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Landsat: A Space Age Water Gauge
Agriculture consumes a great deal of water. As demand for water increases, the pressure's on to make sure every drop counts.

Water specialists Rick Allen, Bill Kramber and Tony Morse have created an innovative satellite-based method that maps agricultural water consumption. The team uses Landsat thermal band data to measure the amount of water evaporating from the soil and transpiring from plants' leaves. Evapotranspiring water absorbs energy, so farm fields consuming more water appear cooler in the thermal band. The Landsat observations provide an objective way for water managers to assess on a field-by-field basis how much water agricultural growers are using. Landsat is a joint program of NASA and the US Geological Survey.For complete transcript, click here.    Water specialists Rick Allen, Bill Kramber and Tony Morse have created an innovative satellite-based method that maps agricultural water consumption. The team uses Landsat thermal band data to measure the amount of water evaporating from the soil and transpiring from plants' leaves. Evapotranspiring water absorbs energy, so farm fields consuming more water appear cooler in the thermal band. The Landsat observations provide an objective way for water managers to assess on a field-by-field basis how much water agricultural growers are using. Landsat is a joint program of NASA and the US Geological Survey.

For complete transcript, click here.


Duration: 4.8 minutes
Available formats:
  320x236 (29.92 fps) WMV         36 MB
  640x360 (30.27 fps) MPEG-4   56 MB
  960x540 (30.27 fps) MPEG-4   119 MB
  1280x720 (59.94 fps) QT         226 MB
  320x180     PNG           244 KB
  160x80       PNG           65 KB
  80x40         PNG           17 KB
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Animation Number:10484
Completed:2009-09-14
Video Editor:Stefanie Misztal (UMBC)
Narrator:Jefferson Beck (UMBC)
Producer:Jennifer A. Shoemaker (UMBC)
Videographer:Jennifer A. Shoemaker (UMBC)
Keywords:
DLESE >> Agricultural science
SVS >> Earth
SVS >> Earth Science
SVS >> HDTV
SVS >> Landsat
SVS >> Land use
GCMD >> EARTH SCIENCE >> Agriculture
GCMD >> EARTH SCIENCE >> Agriculture >> Agricultural Aquatic Sciences
GCMD >> EARTH SCIENCE >> Agriculture >> Agricultural Engineering
GCMD >> EARTH SCIENCE >> Agriculture >> Agricultural Engineering >> Farm Structures
GCMD >> EARTH SCIENCE >> Agriculture >> Agricultural Plant Science >> Crop/Plant Yields
GCMD >> EARTH SCIENCE >> Agriculture >> Agricultural Plant Science >> Irrigation
GCMD >> EARTH SCIENCE >> Agriculture >> Soils >> Soil Moisture/Water Content
GCMD >> EARTH SCIENCE >> Atmosphere >> Atmospheric Water Vapor >> Evaporation
GCMD >> EARTH SCIENCE >> Atmosphere >> Atmospheric Water Vapor >> Evapotranspiration
More Information on this topic available at:
http://www.nasa.gov/topics/earth/features/landsat_water.html
 
 
Please give credit for this item to:
NASA/Goddard Space Flight Center
Stock Footage Courtesy of Visionaries, Inc.


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