SMAP NRT Data and Information
- Download SMAP NRT data directly from:
- SMAP landing page at NASA's National Snow and Ice Data Center DAAC (NSIDC DAAC)
- Subscription to mailing lists by data set are available on the data set landing pages
The Soil Moisture Active Passive (SMAP) instrument 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. 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.
Note: NSIDC DAAC systems typically undergo system maintenance on Wednesdays, and access to SMAP data may not be available during these planned maintenance events. More precise maintenance times are available on the dataset landing pages on the day of the event.
SMAP
| 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 |