba Patera as well. All of these features suggest the action of liquid water, but Mars is so cold, you might wonder if any water would have to be as frozen as the world it is on. Well . . . that depends! Remember that this area is part of a volcano, and volcanoes can put out enough heat and energy below the surface to keep water warm enough to flow - if not now, then at least in the past when the volcano was more active.
Alba Patera
PIA03774
Sol (our sun)
Thermal Emission Imaging Sys …
Title Alba Patera
Original Caption Released with Image (Released 22 April 2002) The Science This image, centered near 46.5 N and 119.3 W (240.7 E), is on the northwestern flank of a large, broad shield volcano called Alba Patera. This region of Mars has a number of unique valley features that at first glance look dendritic much in the same pattern that rivers and tributaries form on Earth. A closer look reveals that the valleys are quite discontinuous and must form through a different process than surface runoff of liquid water that is common on Earth. A number of processes might have taken place at some point in the Martian past to form these features. Some of the broad valley features bear some resemblance to karst topography, where material is removed underground by melting or dissolving in groundwater causing the collapse of the surface above it. The long narrow valleys resemble surfaces where groundwater sapping has occurred. Sapping happens when groundwater reaches the surface and causes headward erosion, forming long valleys with fewer tributaries than is seen with valleys formed by surface water runoff. The volcano itself might have been a source of heat and energy, which played a role in producing surfaces that indicate an active groundwater system. The Story Fluid, oozing lava poured somewhat lazily over this area long ago. It happened perhaps thousands of times, over hundreds of thousands of Martian years, creating the nearly smooth, plaster-of-Paris-looking terrain seen today. (Small craters also dent the area, though they may deceive you and look like raised bumps instead. That's just a trick of the eye and the lighting - tilt your head to your left shoulder, and you should see the craters pit the surface as expected.) The lava flows came from a Martian "shield" volcano named Alba Patera. Shield volcanoes get their name from their appearance: from above, they look like large battle shields lying face up to the sky as if a giant, geological warrior had lain them down. Perhaps one did if you think of a volcano as a "geologic warrior," that is. These volcanoes aren't too fierce, however. Because of the gentle layering of lava over time, they don't stand tall and angry against the horizon, but instead have relatively gentle slopes and are spread out over large areas. (On Earth, the Hawaiian Islands are examples of shield volcanoes, but you can't see much of their expanse, since they rise almost three miles from the ocean floor before popping out above the water's surface.) What's most interesting in this picture are all of the branching features that lightly texture the terrain. The patterns may look like those caused by rivers here on Earth, but geologists say that no surface streams on Mars were responsible. That's no disappointment, however, to those who'd like to find water on Mars, because there are still intriguing water-related possibilities here. Some of the broad valley features in this image look like karsts, a terrain found on Earth in Karst, a limestone area on the Adriatic, Sea in modern-day Croatia, and in other world regions including France, China, the American Midwest, Kentucky, and Florida. Karst terrain on Earth is barren land with all kinds of caves, sinkholes, and underground rivers that excavate the subsurface, causing the surface above it to collapse. So, perhaps it's like that in this region on Mars as well. Future Martian spelunkers should be excited, because most caves on Earth are in karst areas. Other suggestions of water here are some long, narrow valleys that resemble Earth surfaces where groundwater has sapped away the terrain. Sapping occurs when groundwater erodes slopes, creating valleys. Water action can be concentrated at valley heads, leading to what is called their "headward growth." That may be what has happened here on Alba Patera as well. All of these features suggest the action of liquid water, but Mars is so cold, you might wonder if any water would have to be as frozen as the world it is on. Well . . . that depends! Remember that this area is part of a volcano, and volcanoes can put out enough heat and energy below the surface to keep water warm enough to flow - if not now, then at least in the past when the volcano was more active.
Aerosols over Central and Ea …
PIA04325
Sol (our sun)
Multi-angle Imaging SpectroR …
Title Aerosols over Central and Eastern Europe
Original Caption Released with Image Particulate air pollution is a complex mixture of particles of varying origins and compositions. Determining the type and abundance of tiny airborne particles, known as aerosols, is needed for monitoring air quality and for understanding climate change. During the last weeks of March 2003, unusually high and widespread aerosol pollution was detected over Europe by several satellite-borne instruments. The Multi-angle Imaging SpectroRadiometer (MISR) instrument aboard NASA's Terra satellite determines aerosol amount and information about particle properties by examining the variation in scene brightness at different view angles. These images and data products illustrate the amount of aerosols on two dates over parts of Central and Eastern Europe, from the Baltic Sea in the north to the Adriatic Sea in the south. Two groups of three panels are shown. Within each group, the left and center views are natural-color images from MISR's vertical-viewing (nadir) and most obliquely forward-viewing cameras, respectively, and the right-hand panel is a map of retrieved aerosol amount, parameterized by a quantity called the optical depth. A color scale is used to represent this quantity, and high aerosol amount is indicated by yellow or green pixels, and clearer skies are indicated by blue pixels. The left-hand group of panels is comprised of data acquired on February 23, 2003, when most of the land area was still partially frozen. The right-hand group of panels portrays the same area about one month later, on March 27. The nadir camera enables surface features to stand out most clearly, whereas MISR's oblique cameras enhance sensitivity to even thin layers of aerosols. In the March image, the only strong indications of haze from the nadir view are the thin tendrils of grayish pixels over the dark waters of the Baltic Sea. Although aerosols are conventionally difficult to discern over bright surfaces, MISR is able to produce an aerosol abundance map for both the earlier snow-covered scene and for the later date, though fewer successful retrievals were obtained in the winter data. Skies were relatively clear in the earlier view, and the high optical depths implied by the red pixels are probably blunders due either to the homogeneity of the underlying snow-covered surface or the presence of unscreened clouds. In contrast, the March data show a thick haze over most of the lower-elevation parts of the observed area. Optical depths are relatively lower over the Julian Alps and the mountains of western Croatia (just north of the Adriatic), whereas higher abundances are observed to the north of the mountains and over eastern Croatia. There is a gradual transition from higher optical depths in western Poland to lower optical depths in Lithuania and along the eastern coast of the Baltic. Higher optical depths are also indicated over much of Hungary, Slovakia and eastern Austria. Places where clouds or other factors precluded an aerosol retrieval are otherwise shown in, dark gray. An overview [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=8637 ] of the haze extent and meteorological conditions for March 28, 2003 is also available from the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) sensor. The Multi-angle Imaging SpectroRadiometer observes the daylit Earth continuously and every 9 days views the entire globe between 82 degrees north and 82 degrees south latitude. These data products were generated from a portion of the imagery acquired during Terra orbits 16937 and 17403. The panels cover an area of about 380 kilometers x 1775 kilometers, and use data from blocks 43 to 55 within World Reference System-2 path 190. 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 ofTechnology.
AIRS First Light Data: Easte …
PIA00326
Sol (our sun)
Atmospheric Infrared Sounder …
Title AIRS First Light Data: Eastern Mediterranean, June 14, 2002
Original Caption Released with Image Four images of the Mediterranean obtained concurrently on June 14, 2002 from the three instruments that make up the Atmospheric Infrared Sounder experiment system aboard NASA's Aqua spacecraft. The system features thousands of individual channels that observe Earth in the visible, infrared and microwave spectral regions. Each channel has a unique sensitivity to temperature, moisture, surface conditions and clouds. This visible light image from the AIRS instrument shows a band of white clouds extending from the Adriatic Sea over Greece to the Black Sea. The AIRS image (figure 1) at 900 cm-1 (11 micrometers) measures actual surface or cloud top temperatures. In it, land and ocean boundaries are well defined, with land appearing as warmer (darker red) than the ocean. The band of cold high cumulus clouds appears blue, with the darkest blue most likely a large thunderstorm. The 150 gigahertz channel from the Humidity Sounder for Brazil instrument (figure 2) is sensitive to moisture, ice particles and precipitation. The dry land temperature is comparable to the 11 micrometer temperatures, but over ocean this channel measures the temperature of moisture in the mid troposphere. The cold, blue areas off Sicily and in the Aegean Sea represent unusually dry areas over the ocean. There, clouds appear as green filaments--likely areas of precipitation. The 31.4 gigahertz channel from the Advanced Microwave Sounding Unit instrument (figure 3) is not affected by clouds. NASA's Atmospheric Infrared Sounder (AIRS) onboard NASA's Aqua spacecraft, began sending high quality data on June 12, 2002. This "first light" data is exceeding the expectations of scientists, confirming that the AIRS experiment is well on its way to meeting its goals of improving weather forecasting, establishing the connection between severe weather and climate change, determining if the global water cycle is accelerating, and detecting the effects of increased greenhouse gases. The AIRS sounding suite is a tightly integrated remote sensing system that will be used to create global three-dimensional maps of temperature, humidity and clouds in the Earth's atmosphere with unprecedented accuracy. This will lead to better weather forecasts as well as a wealth of data that will be used to study and characterize and eventually predict the global climate. The AIRS system is made up of three of the six Aqua instruments - AIRS itself, which is an infrared sounder with an unprecedented 2378 spectral channels, complemented with a 4-channel visible/near-infrared imaging module, AMSU-A, which is a 15-channel microwave temperature sounder, and HSB, which is a 4-channel microwave humidity sounder. These instruments are carefully aligned with each other and scan the atmosphere in a synchronized way, giving us simultaneous multispectral views of a highly variable target. The Atmospheric Infrared Sounder is an instrument onboard NASA's Aqua satellite under the space agency's Earth Observing, System. The sounding system is making highly accurate measurements of air temperature, humidity, clouds and surface temperature. Data will be used to better understand weather and climate. It will also be used by the National Weather Service and the National Oceanic and Atmospheric Administration to improve the accuracy of their weather and climate models. The instrument was designed and built by Lockheed Infrared Imaging Systems (recently acquired by British Aerospace) under contract with JPL. The Aqua satellite mission is managed by NASA's Goddard Space Flight Center.
AIRS First Light Data: Easte …
PIA00326
Sol (our sun)
Atmospheric Infrared Sounder …
Title AIRS First Light Data: Eastern Mediterranean, June 14, 2002
Original Caption Released with Image Four images of the Mediterranean obtained concurrently on June 14, 2002 from the three instruments that make up the Atmospheric Infrared Sounder experiment system aboard NASA's Aqua spacecraft. The system features thousands of individual channels that observe Earth in the visible, infrared and microwave spectral regions. Each channel has a unique sensitivity to temperature, moisture, surface conditions and clouds. This visible light image from the AIRS instrument shows a band of white clouds extending from the Adriatic Sea over Greece to the Black Sea. The AIRS image (figure 1) at 900 cm-1 (11 micrometers) measures actual surface or cloud top temperatures. In it, land and ocean boundaries are well defined, with land appearing as warmer (darker red) than the ocean. The band of cold high cumulus clouds appears blue, with the darkest blue most likely a large thunderstorm. The 150 gigahertz channel from the Humidity Sounder for Brazil instrument (figure 2) is sensitive to moisture, ice particles and precipitation. The dry land temperature is comparable to the 11 micrometer temperatures, but over ocean this channel measures the temperature of moisture in the mid troposphere. The cold, blue areas off Sicily and in the Aegean Sea represent unusually dry areas over the ocean. There, clouds appear as green filaments--likely areas of precipitation. The 31.4 gigahertz channel from the Advanced Microwave Sounding Unit instrument (figure 3) is not affected by clouds. NASA's Atmospheric Infrared Sounder (AIRS) onboard NASA's Aqua spacecraft, began sending high quality data on June 12, 2002. This "first light" data is exceeding the expectations of scientists, confirming that the AIRS experiment is well on its way to meeting its goals of improving weather forecasting, establishing the connection between severe weather and climate change, determining if the global water cycle is accelerating, and detecting the effects of increased greenhouse gases. The AIRS sounding suite is a tightly integrated remote sensing system that will be used to create global three-dimensional maps of temperature, humidity and clouds in the Earth's atmosphere with unprecedented accuracy. This will lead to better weather forecasts as well as a wealth of data that will be used to study and characterize and eventually predict the global climate. The AIRS system is made up of three of the six Aqua instruments - AIRS itself, which is an infrared sounder with an unprecedented 2378 spectral channels, complemented with a 4-channel visible/near-infrared imaging module, AMSU-A, which is a 15-channel microwave temperature sounder, and HSB, which is a 4-channel microwave humidity sounder. These instruments are carefully aligned with each other and scan the atmosphere in a synchronized way, giving us simultaneous multispectral views of a highly variable target. The Atmospheric Infrared Sounder is an instrument onboard NASA's Aqua satellite under the space agency's Earth Observing, System. The sounding system is making highly accurate measurements of air temperature, humidity, clouds and surface temperature. Data will be used to better understand weather and climate. It will also be used by the National Weather Service and the National Oceanic and Atmospheric Administration to improve the accuracy of their weather and climate models. The instrument was designed and built by Lockheed Infrared Imaging Systems (recently acquired by British Aerospace) under contract with JPL. The Aqua satellite mission is managed by NASA's Goddard Space Flight Center.
AIRS First Light Data: Easte …
PIA00326
Sol (our sun)
Atmospheric Infrared Sounder …
Title AIRS First Light Data: Eastern Mediterranean, June 14, 2002
Original Caption Released with Image Four images of the Mediterranean obtained concurrently on June 14, 2002 from the three instruments that make up the Atmospheric Infrared Sounder experiment system aboard NASA's Aqua spacecraft. The system features thousands of individual channels that observe Earth in the visible, infrared and microwave spectral regions. Each channel has a unique sensitivity to temperature, moisture, surface conditions and clouds. This visible light image from the AIRS instrument shows a band of white clouds extending from the Adriatic Sea over Greece to the Black Sea. The AIRS image (figure 1) at 900 cm-1 (11 micrometers) measures actual surface or cloud top temperatures. In it, land and ocean boundaries are well defined, with land appearing as warmer (darker red) than the ocean. The band of cold high cumulus clouds appears blue, with the darkest blue most likely a large thunderstorm. The 150 gigahertz channel from the Humidity Sounder for Brazil instrument (figure 2) is sensitive to moisture, ice particles and precipitation. The dry land temperature is comparable to the 11 micrometer temperatures, but over ocean this channel measures the temperature of moisture in the mid troposphere. The cold, blue areas off Sicily and in the Aegean Sea represent unusually dry areas over the ocean. There, clouds appear as green filaments--likely areas of precipitation. The 31.4 gigahertz channel from the Advanced Microwave Sounding Unit instrument (figure 3) is not affected by clouds. NASA's Atmospheric Infrared Sounder (AIRS) onboard NASA's Aqua spacecraft, began sending high quality data on June 12, 2002. This "first light" data is exceeding the expectations of scientists, confirming that the AIRS experiment is well on its way to meeting its goals of improving weather forecasting, establishing the connection between severe weather and climate change, determining if the global water cycle is accelerating, and detecting the effects of increased greenhouse gases. The AIRS sounding suite is a tightly integrated remote sensing system that will be used to create global three-dimensional maps of temperature, humidity and clouds in the Earth's atmosphere with unprecedented accuracy. This will lead to better weather forecasts as well as a wealth of data that will be used to study and characterize and eventually predict the global climate. The AIRS system is made up of three of the six Aqua instruments - AIRS itself, which is an infrared sounder with an unprecedented 2378 spectral channels, complemented with a 4-channel visible/near-infrared imaging module, AMSU-A, which is a 15-channel microwave temperature sounder, and HSB, which is a 4-channel microwave humidity sounder. These instruments are carefully aligned with each other and scan the atmosphere in a synchronized way, giving us simultaneous multispectral views of a highly variable target. The Atmospheric Infrared Sounder is an instrument onboard NASA's Aqua satellite under the space agency's Earth Observing, System. The sounding system is making highly accurate measurements of air temperature, humidity, clouds and surface temperature. Data will be used to better understand weather and climate. It will also be used by the National Weather Service and the National Oceanic and Atmospheric Administration to improve the accuracy of their weather and climate models. The instrument was designed and built by Lockheed Infrared Imaging Systems (recently acquired by British Aerospace) under contract with JPL. The Aqua satellite mission is managed by NASA's Goddard Space Flight Center.
AIRS First Light Data: Easte …
PIA00326
Sol (our sun)
Atmospheric Infrared Sounder …
Title AIRS First Light Data: Eastern Mediterranean, June 14, 2002
Original Caption Released with Image Four images of the Mediterranean obtained concurrently on June 14, 2002 from the three instruments that make up the Atmospheric Infrared Sounder experiment system aboard NASA's Aqua spacecraft. The system features thousands of individual channels that observe Earth in the visible, infrared and microwave spectral regions. Each channel has a unique sensitivity to temperature, moisture, surface conditions and clouds. This visible light image from the AIRS instrument shows a band of white clouds extending from the Adriatic Sea over Greece to the Black Sea. The AIRS image (figure 1) at 900 cm-1 (11 micrometers) measures actual surface or cloud top temperatures. In it, land and ocean boundaries are well defined, with land appearing as warmer (darker red) than the ocean. The band of cold high cumulus clouds appears blue, with the darkest blue most likely a large thunderstorm. The 150 gigahertz channel from the Humidity Sounder for Brazil instrument (figure 2) is sensitive to moisture, ice particles and precipitation. The dry land temperature is comparable to the 11 micrometer temperatures, but over ocean this channel measures the temperature of moisture in the mid troposphere. The cold, blue areas off Sicily and in the Aegean Sea represent unusually dry areas over the ocean. There, clouds appear as green filaments--likely areas of precipitation. The 31.4 gigahertz channel from the Advanced Microwave Sounding Unit instrument (figure 3) is not affected by clouds. NASA's Atmospheric Infrared Sounder (AIRS) onboard NASA's Aqua spacecraft, began sending high quality data on June 12, 2002. This "first light" data is exceeding the expectations of scientists, confirming that the AIRS experiment is well on its way to meeting its goals of improving weather forecasting, establishing the connection between severe weather and climate change, determining if the global water cycle is accelerating, and detecting the effects of increased greenhouse gases. The AIRS sounding suite is a tightly integrated remote sensing system that will be used to create global three-dimensional maps of temperature, humidity and clouds in the Earth's atmosphere with unprecedented accuracy. This will lead to better weather forecasts as well as a wealth of data that will be used to study and characterize and eventually predict the global climate. The AIRS system is made up of three of the six Aqua instruments - AIRS itself, which is an infrared sounder with an unprecedented 2378 spectral channels, complemented with a 4-channel visible/near-infrared imaging module, AMSU-A, which is a 15-channel microwave temperature sounder, and HSB, which is a 4-channel microwave humidity sounder. These instruments are carefully aligned with each other and scan the atmosphere in a synchronized way, giving us simultaneous multispectral views of a highly variable target. The Atmospheric Infrared Sounder is an instrument onboard NASA's Aqua satellite under the space agency's Earth Observing, System. The sounding system is making highly accurate measurements of air temperature, humidity, clouds and surface temperature. Data will be used to better understand weather and climate. It will also be used by the National Weather Service and the National Oceanic and Atmospheric Administration to improve the accuracy of their weather and climate models. The instrument was designed and built by Lockheed Infrared Imaging Systems (recently acquired by British Aerospace) under contract with JPL. The Aqua satellite mission is managed by NASA's Goddard Space Flight Center.
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