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LANCE AMSR2 Products

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The conceptual diagram of NASA's A-Train Satellite Constellation including GCOM-W1

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LANCE AMSR2 NRT Data Products from GCOM-W1

If you wish to retrieve multiple products at the same time (download in bulk), please reference these instructions.

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Metadata QA Browse Worldview

NRT AMSR2 L2B Global Swath GSFC Profiling Algorithm 2010: Surface Precipitation, Wind Speed over Ocean, Water Vapor over Ocean and Cloud Liquid Water over Ocean

data metadata QA browse worldview

The GCOM-W1 AMSR2 Level-2B rain and ocean products include global precipitation and ocean parameters (not including Sea Surface Temperatures), calculated by the GPROF 2010V2 using resampled Tb (Level-1R) data provided by JAXA. Retrieved parameters include global total precipitation, global rainfall, total precipitable water (TPW), ocean wind speed (OWS), columnar cloud liquid water (CLW) over ocean, and columnar water vapor (CWV) over ocean.


Note: There are some “square holes” in the lower center of many of the RainOcean images.  This is caused by erroneous sea ice values in the Reynolds Sea Ice product that is used to process the data. This problem will be resolved when the RainOcean algorithm is updated to GPROF2014, which uses the NOAA Autosnow product for land snow cover as well as sea ice.

NRT AMSR2 Daily L3 Global Snow Water Equivalent EASE-Grids

data metadata QA browse worldview

The GCOM-W1 AMSR2 Level-3 Snow Water Equivalent (SWE) data set contains snow water equivalent (SWE) data and quality assurance flags mapped to the Northern and Southern Hemisphere 25 km Equal-Area Scalable Earth Grids (EASE-Grids). As NRT Tb Level -1R data are received from JAXA throughout the day, partial daily products are generated and identified with a product maturity code of "P" in the filename. Once all Level-1R inputs are available, the complete daily product contains product maturity code "R" (near Real time) in the filename. Incremental processing makes data available to the user as it is received, rather than at the end of the day.


Note: JAXA's NRT L1R brightness temperature data are supplied to us in "nearly-orbit" files.  Unlike the standard products, the data in these files usually doesn't start or end exactly at the north pole.  We process these data in the form in which we receive them by splitting them into descending and ascending "half-orbit" files at the south pole inflection point.  Therefore, there may be extra or missing data at the beginning of the descending a half-orbit and at the end of the ascending half-orbit.

Improved latency for the near real time L1R data means that AMSR2 LANCE products are consistently available within the target time period of three hours from observation.  However, because the AMSR2 snow product is generated only from the descending passes, when data are missing at the beginning of the descending half-orbit, that data will be missing from the resulting snow product and corresponding imagery as well.

NRT AMSR2 L2B Surface Soil Moisture EASE-Grids


NRT AMSR2 Daily L3 6.25 km 89 GHz Brightness Temperature (Tb) Polar Grids


NRT AMSR2 Daily L3 12.5 km Tb, Sea Ice Concentration and Snow Depth Polar Grids


NRT AMSR2 Daily L3 25 km Tb and Sea Ice Concentration Polar Grids



NASA Official:
Rahul Ramachandran

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