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Fires in Kasai Region, Democ …
Widespread agricultural burn …
7/24/09
Description Widespread agricultural burning is common in the dry season in Africa. As the rainy season migrates north and south across the continent each year, a wave of widespread fires precedes its arrival. This image of the Kasai region of Democratic Republic of the Congo shows hundreds of active fires (marked in red) burning on July 20, 2009. The tan and light green landscapes are likely a mixture of agricultural land, grassland, and savanna, while the deep green areas between the Sankuru and Kasai Rivers are tropical forest. Although many of the fires that occur each year during Africa's dry season occur in landscapes where people have been living and farming for generations, the growing population is also using fire to clear new agricultural land out of Africa's tropical forests. Many of the fires in the image have only small smoke plumes, and some appear to be making no smoke. Dry grass or crop residue would generate less smoke than live or recently cut trees. The large amount of smoke coming from the fires along the margins of the forests, however, may indicate that forest is being cleared. The large version of the image shows fires are burning across a wider area, including parts of Angola (southwest), Zambia (southeast), and Tanzania (east). The image was captured by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Aqua satellite. Image credit: Jeff Schmaltz, NASA's MODIS Rapid Response Team Text credit: Rebecca Lindsey, NASA's Earth Observatory
Date 7/24/09
Floods in Southern Africa
Title Floods in Southern Africa
Description A black web of water surrounds the Zambezi River 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 February 10, 2007. Mozambique was experiencing its worst floods in six years when the Zambezi flowed over its banks in January and February 2007, reported the United Nations Office for the Coordination of Humanitarian Affairs (OCHA [ http://www.reliefweb.int/rw/RWB.NSF/db900SID/YZHG-6YCQR4?OpenDocument&rc=1&emid=FL-2007-000011-ZMB ]). As of February 12, an estimated 29 people had died and 60,000 had been evacuated from the river's banks. Early and heavy rains fell over the entire Zambezi Basin, pushing the Zambezi and many of its tributaries into flood stage. The floods are likely to worsen as the 2,574-kilometer-long river receives water from its swollen tributaries in Angola, Namibia, Zambia, and Malawi. Releases from the massive Cahora Bassa Reservoir, [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=14110 ] which is reaching its capacity, are also expected to make flooding worse along the lower Zambezi. These images show the lower Zambezi where it meets the Shire River flowing south from Malawi, one of the most severely affected regions in Mozambique. The top image provides a remarkably cloud-free view of the floods, while the lower image, taken on December 31, 2006, shows the region before the rains started in January. The images were made with a combination of infrared and visible light to highlight the presence of water on the ground. Water is black or dark blue, while plant-covered land is green. Bare earth is tan and pink, and clouds are pale blue and white. Fires are outlined in red. Images such as these and photo-like, true-color images are provided by the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?FAS_SMozambique/2007041 ] on a daily basis. 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 A black web of water surrounds the Zambezi River 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 February 10, 2007. Mozambique was experiencing its worst floods in six years when the Zambezi flowed over its banks in January and February 2007, reported the United Nations Office for the Coordination of Humanitarian Affairs (OCHA [ http://www.reliefweb.int/rw/RWB.NSF/db900SID/YZHG-6YCQR4?OpenDocument&rc=1&emid=FL-2007-000011-ZMB ]). As of February 12, an estimated 29 people had died and 60,000 had been evacuated from the river's banks. Early and heavy rains fell over the entire Zambezi Basin, pushing the Zambezi and many of its tributaries into flood stage. The floods are likely to worsen as the 2,574-kilometer-long river receives water from its swollen tributaries in Angola, Namibia, Zambia, and Malawi. Releases from the massive Cahora Bassa Reservoir, [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=14110 ] which is reaching its capacity, are also expected to make flooding worse along the lower Zambezi. These images show the lower Zambezi where it meets the Shire River flowing south from Malawi, one of the most severely affected regions in Mozambique. The top image provides a remarkably cloud-free view of the floods, while the lower image, taken on December 31, 2006, shows the region before the rains started in January. The images were made with a combination of infrared and visible light to highlight the presence of water on the ground. Water is black or dark blue, while plant-covered land is green. Bare earth is tan and pink, and clouds are pale blue and white. Fires are outlined in red. Images such as these and photo-like, true-color images are provided by the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov/subsets/?FAS_SMozambique/2007041 ] on a daily basis. NASA image courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC.
Dust Plumes off Namibia
Title Dust Plumes off Namibia
Description Many plumes of desert dust (tan pixels) were streaming westward off the coasts of Angola (top) and Namibia (bottom) in southwestern Africa on June 9, 2004. Notice the dark green color of the ocean beneath the dust plumes, indicating the presence phytoplankton thriving in the surface waters there. The frequent influx of iron-rich desert dust settling into the ocean here?together with cold, nutrient-rich waters upwelling from the depths?make these some of the most biologically productive ocean waters on Earth. This true-color image was acquired on June 9, 2004, by the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard NASA?s Terra satellite. The high-resolution image available here is 500 meters per pixel, but the image is also available at additional resolutions. [ http://rapidfire.sci.gsfc.nasa.gov/gallery/?2004161-0609/Namibia.A2004161.0930 ] Image courtesy Jacques Descloitres, MODIS Rapid Response Team, NASA-Goddard Space Flight Center
Fire and Smoke in Angola
Title Fire and Smoke in Angola
Description In August and September, accumulated smoke and smog from seasonal agricultural burning and charcoal production in southern Africa gets "recycled"across many southern Africa countries, including Angola, Democratic Republic of Congo, Zimbabwe, and Zambia. At that time of year, a semi-permanent area of high atmospheric pressure takes up residence over that part of the continent, and the air re-circulates in a counterclockwise spin around the high. Air does escape from this spin-cycle at times and spreads out over the Indian Ocean to the east, or the Atlantic Ocean to the west, as it does in this Moderate Resolution Imaging Spectroradiometer (MODIS) image captured by NASA's Terra satellite on August 28, 2004. At right are of parts of (top to bottom) Gabon, Congo, Democratic Republic of Congo, and Angola. Haze spreads out over the Atlantic, giving the clouds a dirty appearance. Contrast their color with the brightness of the cloud over Angola, at the bottom of the image to the right of center. MODIS also detected numerous fires, which have been marked in red. NASA scientists studied this atmospheric phenomenon in 2000 in a field campaign called SAFARI. To learn more, read "Red Alert! 'Recycled Ozone' Adds to Health Hazards in Zambia" [ http://earthobservatory.nasa.gov/Newsroom/NasaNews/2001/200112106304.html ] in the Earth Observatory's NASA News Archive. NASA image by Jesse Allen, based on data from the MODIS Rapid Response Team, NASA-GSFC
Fire Season in Central and S …
Title Fire Season in Central and Southern Africa
Description Images such as this one from the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Aqua satellite captured on July 18, 2005, make it clear why scientists often call Africa "the burning continent." Africans have used fire for thousands of years to manage their agricultural lands, and the area of the continent experiencing widespread fire shifts with the seasons. This image shows the area west and south of Lake Tanganyika (upper right). It shows parts of Democratic Republic of Congo (top and center), Zambia (lower right), and Angola (lower left). Active fires detected by MODIS are marked with red dots. NASA image created by Jesse Allen, Earth Observatory, using data obtained from the Goddard Earth Sciences DAAC.
Fire Season in Central and S …
Title Fire Season in Central and Southern Africa
Description The annual southern Africa burning season is fully underway in late July 2005. Each year, farmers and herders set fire to fields and grasslands to create soil-fertilizing ash, stop woody shrubs from encroaching on grasslands, and stimulate new plant growth. For those who don't live or travel there, it can be hard to imagine a continent on fire from coast to coast for several months a year. This image from the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Aqua satellite shows the immense spatial scale of the seasonal burning in Southern Africa. Thousands of active fires were detected by MODIS across Angola (left), Democratic Republic of Congo (top), and Zambia (right), their locations are marked with red dots. Though these fires are not necessarily immediately hazardous, such large-scale burning can have a strong impact on weather, climate, human health, and natural resources. NASA image created by Jesse Allen, Earth Observatory, using data obtained courtesy of the MODIS Rapid Response team.
Fires in Central Africa
Title Fires in Central Africa
Description After almost two weeks of agricultural burning across Democratic Republic of Congo and Angola in west-central Africa, a pall of smoke now hangs over the region, nearly hiding the surface from view in this Moderate Resolution Imaging Spectroradiometer (MODIS) image from May 17, 2004. Active fire detections made by MODIS are marked in yellow. Image by Earth Observatory staff, based on data from the MODIS Rapid Response Team, NASA-GSFC
Fires in Central Africa
Title Fires in Central Africa
Description In Africa south of the equator, fires are ubiquitous during the annual dry season. The exact length and timing of the dry season vary in different locations, but it generally falls between May and October. During that time, people use fire to clear brush and crop stubble, to control the growth of undesirable plants in crop or grazing areas, and to drive grazing animals from one pasture area to another. This image shows early dry-season burning across a large swath of central Africa south of the equator on May 28, 2007. The image was captured by the Moderate Resolution Imaging Spectroradiometer (MODIS) [ http://modis.gsfc.nasa.gov ] on NASA's Aqua [ http://aqua.nasa.gov ] satellite, and shows places the sensor detected active fires marked with red dots. Hundreds of fires dot the tropical savannas (ecosystems dominated by grasses and scattered trees and shrubs) of Angola, Democratic Republic of Congo, and Zambia. Although these fires are not necessarily immediately hazardous, such large-scale burning can have a strong impact on weather, climate, human health, and natural resources. For example, the fires create large amounts of ozone and other air pollutants, and the too-frequent use of fire combined with other pressures such as overgrazing may degrade the soil and prevent some plant species from regenerating. You can download a 250-meter-resolution Central Africa fires KMZ file [ http://earthobservatory.nasa.gov/NaturalHazards/Archive/May2007/cafrica_amo_2007148.kmz ] for use with Google Earth. [ http://earth.google.com/l ] NASA image created by Jesse Allen, using data provided courtesy of the MODIS Rapid Response [ http://rapidfire.sci.gsfc.nasa.gov/ ] team.
Fires in Central and Souther …
Title Fires in Central and Southern Africa
Description Hundreds of fires were burning in Angola (left) and Democratic Republic of Congo (upper right) on May 30, 2006, when the Moderate Resolution Imaging Spectroradiometer (MODIS) [ http://modis.gsfc.nasa.gov ] on NASA's Aqua [ http://aqua.nasa.gov ] satellite captured this image. MODIS also detected fires (locations marked in red) in Zambia (bottom right). Widespread agricultural burning (clearing old vegetation or brush from pasture and croplands) occurs in the dry season in this part of Africa. The start and stop date of the dry and rainy seasons varies, in northern Angola, for example, the dry season usually begins in May and lasts until September or October. Fires are a well-established, and in many cases natural, part of the savanna landscapes of Africa south of the Sahara. Although it is not necessarily immediately hazardous, such large-scale burning can have a strong impact on weather, climate, human health, and natural resources. NASA image created by Jesse Allen, Earth Observatory, using data provided courtesy of the MODIS Rapid Response [ http://rapidfire.sci.gsfc.nasa.gov/ ] team.
Fires in Central and Souther …
Title Fires in Central and Southern Africa
Description In central Africa, hundreds, possibly thousands of fires were burning in Angola, Democratic Republic of Congo, and Zambia on June 10, 2006. This image of the area from the Moderate Resolution Imaging Spectroradiometer (MODIS) [ http://modis.gsfc.nasa.gov ] on NASA's Aqua [ http://aqua.nasa.gov ] satellite shows locations where the sensor detected active fires marked in red. Widespread agricultural burning such as this is common in Africa, and it is not necessarily immediately hazardous. Nevertheless, the fires and smoke can have a significant impact on climate, human health, and natural resources. NASA images created by Jesse Allen, Earth Observatory, using data obtained from the Goddard Earth Sciences DAAC. [ http://rapidfire.sci.gsfc.nasa.gov/ ]
Fires in Central and Souther …
Title Fires in Central and Southern Africa
Description On July 10, 2006, thousands of fires were burning across the savannas of central and southern Africa when the Moderate Resolution Imaging Spectroradiometer (MODIS) [ http://modis.gsfc.nasa.gov ] on NASA's Aqua [ http://aqua.nasa.gov ] satellite passed overhead. Each place where MODIS detected an actively burning fire has been marked in red in this scene, which spans parts of Angola, Democratic Republic of Congo, and Zambia. Some of the fires had distinct smoke plumes, which winds were blowing northwest. At upper left, the skies are so smoky that the features of the landscape below are indistinct. Even the clouds in the scene at left and upper right appear dirty. No landscape on Earth experiences such extensive burning as the savannas of Africa. For thousands of years, people in Africa have used fire in their agricultural activities. They burn grassland to clear it for crops, to keep woody plants and trees from invading pasture areas, and to renew pasture grass. People have also used fire to drive game and facilitate hunting. Although fire has been integral to the ecosystems of southern Africa for millennia, increasing populations and demands on the landscape may change the frequency and intensity of burning. Such widespread burning, while not necessarily immediately hazardous, can have a strong impact on climate, human health, and natural resources. NASA image created by Jesse Allen, Earth Observatory, using data provided courtesy of the MODIS Rapid Response [ http://rapidfire.sci.gsfc.nasa.gov/ ] team.
Flooding on the Zambezi Rive …
Title Flooding on the Zambezi River
Description Nearly every April, Africa's Zambezi River swells with seasonal rain, spreading across its broad flood plain in Angola and Namibia. Some of the people most seriously affected by the regular floods live in Namibia's Caprivi Strip. As of April 11, 2006, seven settlements in the flood-prone region were surrounded by water, reported the New Era, a Namibian newspaper. The region was clearly flooded in a false-color satellite image taken on April 11 (top), by the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Aqua [ http://aqua.nasa.gov/ ] satellite. In this image, water is black and dark blue, clouds are pale blue, plant-covered land is green, and bare earth is tan. In the three and a half weeks that passed between the time the top image was acquired and the time the lower image was acquired, the eastern tip of the Caprivi Strip turned into a vast shallow lake. Though the river was still rising, the floods were nowhere near the record-setting levels seen in 2004 [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=12081 ]. NASA image created by Jesse Allen, Earth Observatory, using data obtained courtesy of the MODIS Rapid Response [ http://rapidfire.sci.gsfc.nasa.gov/ ] team and the Goddard Earth Sciences DAAC. [ http://daac.gsfc.nasa.gov/ ]
Flooding on the Zambezi Rive …
Title Flooding on the Zambezi River
Description Nearly every April, Africa's Zambezi River swells with seasonal rain, spreading across its broad flood plain in Angola and Namibia. Some of the people most seriously affected by the regular floods live in Namibia's Caprivi Strip. As of April 11, 2006, seven settlements in the flood-prone region were surrounded by water, reported the New Era, a Namibian newspaper. The region was clearly flooded in a false-color satellite image taken on April 11 (top), by the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Aqua [ http://aqua.nasa.gov/ ] satellite. In this image, water is black and dark blue, clouds are pale blue, plant-covered land is green, and bare earth is tan. In the three and a half weeks that passed between the time the top image was acquired and the time the lower image was acquired, the eastern tip of the Caprivi Strip turned into a vast shallow lake. Though the river was still rising, the floods were nowhere near the record-setting levels seen in 2004 [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=12081 ]. NASA image created by Jesse Allen, Earth Observatory, using data obtained courtesy of the MODIS Rapid Response [ http://rapidfire.sci.gsfc.nasa.gov/ ] team and the Goddard Earth Sciences DAAC. [ http://daac.gsfc.nasa.gov/ ]
Flooding on the Zambezi Rive …
nasa, nasanaturalhazards
* eoimages.gsfc.nasa.gov/ima …
zambezi_amo_2006101
mediatype IMAGE
mediatype image
date 2006-04-11
creator NASA -- NASA Image Of The Day
identifier zambezi_amo_2006101
Floods in Southern Africa: N …
nasa, nasanaturalhazards
* eoimages.gsfc.nasa.gov/ima …
Mozambique_TMO_2007041
mediatype IMAGE
mediatype image
date 2007-01-10
creator NASA -- NASA Image Of The Day
identifier Mozambique_TMO_2007041
Color infrared Earth observa …
johnsonspacecentermediaarchi …
Earth observations taken dur …
STS094-703-096
mediatype IMAGE
mediatype image
date 1997-07-12
creator NASA
identifier STS094-703-096
Earth observations from STS- …
johnsonspacecentermediaarchi …
Photographic documentation o …
STS062-86-045
mediatype IMAGE
mediatype image
date 1994-03-08
creator NASA
identifier STS062-86-045
Color infrared Earth observa …
johnsonspacecentermediaarchi …
Earth observations taken dur …
STS094-703-090
mediatype IMAGE
mediatype image
date 1997-07-12
creator NASA
identifier STS094-703-090
Historic Tropical Cyclone Tr …
nasa, nasaimageofthedaygalle …
Like streamers of splattered …
tropical_cyclone_map
mediatype IMAGE
mediatype image
date 2006
creator NASA -- www.globalwarmingart.com/wiki/Image:Tropical_Storm_Map_png Image by Robert A. Rohde, www.globalwarmingart.com/wiki/ Global Warming Art.
identifier tropical_cyclone_map
Fires in Central and Souther …
nasa, nasanaturalhazards
In central Africa, hundreds, …
angola_amo_2006161
mediatype IMAGE
mediatype image
date 2006-06-10
creator NASA -- NASA Image Of The Day
identifier angola_amo_2006161
Fires in Central Africa: Nat …
nasa, nasanaturalhazards
After almost two weeks of ag …
terra_cafrica_17may04
mediatype IMAGE
mediatype image
date 2004-05-17
creator NASA -- NASA Image Of The Day
identifier terra_cafrica_17may04
Fires in Central and Souther …
nasa, nasanaturalhazards
On July 10, 2006, thousands …
angola_amo_2006191
mediatype IMAGE
mediatype image
date 2006-07-10
creator NASA -- NASA Image Of The Day
identifier angola_amo_2006191
Fire Season in Central and S …
nasa, nasanaturalhazards
The annual southern Africa b …
cafrica_amo_23jul05
mediatype IMAGE
mediatype image
date July 23, 2005
creator NASA -- NASA Image Of The Day
identifier cafrica_amo_23jul05
Fire and Smoke in Angola: Na …
nasa, nasanaturalhazards
In August and September, acc …
terra_africa_28aug04
mediatype IMAGE
mediatype image
date 2004-08-28
creator NASA -- NASA Image Of The Day
identifier terra_africa_28aug04
Intense Seasonal Floods in S …
nasa, nasanaturalhazards
Heavier-than-normal rainfall …
SouthernAfrica_TRM_2008025
mediatype IMAGE
mediatype image
date 2008-01-25
creator NASA -- NASA Image Of The Day
identifier SouthernAfrica_TRM_2008025
Fire Season in Central and S …
nasa, nasanaturalhazards
Images such as this one from …
safrica_amo_18jul05
mediatype IMAGE
mediatype image
date July 18, 2005
creator NASA -- NASA Image Of The Day
identifier safrica_amo_18jul05
Fires in Central and Souther …
nasa, nasanaturalhazards
Hundreds of fires were burni …
angola_amo_2006150
mediatype IMAGE
mediatype image
date 2006-05-30
creator NASA -- NASA Image Of The Day
identifier angola_amo_2006150
Airborne Particulates over S …
PIA02640
Sol (our sun)
Multi-angle Imaging SpectroR …
Title Airborne Particulates over Southern Africa
Original Caption Released with Image This map shows the abundance of airborne particulates, or aerosols, over Southern Africa during the period August 14 - September 29, 2000. Low particle concentrations are shown in shades of blue, and high concentrations in shades of red. The results were generated from MISR imagery acquired over this time period, and processed using MISR's automated software system. The approach for deriving aerosol amount makes use of the variation of scene brightness and contrast as a function of observation angle. Black areas over the land area correspond to places where a result was not obtained, for example, due to the presence of clouds. Extensive burning of grass and shrubland for land management and agriculture comprises a principal source of these aerosols. Vegetation availability increases northward, hence the greater abundance of haze and smoke in Angola and southern Zaire. The lower aerosol abundance around Lesotho and southeastern South Africa is consistent with the higher terrain elevations near the Drakensberg Mountains. 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.
Seasonal Surface Changes in …
PIA04320
Sol (our sun)
Multi-angle Imaging SpectroR …
Title Seasonal Surface Changes in Namibia and Central Angola
Original Caption Released with Image Brightness variations in the terrain along a portion of southwestern Africa are displayed in these views from the Multi-angle Imaging SpectroRadiometer (MISR). The panels portray an area that includes Namibia's Skeleton Coast and Etosha National Park as well as Angola's Cuando Cubango. The top panels were acquired on March 6, 2001, during the region's wet season, and the bottom panels were acquired on September 1, 2002, during the dry season. Corresponding changes in the abundance of vegetation are apparent. The images on the left are natural color (red, green, blue) images from MISR's vertical-viewing (nadir) camera. The images on the right represent one of MISR's derived surface products. The radiance (light intensity) in each pixel of the so-called "top-of-atmosphere" images on the left includes light that is reflected by the Earth's surface in addition to light that is transmitted and reflected by the atmosphere. The amount of radiation reflected by the surface into all upward directions, as opposed to any single direction, is important when studying Earth's energy budget. A quantity called the surface "directional hemispherical reflectance" (DHR), sometimes called the "black-sky albedo", captures this information, and is depicted in the images on the right. MISR's multi-angle views lead to more accurate estimates of the amount of radiation reflected into all directions than can be obtained as a result of looking at a single (e.g., vertically downward) view angle. Furthermore, to generate this surface product accurately, it is necessary to compensate for the effects of the intervening atmosphere, and MISR provides the ability to characterize and account for scattering of light by airborne particulates (aerosols). The DHR is called a hemispherical reflectance because it measures the amount of radiation reflected into all upward directions, and which therefore traverses an imaginary hemisphere situated above each surface point. The "directional" part of the name describes the illumination geometry, and indicates that in the absence of an intervening atmosphere, light from the Sun illuminates the surface from a single direction (that is, there is no diffuse skylight, hence the "black-sky" terminology). The DHR is retrieved over land surfaces in each of MISR's four wavelength bands, and the images on the right are red, green, blue spectral composites. Regions where DHR could not be derived, either due to an inability to retrieve the necessary atmospheric characteristics or due to the presence of clouds, are shown in dark gray. 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 6466 and 14388. The panels cover an area of about 380 kilometers x 760 kilometers, and utilize data from blocks 102 to 107 within World Reference, System-2 path 181. 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.
View of unique drainage patt …
Title View of unique drainage patterns in southwestern Africa
Description An oblique view of unique drainage patterns in southwestern Africa in the Rio Cuando area of Angola and South-West Africa, as photographed from the Apollo spacecraft in Earth orbit during the joint U.S.-USSR Apollo Soyuz Test Project (ASTP) mission. The picture was taken at an altitude of 223 kilometers (138 statute miles).
Date Taken 1975-07-18
Sand dunes, Mocamedes Desert …
Title Sand dunes, Mocamedes Desert, Angola, Africa
Description These lines of sand dunes in the Mocamedes Desert, Angola, Africa (16.0S, 12.0E), make a festoon pattern as they curve inland from the coast. Beach sand is blown inland by very strong southerly winds giving rise to lines of dunes, the crests of which have a ribbed appearance. The reason for the inland curve of the winds is not known but the effect can bve observed at the mouths of most of the major valleys along the Namib coast to the south.
Date Taken 1990-12-10
Panoramic Okavango Swamp, Bo …
Title Panoramic Okavango Swamp, Botswana and Fires in Angola, Africa
Description In this panoramic view of the Okavango Swamp, Botswana, (19.0S, 22.0E), the Okavango River, seen in sunglint, flows into a topographic trough to form an inland delta. Water, trapped in the meandering delta distributaries is evaporated or transpired by vegetation. In Angola to the north, the many fires of the seasonal burning of savannah vegetation for land clearing, in preparation for agriculture, has filled the atmosphere with haze and smoke.
Date Taken 1991-08-11
Stratocumulus Clouds, South …
Title Stratocumulus Clouds, South Atlantic Ocean
Description These unusual Stratocumulus Clouds over the South Atlantic Ocean (5.0S, 2.5E) were the northern extent of an area of Bernard Cell convection and were spotted approximately 600 miles west of Angola.
Date Taken 1991-08-11
Okavango Delta, Botswana as …
Title Okavango Delta, Botswana as seen from STS-66 shuttle Atlantis
Description This November 1994 view looking south-southeast shows clouds over the Okavango Delta area of northern Botswana. The Okavango is one of the wilder, less spoiled regions of Africa. The Okavango River (lower left of view) brings water from the high, wet plateaus of Angola into the Kalahari Dessert, and enormous inland basin. As a result of a series of small faults (upper center of the view) related to the African Rift System, the river is dammed up in the form of a swampy inland delta. The visual patterns of the area are strongly linear: straight sand dunes occur in many places and can be seen across the bottom portion of the photograph. Numerous brush-fire scars produce a complex, straight-edged pattern over much of the lower portion of this view. Lake Ngami (upper right of view) was once permanently full as late as the middle 1800s. Changes in the climate of the area over the last 100 years has changed the size and shape of the inland delta.
Date Taken 1994-11-14
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