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Sea Surface Height and Tempe …
Title Sea Surface Height and Temperature Anomalies on a Globe: Rotating to the Pacific Ocean
Abstract The 1997-98 El Niño was truly a global event. The sequence shows a superposition of sea surface temperature anomalies on anomalies of the sea surface elevation.
Completed 1998-11-23
Tropical Cyclone Crystal on …
Title Tropical Cyclone Crystal on December 25, 2002
Abstract Tropical Cyclone Crystal approaches the island of Mauritius in the Indian Ocean. The storm packed sustained winds of 80 miles per hour with gusts up to 96 miles per hour. Mauritius is situated east of Madagascar off of the Africa's southeastern coast. This animation shows the storm's rain structure with 5 different isosurfaces. The first isosurface is grey and depicts areas with 0.5 inches of rain per hour. The second is light blue and reflects 1.0 inches of rain per hour. The third is green and shows 1.7 inches of rain per hour. The forth is yellow and represents 2.0 inches of rain per hour. The last isosurface is red and shows 2.2 inches or more of rain.
Completed 2002-12-30
Tropical Cyclone Crystal on …
Title Tropical Cyclone Crystal on December 25, 2002
Abstract Tropical Cyclone Crystal approaches the island of Mauritius in the Indian Ocean. The storm packed sustained winds of 80 miles per hour with gusts up to 96 miles per hour. Mauritius is situated east of Madagascar off of the Africa's southeastern coast. This animation shows the storm's rain structure with 5 different isosurfaces. The first isosurface is grey and depicts areas with 0.5 inches of rain per hour. The second is light blue and reflects 1.0 inches of rain per hour. The third is green and shows 1.7 inches of rain per hour. The forth is yellow and represents 2.0 inches of rain per hour. The last isosurface is red and shows 2.2 inches or more of rain.
Completed 2002-12-30
Tropical Cyclone Crystal on …
Title Tropical Cyclone Crystal on December 25, 2002
Abstract Tropical Cyclone Crystal approaches the island of Mauritius in the Indian Ocean. The storm packed sustained winds of 80 miles per hour with gusts up to 96 miles per hour. Mauritius is situated east of Madagascar off of the Africa's southeastern coast. This animation shows the storm's rain structure with 5 different isosurfaces. The first isosurface is grey and depicts areas with 0.5 inches of rain per hour. The second is light blue and reflects 1.0 inches of rain per hour. The third is green and shows 1.7 inches of rain per hour. The forth is yellow and represents 2.0 inches of rain per hour. The last isosurface is red and shows 2.2 inches or more of rain.
Completed 2002-12-30
Tropical Cyclone Crystal on …
Title Tropical Cyclone Crystal on December 25, 2002
Abstract Tropical Cyclone Crystal approaches the island of Mauritius in the Indian Ocean. The storm packed sustained winds of 80 miles per hour with gusts up to 96 miles per hour. Mauritius is situated east of Madagascar off of the Africa's southeastern coast. This animation shows the storm's rain structure with 5 different isosurfaces. The first isosurface is grey and depicts areas with 0.5 inches of rain per hour. The second is light blue and reflects 1.0 inches of rain per hour. The third is green and shows 1.7 inches of rain per hour. The forth is yellow and represents 2.0 inches of rain per hour. The last isosurface is red and shows 2.2 inches or more of rain.
Completed 2002-12-30
Galileo Earth Views (WMS)
Title Galileo Earth Views (WMS)
Abstract The Galileo spacecraft was launched from the Space Shuttle Atlantis on October 18, 1989 on a six-year trip to Jupiter. On the way, the trajectory of the spacecraft took it past Venus once and Earth twice. Galileo took the Earth images in this animation just after the first flyby of the Earth, on December 11 and 12, 1990. This six-hour sequence of images taken two minutes apart clearly shows how the Earth looks from space and how fast (or slow) the cloud features change when looked at from a distance. The path of the sun can be seen crossing Australia by its reflection in the nearby ocean, and the terminator region between night and day can be seen moving across the Indian Ocean. In the original images, the Earth's rotation is so dominant that cloud movement is hard to see, but these images have been mapped to the Earth is such a way that a viewer can watch just the clouds move in the ocean around Antarctica or across the Austrailian land mass. In this animation, New Zealand can ony be seen as a stationary disturbance under a moving cloud bank. The black area with the sharp boundary to the north and east of Australia is the side of the Earth that could not be seen from Galileo's position.
Completed 2004-08-06
fvGCM Climate Model of Hurri …
Title fvGCM Climate Model of Hurricane Frances and other storms
Abstract This animation illustrates the output of NASA's finite-volume General Circulation Model (fvGCM) which is a global, 1/4 degree atmospheric model. Three dimensional volumetric representations of tropical cyclones are shown around the world including: Hurricane Francis in the Western Atlantic, Tropical Depression Ivan in the Eastern Atlantic, Tropical Cyclone Pheobe in the Indian Ocean, and Super Typhoon Songda in the Western North Pacific. The structures are defined by areas of high wind speeds. The colors represent total precipitable water (blue is low, red is high).
Completed 2004-11-03
Indonesian Tropospheric Ozon …
Title Indonesian Tropospheric Ozone and Aerosol Index
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2000-10-19
Indonesian Tropospheric Ozon …
Title Indonesian Tropospheric Ozone and Aerosol Index
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2000-10-19
Indonesian Tropospheric Ozon …
Title Indonesian Tropospheric Ozone and Aerosol Index
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2000-10-19
Indonesian Tropospheric Ozon …
Title Indonesian Tropospheric Ozone and Aerosol Index
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2000-10-19
Indonesian Tropospheric Ozon …
Title Indonesian Tropospheric Ozone and Aerosol Index
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2000-10-19
Tropospheric Ozone and Smoke …
Title Tropospheric Ozone and Smoke from Earth Probe TOMS: Indian Ocean
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2001-03-06
Tropospheric Ozone and Smoke …
Title Tropospheric Ozone and Smoke from Earth Probe TOMS: Indian Ocean
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2001-03-06
Tropospheric Ozone and Smoke …
Title Tropospheric Ozone and Smoke from Earth Probe TOMS: Indian Ocean
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2001-03-06
Tropospheric Ozone and Smoke …
Title Tropospheric Ozone and Smoke from Earth Probe TOMS: Indian Ocean
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2001-03-06
Tropospheric Ozone and Smoke …
Title Tropospheric Ozone and Smoke from Earth Probe TOMS: Indian Ocean
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2001-03-06
Tropospheric Ozone and Smoke …
Title Tropospheric Ozone and Smoke from Earth Probe TOMS: Indian Ocean
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2001-03-06
Sea Surface Height and Tempe …
Title Sea Surface Height and Temperature Anomalies on a Globe: Zoom and Rotate
Abstract The 1997-98 El Niño was truly a global event. The sequence shows a superposition of sea surface temperature anomalies on anomalies of the sea surface elevation.
Completed 1998-11-23
Tropospheric Ozone and Smoke …
Title Tropospheric Ozone and Smoke from Earth Probe TOMS: Indian Ocean to Indonesia Zoom
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2001-03-06
Tropospheric Ozone and Smoke …
Title Tropospheric Ozone and Smoke from Earth Probe TOMS: Indian Ocean to Indonesia Zoom
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2001-03-06
Sea Surface Height and Tempe …
Title Sea Surface Height and Temperature Anomalies on a Globe: The Indian Ocean
Abstract The 1997-98 El Niño was truly a global event. The sequence shows a superposition of sea surface temperature anomalies on anomalies of the sea surface elevation.
Completed 1998-11-23
Tropospheric Ozone and Smoke …
Title Tropospheric Ozone and Smoke from Earth Probe TOMS: Indonesia
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2001-03-06
Tropospheric Ozone and Smoke …
Title Tropospheric Ozone and Smoke from Earth Probe TOMS: Indonesia
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2001-03-06
Tropospheric Ozone and Smoke …
Title Tropospheric Ozone and Smoke from Earth Probe TOMS: Indonesia
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2001-03-06
Tropospheric Ozone and Smoke …
Title Tropospheric Ozone and Smoke from Earth Probe TOMS: Indonesia
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2001-03-06
Tropospheric Ozone and Smoke …
Title Tropospheric Ozone and Smoke from Earth Probe TOMS: Indonesia
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2001-03-06
Tropospheric Ozone and Smoke …
Title Tropospheric Ozone and Smoke from Earth Probe TOMS: Indonesia
Abstract Researchers have discovered that smoke and smog move in different ways through the atmosphere. A series of unusual events several years ago created a blanket of pollution over the Indian Ocean. In this animation, significant smog or tropospheric ozone is represented by red and green and regions of significant smoke index are in shades of white and gray.
Completed 2001-03-06
Agricultural Fires in Northw …
Title Agricultural Fires in Northwest India
Description On October 27, 2004, a thick curtain of aerosols hung over parts of northwestern India and Pakistan. A tight cluster of agricultural fires (marked in red) was burning and contributing smoke, which may have mixed with dust from nearby arid terrain and urban pollution from regional cities. Air pollution is a serious environmental problem for the region. In 1999, an international team of scientists conducted an intensive field campaign to study the air pollution and its possible impacts on regional and global climate. Called the Indian Ocean Experiment (INDOEX), [ http://www-indoex.ucsd.edu/ ] the effort provided worrisome evidence that the aerosol (particle) pollution existed in a layer as thick as 3 kilometers and spread thousands of kilometers away from the source. It persisted for weeks at a time throughout the winter. In addition to the impact on public health, the "brown cloud" may be diminishing the monsoon-related rainfall in southern Asia and reducing crop yields through the filtering of sunlight. This image was captured by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA?s Aqua satellite on October 27, 2004. NASA image created by Jesse Allen, Earth Observatory, using data obtained from the MODIS Rapid Response team.
Floods in Madagascar
Title Floods in Madagascar
Description *Floods in Madagascar* Mud-rich water gushes off the northwestern shore of Madagascar in the wake of Tropical Cyclone Elita [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=11929 ] in this Moderate Resolution Imaging Spectroradiometer [ http://modis.gsfc.nasa.gov ] (MODIS) image acquired by the Terra [ http://terra.nasa.gov/ ] satellite on February 8, 2004. The storm first came ashore near this area on January 29. Elita drifted down the west coast, and then pulled back into the Mozambique Channel, where it hovered offshore for many days, dropping as much as 20 inches of rain in northwestern Madagascar. On February 3, Elita cut across the island for a second time, spinning out into the Indian Ocean on February 4. By the time the storm passed, 18,000 people were left homeless and 6 died, according to the United Nations Office for the Coordination of Humanitarian Affairs. The intense rains destroyed buildings and pushed rivers to overflowing. When this image was taken, four days after the storm had passed, the rivers were still swollen with reddish mud. A halo of green rings the coast where sediment has washed off the shores and is diffusing in the ocean water. The high resolution image provided above has a resolution of 500 meters per pixel. The image is available in additional resolutions, including MODIS? maximum resolution of 250 meters per pixel. Image courtesy Jacques Descloitres, MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC
Floods in Northern Australia
Title Floods in Northern Australia
Description Though Cyclone George was a very weak storm when it passed over Australia's Northern Territory on March 1 and March 2, 2007, it brought widespread rain and high tides to the region. The rain and tides triggered floods along the coast and in river systems, which are shown in the top image, captured by the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite on March 8. The lower image, taken on February 15, 2007, shows the area before the storm came ashore. In these images, made with visible and infrared light, water is black or dark blue. Most striking in the March 8 image are the dark pools of water along the coast and in coastal inlets. The wetlands that jut in from the northern shore have expanded into wide, triangular rivers. To the southwest, the Daly River and nearby wetlands are also flooded. Signs of flooding are also visible in the Indian Ocean. Though sunlight reflecting off the water makes the color hard to distinguish, the water near shore is blue, not black as it was in February. When flood water drains into the ocean, it carries sediment from the run-off. The sediment scatters light, lending the water the blue color seen here. Clouds in this type of image are pale blue and white. According to the Australian Broadcasting Corporation News, the floods swamped the rail line that connects Darwin to southern Australia, cutting off rail travel. The floods also inundated the small community of Oenpelli, in the upper right corner of the image. By March 8, when the image was captured, the floods had started to recede. Daily images [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?Australia2/2007067 ] of the flood area are available from the MODIS Rapid Response System. NASA image courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC.
Floods in Northern Australia
Title Floods in Northern Australia
Description Though Cyclone George was a very weak storm when it passed over Australia's Northern Territory on March 1 and March 2, 2007, it brought widespread rain and high tides to the region. The rain and tides triggered floods along the coast and in river systems, which are shown in the top image, captured by the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite on March 8. The lower image, taken on February 15, 2007, shows the area before the storm came ashore. In these images, made with visible and infrared light, water is black or dark blue. Most striking in the March 8 image are the dark pools of water along the coast and in coastal inlets. The wetlands that jut in from the northern shore have expanded into wide, triangular rivers. To the southwest, the Daly River and nearby wetlands are also flooded. Signs of flooding are also visible in the Indian Ocean. Though sunlight reflecting off the water makes the color hard to distinguish, the water near shore is blue, not black as it was in February. When flood water drains into the ocean, it carries sediment from the run-off. The sediment scatters light, lending the water the blue color seen here. Clouds in this type of image are pale blue and white. According to the Australian Broadcasting Corporation News, the floods swamped the rail line that connects Darwin to southern Australia, cutting off rail travel. The floods also inundated the small community of Oenpelli, in the upper right corner of the image. By March 8, when the image was captured, the floods had started to recede. Daily images [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?Australia2/2007067 ] of the flood area are available from the MODIS Rapid Response System. NASA image courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC.
Floods in Northwestern Austr …
Title Floods in Northwestern Australia
Description Tropical Cyclone Monty brought heavy rain to drought-stricken regions of Western Australia. While welcome, the rain pushed the Fortescue River over its banks, cutting off a few small communities and isolated homesteads in the rural area. These false-color Moderate Resolution Imaging Spectroradiometer [ http://modis.gsfc.nasa.gov ] (MODIS) images show the Fortescue River on February 24, 2004, before Monty came ashore, and on March 3, just after the cyclone moved across the area. Blue-green streaks in the image taken on March 3 show where water covers the land. The Fortescue River appears particularly flooded near the coast, where a large fan shape has replaced the slender line water running into the Indian Ocean. The high-resolution images provided above are at MODIS' maximum resolution of 250 meters per pixel. Images courtesy Jesse Allen, based on data from the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC (March 3) and the EOS Data Pool (February 24).
Floods in Northwestern Austr …
Title Floods in Northwestern Australia
Description Tropical Cyclone Monty brought heavy rain to drought-stricken regions of Western Australia. While welcome, the rain pushed the Fortescue River over its banks, cutting off a few small communities and isolated homesteads in the rural area. These false-color Moderate Resolution Imaging Spectroradiometer [ http://modis.gsfc.nasa.gov ] (MODIS) images show the Fortescue River on February 24, 2004, before Monty came ashore, and on March 3, just after the cyclone moved across the area. Blue-green streaks in the image taken on March 3 show where water covers the land. The Fortescue River appears particularly flooded near the coast, where a large fan shape has replaced the slender line water running into the Indian Ocean. The high-resolution images provided above are at MODIS' maximum resolution of 250 meters per pixel. Images courtesy Jesse Allen, based on data from the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC (March 3) and the EOS Data Pool (February 24).
Floods in Northwestern Austr …
Title Floods in Northwestern Australia
Description Tropical Cyclone Monty brought heavy rain to drought-stricken regions of Western Australia. While welcome, the rain pushed the Fortescue River over its banks, cutting off a few small communities and isolated homesteads in the rural area. These false-color Moderate Resolution Imaging Spectroradiometer [ http://modis.gsfc.nasa.gov ] (MODIS) images show the Fortescue River on February 24, 2004, before Monty came ashore, and on March 3, just after the cyclone moved across the area. Blue-green streaks in the image taken on March 3 show where water covers the land. The Fortescue River appears particularly flooded near the coast, where a large fan shape has replaced the slender line water running into the Indian Ocean. The high-resolution images provided above are at MODIS' maximum resolution of 250 meters per pixel. Images courtesy Jesse Allen, based on data from the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC (March 3) and the EOS Data Pool (February 24).
Floods in Southern Africa
Title Floods in Southern Africa
Description Widespread floods were evident in central Mozambique when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Aqua [ http://aqua.nasa.gov/ ] satellite captured the top image on January 23, 2007. Water, black against the bright green vegetation in these infrared-enhanced images, spreads in a wide line parallel to the coast. A week earlier, when MODIS on the Terra [ http://terra.nasa.gov/ ] satellite acquired the lower image, the water was isolated to the wetlands around the river. According to local news reports, [ http://allafrica.com/stories/200701220205.html ] parts of the provincial capital, Quelimane, were under water after 339.2 millimeters of rain fell in 24 hours on January 21, more rain than the region typically receives during the entire month of January. The floods forced at least 400 families from their homes in the city. Though Quelimane was visible on January 16 as a pale brown-gray patch on the north bank of the river, it was covered by clouds on January 23. The clouds are pale blue and white in these false-color images. The silvery color of the Indian Ocean in the lower image is caused by sunlight reflecting off the water's surface. Daily images [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?Mozambique/2007023 ] of Mozambique are available from the MODIS Rapid Response System. NASA image courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC.
Floods in Southern Africa
Title Floods in Southern Africa
Description Widespread floods were evident in central Mozambique when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Aqua [ http://aqua.nasa.gov/ ] satellite captured the top image on January 23, 2007. Water, black against the bright green vegetation in these infrared-enhanced images, spreads in a wide line parallel to the coast. A week earlier, when MODIS on the Terra [ http://terra.nasa.gov/ ] satellite acquired the lower image, the water was isolated to the wetlands around the river. According to local news reports, [ http://allafrica.com/stories/200701220205.html ] parts of the provincial capital, Quelimane, were under water after 339.2 millimeters of rain fell in 24 hours on January 21, more rain than the region typically receives during the entire month of January. The floods forced at least 400 families from their homes in the city. Though Quelimane was visible on January 16 as a pale brown-gray patch on the north bank of the river, it was covered by clouds on January 23. The clouds are pale blue and white in these false-color images. The silvery color of the Indian Ocean in the lower image is caused by sunlight reflecting off the water's surface. Daily images [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?Mozambique/2007023 ] of Mozambique are available from the MODIS Rapid Response System. NASA image courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC.
Floods in Southern Africa
Title Floods in Southern Africa
Description The Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Aqua [ http://aqua.nasa.gov/ ] satellite acquired these two images of the Zambezi River in central Mozambique in February 2007 just four days apart. Over the course of a weekend, floods along the lower Zambezi River in Mozambique spread to a nearby branch, the Cuecue River. According to local news reports released by the Agencia de Informacao de Mocambique, the floods along the Zambezi started to drop on February 20, though water levels on the lower Zambezi, shown here, remained high. As the top image shows, some of the water is draining into smaller offshoots along the river valley and into the Indian Ocean. These images use both visible and infrared light to increase the contrast between water and land. In this color combination, water is black or dark blue, while bare ground is tan and plant-covered land is green. Clouds are blue and white. The Sun's reflection off the surface of the water turns the river pale blue in the top image, and a web of flood water surrounds the dark line cut by the Zambezi River across the center of both images. South of the fresh floods on the Cuecue River, several dark spots along the Zambezi indicate additional flooding. To see daily images [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?Mozambique/2007051 ] of the flood area in central Mozambique, please visit the MODIS Rapid Response web site. The floods started when unusually early and heavy rain pounded southern Africa in January and February 2007. The rains triggered floods that affected nearly 170,000 people in Angola, Madagascar, Malawi, Mozambique, Zambia, and Zimbabwe, said the United Nations Office for the Coordination of Humanitarian Affairs (OCHA [ http://www.reliefweb.int/rw/RWB.NSF/db900SID/YSAR-6YLNES?OpenDocument ]). In Mozambique, the United Nations and other organizations were providing food to more than 120,000 evacuees as of February 20, said OCHA. NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC.
Floods in Southern Africa
Title Floods in Southern Africa
Description The Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Aqua [ http://aqua.nasa.gov/ ] satellite acquired these two images of the Zambezi River in central Mozambique in February 2007 just four days apart. Over the course of a weekend, floods along the lower Zambezi River in Mozambique spread to a nearby branch, the Cuecue River. According to local news reports released by the Agencia de Informacao de Mocambique, the floods along the Zambezi started to drop on February 20, though water levels on the lower Zambezi, shown here, remained high. As the top image shows, some of the water is draining into smaller offshoots along the river valley and into the Indian Ocean. These images use both visible and infrared light to increase the contrast between water and land. In this color combination, water is black or dark blue, while bare ground is tan and plant-covered land is green. Clouds are blue and white. The Sun's reflection off the surface of the water turns the river pale blue in the top image, and a web of flood water surrounds the dark line cut by the Zambezi River across the center of both images. South of the fresh floods on the Cuecue River, several dark spots along the Zambezi indicate additional flooding. To see daily images [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?Mozambique/2007051 ] of the flood area in central Mozambique, please visit the MODIS Rapid Response web site. The floods started when unusually early and heavy rain pounded southern Africa in January and February 2007. The rains triggered floods that affected nearly 170,000 people in Angola, Madagascar, Malawi, Mozambique, Zambia, and Zimbabwe, said the United Nations Office for the Coordination of Humanitarian Affairs (OCHA [ http://www.reliefweb.int/rw/RWB.NSF/db900SID/YSAR-6YLNES?OpenDocument ]). In Mozambique, the United Nations and other organizations were providing food to more than 120,000 evacuees as of February 20, said OCHA. NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC.
Floods in Southern India
Title Floods in Southern India
Description Days of persistent rain caused widespread flooding in Southern India's Tamil Nadu state in late November 2005. The Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured these two images, which contrast conditions before the floods on November 18, lower image, and during the floods on November 27, top. The images are shown in false color to make water easier to see. In this color combination, water is dark blue or black, plant-covered land is green, clouds are pale blue and white, and bare earth is tan. The images focus on the mouth of the Kollidam River, though the floods extend over a much larger region. Swollen with water, the river and other streams emptying into the Bay of Bengal spread across a wide section of the coast. This same section of coast was also impacted by the December 2004 Indian Ocean tsunami. According to the United Nations Development Program, well over 2 million people have been affected by flooding in Tamil Nadu. The floods have disrupted transportation and destroyed crops across the state. The MODIS Rapid Response Team provides daily images of India in a variety of resolutions. NASA image courtesy the MODIS Rapid Response Team at Goddard Space Flight Center.
Floods in West Africa
Title Floods in West Africa
Description The season's rain came late to parts of the African Sahel, but the tardy downpour was heavy and steady throughout August and into September 2007. Though good for crops, the rains swelled rivers from the West African Atlantic coastline to the Horn of Africa abutting the Indian Ocean. As of September 17, the floods had impacted more than a million people across 17 countries, reported BBC News. [ http://news.bbc.co.uk/2/hi/africa/6998651.stm ] Among the countries affected by flooding were Senegal and Mauritania. The border between the two countries is defined by the Senegal River, which was flooded on September 16, when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured the top image. The lower image shows the river on July 23, 2007, before the steady rains started. These false-color images were made with a combination of visible and infrared light so that water is black or, when colored by mud, blue. The Senegal River painted a thin blue line across the sparsely vegetated, tan-pink landscape on July 23. By September, floods pooled on either side of the river. The river's tributaries in Mauritania were swollen, as was the Senegal River near its mouth. Additional proof of recent rain can be seen in the changing color of the surrounding land, which was colored green with new plants in September. A harbinger of the coming rains, turquoise and white clouds cover the southern half of the scene on July 23. NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC, which provides daily images of West Africa. [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?NAfrica_2_02/2007259 ]
Floods in West Africa
Title Floods in West Africa
Description The season's rain came late to parts of the African Sahel, but the tardy downpour was heavy and steady throughout August and into September 2007. Though good for crops, the rains swelled rivers from the West African Atlantic coastline to the Horn of Africa abutting the Indian Ocean. As of September 17, the floods had impacted more than a million people across 17 countries, reported BBC News. [ http://news.bbc.co.uk/2/hi/africa/6998651.stm ] Among the countries affected by flooding were Senegal and Mauritania. The border between the two countries is defined by the Senegal River, which was flooded on September 16, when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured the top image. The lower image shows the river on July 23, 2007, before the steady rains started. These false-color images were made with a combination of visible and infrared light so that water is black or, when colored by mud, blue. The Senegal River painted a thin blue line across the sparsely vegetated, tan-pink landscape on July 23. By September, floods pooled on either side of the river. The river's tributaries in Mauritania were swollen, as was the Senegal River near its mouth. Additional proof of recent rain can be seen in the changing color of the surrounding land, which was colored green with new plants in September. A harbinger of the coming rains, turquoise and white clouds cover the southern half of the scene on July 23. NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC, which provides daily images of West Africa. [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?NAfrica_2_02/2007259 ]
Floods in West Africa
Title Floods in West Africa
Description Sandwiched between the vast Sahara Desert of northern Africa and the equatorial forest of central Africa is the semi-arid, but fertile Sahel grassland. One of Africa's most significant crop areas, the Sahel swings between frequent drought and frequent floods. In September 2007, floods dominated. Unusually heavy and persistent rains hammered much of the Sahel, swelling rivers from Senegal on the Atlantic coast to Kenya on the Indian Ocean coast. As many as 17 countries across the Sahel were flooded, affecting more than a million people, reported BBC News [ http://news.bbc.co.uk/2/hi/africa/6994995.stm#anchor ] on September 17. The Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) flying on NASA's Aqua [ http://aqua.nasa.gov/ ] satellite captured the top image of floods in Nigeria on September 14, 2007. The lower image, taken by Aqua MODIS on May 25, 2007, shows the region under normal conditions and is provided here for reference. On September 14, both the Niger River and its tributary, the Benue River, were running over their banks. Pools of water, dark blue to black in this false-color image, line the swollen rivers. The large image reveals that the floods extend along the full length of both rivers. Smaller tributaries are also notably flooded in the large image. The combination of infrared and visible light used in this image gives clouds a pale blue tint. Plant-covered land is bright green, and bare earth is tan. A photo-like, [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?NAfrica_3_04/2007257/NAfrica_3_04.2007257.aqua ] true-color version of the image is available from the MODIS Rapid Response System, which provides daily images [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?NAfrica_3_04/2007257 ] of Nigeria. The floods took a heavy toll on Nigeria. As of September 14, 41 people had died in floods in northern and central Nigeria, reported Agence France-Presse. [ http://www.reliefweb.int/rw/RWB.NSF/db900SID/TBRL-772N8M?OpenDocument&rc=1&emid=FL-2007-000123-NGA ] NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC.
Floods in West Africa
Title Floods in West Africa
Description Sandwiched between the vast Sahara Desert of northern Africa and the equatorial forest of central Africa is the semi-arid, but fertile Sahel grassland. One of Africa's most significant crop areas, the Sahel swings between frequent drought and frequent floods. In September 2007, floods dominated. Unusually heavy and persistent rains hammered much of the Sahel, swelling rivers from Senegal on the Atlantic coast to Kenya on the Indian Ocean coast. As many as 17 countries across the Sahel were flooded, affecting more than a million people, reported BBC News [ http://news.bbc.co.uk/2/hi/africa/6994995.stm#anchor ] on September 17. The Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) flying on NASA's Aqua [ http://aqua.nasa.gov/ ] satellite captured the top image of floods in Nigeria on September 14, 2007. The lower image, taken by Aqua MODIS on May 25, 2007, shows the region under normal conditions and is provided here for reference. On September 14, both the Niger River and its tributary, the Benue River, were running over their banks. Pools of water, dark blue to black in this false-color image, line the swollen rivers. The large image reveals that the floods extend along the full length of both rivers. Smaller tributaries are also notably flooded in the large image. The combination of infrared and visible light used in this image gives clouds a pale blue tint. Plant-covered land is bright green, and bare earth is tan. A photo-like, [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?NAfrica_3_04/2007257/NAfrica_3_04.2007257.aqua ] true-color version of the image is available from the MODIS Rapid Response System, which provides daily images [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?NAfrica_3_04/2007257 ] of Nigeria. The floods took a heavy toll on Nigeria. As of September 14, 41 people had died in floods in northern and central Nigeria, reported Agence France-Presse. [ http://www.reliefweb.int/rw/RWB.NSF/db900SID/TBRL-772N8M?OpenDocument&rc=1&emid=FL-2007-000123-NGA ] NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC.
Floods in Western Australia
Title Floods in Western Australia
Description Although eight days had passed since Cyclone Emma drenched northwestern Australia, flooding was more dramatic than it had been immediately after the storm came ashore on March 1, 2006. By March 8, top image, upstream floodwater had swollen the web of rivers in the center of the image and spread across the dry landscape. Additional flooding is apparent near the shore along the top of the image, and the cloud of bright blue offshore indicates that mud-laden water is draining into the Indian Ocean. The Australian Broadcasting Corporation reported that the floods had stranded or killed cattle in the rural region.Daily images [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?Australia1/ ] of northwestern Australia are available from the MODIS Rapid Response Team. NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC.
Floods in Western Australia
Title Floods in Western Australia
Description Although eight days had passed since Cyclone Emma drenched northwestern Australia, flooding was more dramatic than it had been immediately after the storm came ashore on March 1, 2006. By March 8, top image, upstream floodwater had swollen the web of rivers in the center of the image and spread across the dry landscape. Additional flooding is apparent near the shore along the top of the image, and the cloud of bright blue offshore indicates that mud-laden water is draining into the Indian Ocean. The Australian Broadcasting Corporation reported that the floods had stranded or killed cattle in the rural region.Daily images [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?Australia1/ ] of northwestern Australia are available from the MODIS Rapid Response Team. NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC.
Floods in Western Australia
Title Floods in Western Australia
Description The largest flood on record on Australia's Murchison River was expected to peak at the river's mouth on March 16, 2006, reported the Australian Broadcasting Corporation [ http://www.abc.net.au/news/newsitems/200603/s1592969.htm ]. The Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Aqua [ http://aqua.nasa.gov/ ] satellite captured the top image on the afternoon of March 16. On the right side of the image, the upper reaches of the Murchison River are clearly flooded with a wide blue band expanding out from the river's normal banks. As it enters Kalbarri National Park, the river winds through deep gorges that prevented it from spreading out. Only when it reaches the coast is the river wide again. A bright blue fan of sediment pours from the mouth of the river where mud-laden flood water is draining into the Indian Ocean. The river overflowed after Cyclone Emma inundated the basin with heavy rain on March 1. The excess water took 15 days to drain to the ocean. The floods near the shore threatened the city of Kalbarri, which sits just south of the river. The floods may also have caused damage to Kalbarri National Park, which is centered around the river and the 80 kilometers of gorges it has cut in the red rock. Even without superimposed borders, the park's southern boundary is clearly evident in this image. To the south of the river, a stark line separates the green park from the tan and pink land outside the park. The park's western border is the Indian Ocean. The park's northern and eastern borders are not visible. The MODIS Rapid Response System provides daily images [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?Australia4/2006075 ] of Western Australia. NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC.
Floods in Western Australia
Title Floods in Western Australia
Description The Murchison River of central Western Australia was still grossly swollen on March 12, 2006, when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured the top image. The flooding started when Cyclone Emma dumped heavy rain over the river basin on March 1. Since then, the glut of flood water has steadily made its way downstream, making the river bulge as it went. On March 9, the Australian Broadcasting Corporation reported that the river was at its highest level on record, expanding to more than ten kilometers wide in places. In the days following March 12, the flood water was expected to drain into the Indian Ocean through Kalbarri National Park and the city of Kalbarri. In the image, the flood-widened river is a ribbon of blue, particularly in the southwestern reaches of the river. In these areas, the river had been a barely discernable blue line on February 20, lower image, before the cyclone hit. The large images have a resolution of 500 meters per pixel. They are available in additional resolutions [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?Australia4/2006071/Australia4.2006071.terra.721 ], including MODIS' maximum resolution of 250 meters per pixel, from the MODIS Rapid Response Team. NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC.
Floods in Western Australia
Title Floods in Western Australia
Description The Murchison River of central Western Australia was still grossly swollen on March 12, 2006, when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured the top image. The flooding started when Cyclone Emma dumped heavy rain over the river basin on March 1. Since then, the glut of flood water has steadily made its way downstream, making the river bulge as it went. On March 9, the Australian Broadcasting Corporation reported that the river was at its highest level on record, expanding to more than ten kilometers wide in places. In the days following March 12, the flood water was expected to drain into the Indian Ocean through Kalbarri National Park and the city of Kalbarri. In the image, the flood-widened river is a ribbon of blue, particularly in the southwestern reaches of the river. In these areas, the river had been a barely discernable blue line on February 20, lower image, before the cyclone hit. The large images have a resolution of 500 meters per pixel. They are available in additional resolutions [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?Australia4/2006071/Australia4.2006071.terra.721 ], including MODIS' maximum resolution of 250 meters per pixel, from the MODIS Rapid Response Team. NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC.
Gravity Waves Ripple over Ma …
Title Gravity Waves Ripple over Marine Stratocumulus Clouds
Description In this natural-color image from the Multi-angle Imaging SpectroRadiometer (MISR), a fingerprint-like gravity wave feature occurs over a deck of marine stratocumulus clouds. Similar to the ripples that occur when a pebble is thrown into a still pond, such "gravity waves" sometimes appear when the relatively stable and stratified air masses associated with stratocumulus cloud layers are disturbed by a vertical trigger from the underlying terrain, or by a thunderstorm updraft or some other vertical wind shear. The stratocumulus cellular clouds that underlie the wave feature are associated with sinking air that is strongly cooled at the level of the cloud-tops—such clouds are common over mid-latitude oceans when the air is unperturbed by cyclonic or frontal activity. This image is centered over the Indian Ocean (at about 38.9° South, 80.6° East), and was acquired on October 29, 2003. The Multi-angle Imaging SpectroRadiometer observes the daylit Earth continuously and every 9 days views the entire globe between 82° north and 82° south latitude. The MISR Browse Image Viewer [ http://earthobservatory.nasa.gov/cgi-bin/redirect?http://eosweb.larc.nasa.gov/MISRBR/ ] provides access to low-resolution true-color versions of these images. These data products were generated from a portion of the imagery acquired during Terra orbit 20545. The image covers an area of 245 kilometers x 378 kilometers, and uses data from blocks 121 to 122 within World Reference System-2 path 134. Image courtesy NASA/GSFC/LaRC/JPL, MISR Team. [ http://earthobservatory.nasa.gov/cgi-bin/redirect?http://www-misr.jpl.nasa.gov/ ] Text by Clare Averill (Raytheon/JPL).
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