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

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

This data set provides raw lidar data from two regions of Alaska, USA collected as part of the NASA SnowEx 2023 field campaign. The study sites include a boreal forest environment in the Fairbanks ...

The NSIDC DAAC Advanced Microwave Scanning Radiometer - Earth Observing System sensor (AMSR-E) collection includes passive microwave data products related to sea ice concentration, sea ice motion, sea ...

Surface melting on the Greenland Ice Sheet is on a slightly above-average track for the 2025 melt season, with melt along the western coast leading the way. Overall, total melt-day extent as of June ...

Updated photon heights to include time-dependent range bias. The mean offset between ATL03 version 4 and version 5 photon heights is on the order of 1.2 cm. See more details in the user guide and/or ...

Note: To select a different data set, close this window (or tab) and navigate to the data set landing page you want. This global Level-2 (L2) data set provides daily snow cover detected using the ...

The Circum-Arctic permafrost and ground ice map is available via ftp in ESRI Shapefile format and Equal-Area Scalable Earth Grid (EASE-Grid) format. See the Format section for an explanation of the ...

What is the cryosphere? The cryosphere refers to Earth’s ice in all its forms. The term comes from the Greek word for icy cold—krios. The cryosphere includes: Snow on the ground Lake and river ice ...

This data set (ATL06) provides geolocated, land-ice surface heights (above the WGS 84 ellipsoid, ITRF2014 reference frame), plus ancillary parameters that can be used to interpret and assess the ...

Across the globe, snow and ice play a vital role in regulating Earth’s climate and providing freshwater resources to people, plants, and animals.

Sea ice data is updated daily, with a one-day lag. On occasion, there is data delay which is usually resolved within a few days. The orange line in extent and concentration images (left and middle) ...