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Vortices of water, called "eddies," form off the northwestern coast of North America in the winter, and are particularly large during El Nino winters. Users can read and view satellite imagery which explains how these eddies carry nutrient-rich water offshore, providing nourishment for phytoplankton, microscopic plants which form the foundation of the marine food chain. This is part of NASA's Earth ... Full description.
Grade level: High (9-12)
Resource type: Imagery - remotely sensed, Ref. material
Subject: Atmospheric science, Ecology, Physical oceanography
 
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Milutin Milankovitch formulated a comprehensive mathematical model that calculated latitudinal differences in solar radiation upon the Earth's surface and the corresponding surface temperatures for 600,000 years prior to the year 1800. Readers can learn how Milankovitch developed his theories and how they were confirmed years later by climatic data found in deep-sea sediment cores, which indicated ... Full description.
Grade level: High (9-12)
Resource type: Journal article
Subject: Atmospheric science, Climatology, Space science
 
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Desertification, the degradation of formerly productive land into desert, is a complex process. It involves multiple causes, and it proceeds at varying rates in different climates. This web page, produced by the U.S. Geological Survey, features text and photographs that explain what desertification is, how human activities may contribute to it, how satellite imagery is used for monitoring vulnerable ... Full description.
Grade level: High (9-12)
Resource type: Photograph, Ref. material
Subject: Atmospheric science, Climatology, Environmental science
 
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After Antarctica, Greenland's ice cap contains the second largest mass of frozen fresh water in the world. Based on new research using NASA's airborne laser altimeter, scientists have identified pronounced thinning of Greenland's ice cap. This new research indicates enough ice loss to cause a measurable rise in sea levels. This site, produced by NASA's Scientific Visualization Studio, features text, ... Full description.
Grade level: High (9-12)
Resource type: Imagery - remotely sensed, Ref. material
Subject: Atmospheric science, Cryology, Environmental science
 
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Deserts are classified by their location and dominant weather pattern into several types: trade wind, midlatitude, rain shadow, coastal, monsoon, or polar deserts. Former desert areas presently in nonarid environments are paleodeserts, and extraterrestrial deserts exist on other planets. This site, produced by the U.S. Geological Survey, describes each type of desert using text and photographs. Full description.
Grade level: High (9-12)
Resource type: Imagery - remotely sensed, Ref. material
Subject: Atmospheric science, Environmental science, Geology, Soil science
 
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This site, part of NASA's Classroom of the Future program, describes how oceanic temperatures, currents, and atmospheric pressure patterns vary and, under certain conditions, produce an ENSO (El Nino Southern Oscillation) event. It features text, scientific illustrations, a glossary, teacher pages, and a list of references. Full description.
Grade level: High (9-12)
Resource type: Illustration - scientific, Ref. material
Subject: Atmospheric science, Climatology, Physical oceanography
 
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This webpage is part of NASA's Classroom of the Future program. It provides background information about how ocean temperatures, currents, and atmospheric conditions combine to produce an El Nino event. The site features text, scientific illustrations, a glossary, and links to other Classroom of the Future pages. Full description.
Grade level: High (9-12)
Resource type: Glossary, Ref. material
Subject: Atmospheric science, Climatology, Physical oceanography
 
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The ocean and atmosphere each react to changes in the other. These reactions and counter-reactions can snowball until the system builds to a point where potentially disastrous effects occur, such as the El Nino events of 1982-83 and 1997-98. This site describes how the Jet Propulsion Laboratory's TOPEX-Poseidon satellite was used to monitor the amount of sea level rise in the Eastern Pacific Ocean, ... Full description.
Grade level: High (9-12)
Resource type: Ref. material
Subject: Atmospheric science, Climatology, Physical oceanography
 
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This webpage, one of NASA's fact sheets, describes the role of the oceans, clouds, and aerosols in moderating climate, which has resulted in less-than-expected temperature increases as carbon dioxide levels have increased. It also describes the efforts of scientists to construct computer models to understand interactions between the atmosphere and ocean, and to perform space-based oceanography using ... Full description.
Grade level: High (9-12)
Resource type: Ref. material
Subject: Atmospheric science, Environmental science, Physical oceanography
 
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To gather long-term information about the world's oceans and currents, orbiting instruments must take extremely precise measurements of the height of the ocean surface. Ocean surface topography data contains information that has significant practical applications in such areas as the study of worldwide weather and climate patterns, the monitoring of shoreline evolution, and the protection of ocean ... Full description.
Grade level: High (9-12)
Resource type: Imagery - remotely sensed, Visualization - scientific, Ref. material
Subject: Atmospheric science, Climatology, Physical oceanography
 
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Results 71 - 80 of 115 <<  4 5 6 7 8 9 10 11 12  >>