Satellites 🤝 Farmers NASA’s OpenET system turns satellite data into valuable water insights, helping farmers across the U.S. track how much water is lost to air through evapotranspiration and how to better manage their resources. Evapotranspiration is the process in which water moves from land to air. The term combines evaporation—water changing from liquid to gas (vapor)—and transpiration, the "exhaling" by plants as they release moisture back into the air. After precipitation, evapotranspirat