NOAA@NSIDC is pleased to announce the upcoming release of Sea Ice Index, Version 4, available at the National Snow and Ice Data Center on August 1. This new version transitions from SSMIS to AMSR2 ...

A prolonged period of extensive ice sheet melting from roughly July 7 to July 20 tipped the 2025 melt season to above the ...

ICESat-2 Derived Canopy Height Model, Version 1 is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set provides a regression-based ...

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The SnowEx21 Prairie Station Digital Surface Models from UAV-LiDAR, Version 1 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been ...

With the migration of GLAS/ICESat data to the NASA Earthdata Cloud, transformation services will be retired and no replacement services in the cloud are planned for GLAS/ICESat L1B Global Elevation ...

The left map illustrates the cumulative melt days on the Greenland Ice Sheet for the 2025 melt season through June 30. The ...

These data sets provide daily files of brightness temperature data and sea ice concentrations for both the Northern and Southern Hemispheres. These data products serve as a replacement for the ...

The SSMIS data are used as input for this NSIDC-produced data set, which will therefore stop processing after 31 July 2025.

What This Means For You: As a user of these datasets, you should anticipate a gap in data availability during the transition to alternative sources. We are actively evaluating possible alternative ...

Surface melting for the Antarctic ice sheet appears to have set a record for the 46-year satellite observation period on January 2, 2025. All areas of the Antarctic coast that generally see ...

Although area and extent may sound synonymous, they are different measurements, rendering different numbers, even from the same satellite observations. Sea ice area is the total region covered by ice.