Earth  ID: 3632

Evapotranspiration from Landsat

Instruments on the Landsat satellites capture images in the visible spectrum, but they also take images in wavelengths invisible to the naked eye. Landsat's thermal imager captures land surface temperature data. As farmers irrigate fields, water evaporates from the soil and transpires from plants' leaves. The combined process is called evapotranspiration. Evapotranspiring water absorbs energy, so farm fields consuming more water appear cooler in the thermal band. Landsat-based evapotranspiration measurements provide an objective way for water managers to assess on a field-by-field basis how much water agricultural growers are using. The measurements have even been used to help settle water rights conflicts in court.

Visualization Credits

Adam Martin (UMBC): Lead Animator
Lori Perkins (NASA/GSFC): Animator
Stefanie Misztal (UMBC): Video Editor
Jennifer A. Shoemaker (UMBC): Producer
Darrel Williams (NASA/GSFC): Scientist
Richard Trezza (University of Idaho): Scientist
Richard Allen (University of Idaho): Scientist
Jennifer A. Shoemaker (UMBC): Writer
Please give credit for this item to:
NASA/Goddard Space Flight Center Scientific Visualization Studio

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Data Used:
Landsat-7/ETM+ 08/14/2000

This item is part of this series:
Agriculture Animations - Land Use Change

DLESE >> Environmental science
GCMD >> Earth Science >> Atmosphere >> Atmospheric Water Vapor >> Evaporation
GCMD >> Earth Science >> Atmosphere >> Atmospheric Water Vapor >> Evapotranspiration
GCMD >> Location >> Idaho
SVS >> For Educators
SVS >> Farming
SVS >> Water Tables
NASA Science >> Earth

GCMD keywords can be found on the Internet with the following citation: Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version