ASCAT Soil Moisture (H SAF)
Gov-Public
Near-real-time scatterometer soil moisture from EUMETSAT — hours of latency, useful for operational monitoring.
Data, Monitoring & ForecastingActiveSatellite Soil Moisture DataStreamflow Forecasting
SMAP
ActiveNASA's L-band radiometer soil moisture mission — 9km/36km near-surface moisture, daily, since 2015.
by NASA / NSIDC
- Pricing
- Gov-Public
- License
- US Government (public domain)
- Commercial use
- Permitted
- Ecosystem
- Google Earth Engine, Python
- Platform
- Windows, macOS, Linux
About SMAP
SMAP (Soil Moisture Active Passive) measures near-surface (top ~5cm) soil moisture globally using an L-band radiometer, distributed through NSIDC at 9km (enhanced) and 36km resolution with roughly 2-3 day repeat coverage since 2015. An L4 product adds a model-based root-zone soil moisture estimate for users needing depth beyond the radiometer's shallow sensing.
It is the reference satellite soil-moisture mission for drought monitoring, irrigation scheduling and antecedent-moisture inputs to event-based rainfall-runoff models, with a data record now long enough for trend analysis.
Where it fits in the workflow
TerrainCatchmentRainfallRunoffRoutingHydraulicsMappingReporting
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