Category: Responding to Natural Disasters and Environmental Changes
Project Team: Coastal Mid-Atlantic Water Resources III
Team Location: NASA Langley Research Center – Hampton, Virginia
Dr. Kenton Ross (NASA DEVELOP National Program)
Jamie Favors (NASA DEVELOP National Program)
Crop irrigation accounts for a considerable amount of water use in the Coastal Mid-Atlantic region. Better understanding of how much water farmers need to irrigate their fields will help decrease both water waste and the economic burden for farmers. The Mapping Evapotranspiration at High Resolution with Internalized Calibration (METRIC) model is a powerful tool that calculates evapotranspiration (ET) based on localized data. Executable from a Python script, the model can be used as a decision-support tool that allows farmers to make more informed decisions about when irrigation is necessary. METRIC estimates ET using a series of equations where local input variables are acquired from Landsat 8 sensors, a U.S. Geological Survey (USGS) survey-based Digital Elevation Model (DEM), and local weather conditions. While METRIC-derived ET estimates are beneficial for irrigation purposes, they also can provide state officials with a useful means of drought monitoring. Utilizing data from NASA Earth observations in the Coastal Mid-Atlantic region will contribute to a large-scale, more-complete understanding of the water consumption behavior in an area that can be used for both policy and individual agricultural decisions.
[insert page=’vps-2015-grid’ display=’content’]