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Summary:<\/span><\/p>

Satellite systems such as the NASA\u2019s Soil Moisture Active Passive (SMAP) mission allow us to detect how much water there is in the surface layer of the soil. When we integrate this information into a hydrologic model we can estimate the amount of water present in the surface as well as in the root zone of the soil profile, referred to as root-zone soil moisture (RZSM). <\/span><\/p>

The NASA \u2013 USDA-FAS soil moisture products are produced by assimilating Level 3 SMAP-based soil moisture retrievals into the two-layer Palmer hydrologic model using an Ensemble Kalman Filter (EnKF) technique. The composite products are produced from 3 consecutive days of quarter degree EnKF results. <\/span><\/p>

Suggested Use:<\/span><\/p>

Actual soil moisture values represent how much water there is in the surface layer of the soil profile. Values range between 0 and 25.4 mm for the surface. The brown end of the color bar indicates low (dry) soil moisture conditions, while the green colors represent high (wet) soil moisture conditions.<\/span><\/p>

Satellite/Sensor:<\/span><\/p>