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The measurements have even been used to help settle water rights conflicts in court. || ", "release_date": "2009-09-14T00:00:00-04:00", "update_date": "2023-11-15T00:00:50.292653-05:00", "main_image": { "id": 496450, "url": "https://svs.gsfc.nasa.gov/vis/a000000/a003600/a003632/et.0700_0.jpg", "filename": "et.0700_0.jpg", "media_type": "Image", "alt_text": "In this animation, the first image shows an agricultural region in Idaho on August 14, 2000, captured in the visible spectrum. The round, green circles are irrigated farm fields. The second image, using Landsat's thermal band, depicts cooler and warmer areas. Irrigated fields appear cooler because evapotranspiring water absorbs energy and cools the fields. 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