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Mount St. Helens Before, During, and After (WMS)

(Complete Item Description)

Abstract:: Mount St. Helens erupted on May 18, 1980, devastating more than 150 square miles of forest in southwestern Washington state. This animation shows Landsat images of the Mount St. Helens area in 1973, 1983, and 2000, illustrating the destruction and regrowth of the forest. The 1983 image clearly shows the new crater on the northern slope where the eruption occurred, the rivers and lakes covered with ash, and the regions of deforestation. The 2000 image, taken twenty years after the eruption, still shows the changed crater, but much of the devastated area is covered by new vegetation growth.

Subject:: Science and Technology
Grade Level:: Secondary, Post-secondary
SubTopics:: Plants and Forests
Collection:: NASA GSFC Scientific Visualization Studio

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Rondonia Deforestation (WMS)

(Complete Item Description)

Abstract:: Throughout much of the 1980s, deforestation in Brazil eliminated more than 15,000 square kilometers (9000 square miles) of forest per year. Data gathered by several satellites in the Landsat series of spacecraft shows enormous tracts of forest disappearing in Rondonia, Brazil from 1975 through 2001. The human phenomenon of deforestation starts, especially in the dense tropical forests of Brazil, when systematic cutting of a road opens new territory to potential deforestation by penetrating into new areas. Clearing of vegetation along the sides of those roads then tends to fan out to create a pattern akin to a fish skeleton. As new paths appear in the woods, more areas become vulnerable. Finally, the spaces between the skeletal bones fall to defoliation.

Subject:: Science and Technology
Grade Level:: Secondary, Post-secondary
SubTopics:: Plants and Forests , Industrial and Agricultural Impacts
Collection:: NASA GSFC Scientific Visualization Studio

No Strings Attached

Urban Signatures: Evaporation (WMS)

(Complete Item Description)

Abstract:: Big cities influence the environment around them. For example, urban areas are typically warmer than their surroundings. Cities are strikingly visible in computer models that simulate the Earths land surface. This visualization shows evaporation rates predicted by the Land Information System (LIS) for a day in June 2001. Evaporation is lower in the cities because water tends to run off pavement and into drains, rather than being absorbed by soil and plants from which it later evaporates. Only part of the global computation is shown, focusing on the highly urbanized northeast corridor in the United States, including the cities of Boston, New York, Philadelphia, Baltimore, and Washington.

Subject:: Science and Technology
Grade Level:: Secondary, Post-secondary
Collection:: NASA GSFC Scientific Visualization Studio

No Strings Attached

Urban Signatures: Latent Heat Flux

(Complete Item Description)

Abstract:: Big cities influence the environment around them. For example, urban areas are typically warmer than their surroundings. Cities are strikingly visible in computer models that simulate the Earths land surface. This visualization shows latent heat flux predicted by the Land Information System (LIS) for a day in June 2001. Latent heat flux is lower in the cities because there is less evaporation there. Only part of the global computation is shown, focusing on the highly urbanized northeast corridor in the United States, including the cities of Boston, New York, Philadelphia, Baltimore, and Washington.

Subject:: Science and Technology
Grade Level:: Secondary, Post-secondary
Collection:: NASA GSFC Scientific Visualization Studio

No Strings Attached

Urban Signatures: Sensible Heat Flux (WMS)

(Complete Item Description)

Abstract:: Big cities influence the environment around them. For example, urban areas are typically warmer than their surroundings. Cities are strikingly visible in computer models that simulate the Earths land surface. This visualization shows sensible heat flux predicted by the Land Information System (LIS) for a day in June 2001. Sensible heat flux is higher in the cities--that is, they transfer more heat to the atmosphere--because the surface there is warmer than in the surroundings. Only part of the global computation is shown, focusing on the highly urbanized northeast corridor in the United States, including the cities of Boston, New York, Philadelphia, Baltimore, and Washington.

Subject:: Science and Technology
Grade Level:: Secondary, Post-secondary
Collection:: NASA GSFC Scientific Visualization Studio

No Strings Attached

Urban Signatures: Temperature (WMS)

(Complete Item Description)

Abstract:: Big cities influence the environment around them. For example, urban areas are typically warmer than their surroundings. Cities are strikingly visible in computer models that simulate the Earths land surface. This visualization shows average surface temperature predicted by the Land Information System (LIS) for a day in June 2001. Only part of the global computation is shown, focusing on the highly urbanized northeast corridor in the United States, including the cities of Boston, New York, Philadelphia, Baltimore, and Washington.

Subject:: Science and Technology
Grade Level:: Secondary, Post-secondary
Collection:: NASA GSFC Scientific Visualization Studio

No Strings Attached

Urban Signatures: Thermal Radiation (WMS)

(Complete Item Description)

Abstract:: Big cities influence the environment around them. For example, urban areas are typically warmer than their surroundings. Cities are strikingly visible in computer models that simulate the Earths land surface. This visualization shows outgoing thermal radiation predicted by the Land Information System (LIS) for a day in June 2001. Cities are warmer, so they emit more longwave (infrared) radiation. Only part of the global computation is shown, focusing on the highly urbanized northeast corridor in the United States, including the cities of Boston, New York, Philadelphia, Baltimore, and Washington.

Subject:: Science and Technology
Grade Level:: Secondary, Post-secondary
Collection:: NASA GSFC Scientific Visualization Studio

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Mount St. Helens Before, During, and After (WMS)

Rondonia Deforestation (WMS)

Urban Signatures: Evaporation (WMS)

Urban Signatures: Latent Heat Flux

Urban Signatures: Sensible Heat Flux (WMS)

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Browse: Keyword: Terrestrial Ecosystems

You searched for:

Refine Your Search

Mount St. Helens Before, During, and After (WMS)

Rondonia Deforestation (WMS)

Urban Signatures: Evaporation (WMS)

Urban Signatures: Latent Heat Flux

Urban Signatures: Sensible Heat Flux (WMS)

Urban Signatures: Temperature (WMS)

Urban Signatures: Thermal Radiation (WMS)

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