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Collection:
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NASA Scientific Visualization Studio Collection
Collection
NASA Scientific Visualization Studio Collection
Collection
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Title:
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Snow Cover over the Northern Hemisphere during the Winter of 2002-2003 (WMS)
Title
Snow Cover over the Northern Hemisphere during the Winter of 2002-2003 (WMS)
Title
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Instrument:
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Terra/MODIS
Instrument
Terra/MODIS
Instrument
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Description:
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Legend for the Snow Cover animation.
Description
Legend for the Snow Cover animation.
Description
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Abstract:
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The amount of snow covering the land has both short and long term effects on the environment. From season to season, snow coverage and depth affect soil moisture and water availability, which directly influence agriculture, wildfire occurrences, and drought. In the long term, the part of the Earth's surface covered by snow reflects up to 80 or 90 percent of the incoming solar radiation as opposed to the 10 or 20 percent that uncovered land reflects, and this has important consequences for the Earth's climate. Satellites identify the snow cover precisely by looking at the difference between light reflected off snow in the visible and the infrared wavelengths. This visualization shows the snow cover in the Northern Hemisphere from September, 2002, through June, 2003, as measured by the MODIS instrument on the Terra satellite. Since this instrument cannot measure snow cover through clouds, this visualization designates an area as covered by snow when the instrument takes a valid measurement showing greater than 50% snow coverage in that area. This area is assumed to be snow covered until the instrument takes a valid measurement showing less than 40% snow coverage in that same area. It is possible to see topographic features in the snow cover such as the Rocky Mountains and the Himalayas, and large snow coverage paths from storms that cross the plains of the United States and Russia can also be seen.
Abstract
The amount of snow covering the land has both short and long term effects on the environment. From season to season, snow coverage and depth affect soil moisture and water availability, which directly influence agriculture, wildfire occurrences, and drought. In the long term, the part of the Earth's surface covered by snow reflects up to 80 or 90 percent of the incoming solar radiation as opposed to the 10 or 20 percent that uncovered land reflects, and this has important consequences for the Earth's climate. Satellites identify the snow cover precisely by looking at the difference between light reflected off snow in the visible and the infrared wavelengths. This visualization shows the snow cover in the Northern Hemisphere from September, 2002, through June, 2003, as measured by the MODIS instrument on the Terra satellite. Since this instrument cannot measure snow cover through clouds, this visualization designates an area as covered by snow when the instrument takes a valid measurement showing greater than 50% snow coverage in that area. This area is assumed to be snow covered until the instrument takes a valid measurement showing less than 40% snow coverage in that same area. It is possible to see topographic features in the snow cover such as the Rocky Mountains and the Himalayas, and large snow coverage paths from storms that cross the plains of the United States and Russia can also be seen.
Abstract
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Completed:
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2004-02-11
Completed
2004-02-11
Completed
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Credit:
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*Please give credit for this visualization to*
NASA/Goddard Space Flight Center
Scientific Visualization Studio
Credit
*Please give credit for this visualization to*
NASA/Goddard Space Flight Center
Scientific Visualization Studio
Credit
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Studio:
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SVS
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Animator:
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Cindy Starr (Lead)
Animator
Cindy Starr (Lead)
Animator
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Animator:
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Eric Sokolowsky
Animator
Eric Sokolowsky
Animator
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Scientist:
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Dorothy Hall (NASA/GSFC)
Scientist
Dorothy Hall (NASA/GSFC)
Scientist
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Series:
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WMS
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Data Collected:
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2002/09/01 - 2003/06/30
Data_Collected
2002/09/01 - 2003/06/30
Data Collected
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DEPC Metadata:
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*DEPC Metadata* is available here.
DEPC_Metadata
*DEPC Metadata* is available here.
DEPC Metadata
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Keywords:
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DLESE
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Keywords:
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SVS
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Keywords:
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GCMD
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Keywords:
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EARTH SCIENCE
Keywords
EARTH SCIENCE
Keywords
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Keywords:
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Cryology
Keywords
Cryology
Keywords
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Keywords:
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Cryosphere
Keywords
Cryosphere
Keywords
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Keywords:
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Snow/Ice
Keywords
Snow/Ice
Keywords
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Keywords:
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Snow Cover
Keywords
Snow Cover
Keywords
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Keywords:
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Hydrosphere
Keywords
Hydrosphere
Keywords
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note:
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Web Map Service:
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*This product is available through our Web Map Service. Click here to learn more. [ http://svs.gsfc.nas…]*
Web_Map_Service
*This product is available through our Web Map Service. Click here to learn more. [ http://svs.gsfc.nas…]* Web Map Service
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facet_where:
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Russia
facet_where
Russia
facet_where
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facet_where:
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Goddard Space Flight Center (GSFC)
facet_where
Goddard Space Flight Center (GSFC)
facet_where
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facet_where:
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United States of America
facet_where
United States of America
facet_where
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facet_when:
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2002
facet_when
2002
facet_when
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facet_when:
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September, 2002
facet_when
September, 2002
facet_when
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facet_when:
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June, 2003
facet_when
June, 2003
facet_when
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facet_what:
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Earth
facet_what
Earth
facet_what
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facet_what:
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Terra
facet_what
Terra
facet_what
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facet_what:
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WMS
facet_what
WMS
facet_what
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facet_when_year:
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2003
facet_when_year
2003
facet_when_year
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facet_when_year:
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2002
facet_when_year
2002
facet_when_year
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Animation Number:
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2899
Animation_Number
2899
Animation Number
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UID:
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SPD-SCIVS-http://svs .gsfc.nasa.gov/vis/a 000000/a002800/a0028 99/modissnowbar-IMAG E
UID
SPD-SCIVS-http://svs .gsfc.nasa.gov/vis/a 000000/a002800/a0028 99/modissnowbar-IMAG E
UID
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original url:
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original_url
original url
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