SMAP Soil Moisture Change as an Indicator of Drought Conditions by Eswar, Rajasekaran, Das, Narendra N., Poulsen, Calvin, Behrangi, Ali, Swigart, John, Svoboda, Mark, Yueh, Simon, Doorn, Bradley, Entin, Jared, Rajasekaran, Eswar, Das, Narendra, Entekhabi, Dara

“…The change in soil moisture estimated from the Soil Moisture Active Passive (SMAP) satellite observations was compared with the United States Drought Monitor (USDM) and the Standardized Precipitation Index (SPI) over the contiguous United States (CONUS). The results indicated that the soil moisture change over 13-week and 26-week intervals is able to capture the changes in drought intensity levels in the USDM, and the change over a four-week interval correlated well with the one-month SPI values. …”
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Estimation of Landscape Soil Water Losses from Satellite Observations of Soil Moisture by McColl, Kaighin A., Haghighi, Erfan, Salvucci, Guido D., Akbar, Ruzbeh, Gianotti, Daniel J, Entekhabi, Dara

“…This study presents an observation-driven technique to delineate the dominant boundaries and temporal shifts between different hydrologic regimes over the contiguous United States (CONUS). The energy- and water-limited evapotranspiration regimes as well as percolation to the subsurface are hydrologic processes that dominate the loss of stored water in the soil following precipitation events. …”
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