The Soil Moisture Active Passive (SMAP) platform measures the amount of water in the surface soil everywhere on Earth. SMAP is designed to measure soil moisture every 2-3 days.
The availability of SMAP data in near real-time (NRT) supports a variety of users and applications, including tropical cyclone imagery display, data assimilation to numerical weather prediction models, agricultural management/forecasting, short term fire forecasts, risk assessment for landslides, and the identification of saturated soil conditions. NASA's Land, Atmosphere Near real-time Capability for Earth observation (LANCE) generally provides SMAP data within 90 to 120 minutes of satellite observation.
To download SMAP NRT data, register for an Earthdata Login. Use the table below to access specific LANCE datasets.
| Product Download | Description | Volume (GB/day) | Browse |
|---|---|---|---|
| SPL1BTB_NRT | Near Real-time SMAP L1B Radiometer Half-Orbit Time-Ordered Brightness Temperatures DOI: 10.5067/UH70WUPQKCFR | 1.5 | Worldview Browse |
| SPL2SMP_NRT | Near Real-time SMAP L2 Radiometer Half-Orbit 36 km EASE-Grid Soil Moisture DOI: 10.5067/NCTT8THPWRTL | 0.045 | Worldview Browse |
SMAP NRT Data and Information
- Download SMAP NRT data directly from:
- SMAP landing page at NASA's National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC)
- Subscription to mailing lists by data set are available on the data set landing pages