SMAP

The Soil Moisture Active Passive

Platform Type

Low Earth Orbit Satellite (LEO)

Instruments

SMAP

Organizations

NASA

JPL

Orbital Altitude

685 km

Orbital Period

98.5 Minutes

Equatorial Crossing Times

06:00 desc

Experimental Eddy Products

Global plot of MESI data from 26 March 2025, with values ranging from -1.0 to 1.0. Blue indicates values below 0, and red indicates values above 0.

The sea surface height team in NOAA’s Laboratory for Satellite Altimetry produces two experimental mesoscale eddy products:

Multiparameter Eddy Significance Index (MESI)
MUltiparameter NRT System for Tracking Eddies Retroactively (MUNSTER)

NOAA NCEI Blended Seawinds (NBS v2)

Global map projection of sea surface wind speeds

The NOAA NCEI Blended Seawinds (NBS) version 2.0 dataset synthesizes observations from multiple satellites (up to seven satellites since June 2002) to create gridded wind speeds (10m, neutral). This is an updated version of the existing NOAA NBS v1.0, which is a global gridded 0.25° and 6-hourly sea surface winds product that has wide applications in marine transportation, marine ecosystem and fisheries, offshore winds, weather and ocean forecasts, and other areas.

Sea Surface Salinity - Near Real Time - SMAP

CoastWatch/OceanWatch produces 0.25-degree longitude/latitude Level-3 gridded sea-surface salinity (SSS) daily mean dataset by box averaging Soil Moisture Active Passive (SMAP) satellite observations over the global ocean.

Subscribe to SMAP

2025-11-21	Switch from Himawari-8 to Himawari-9
2025-09-11	Possible disruptions in ASCAT wind and SEVIRI SST products
2025-08-20	NOAA CoastWatch Sentinel-1C data availability
2025-06-17	Product Availability