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 ...

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

NOAA@NSIDC is pleased to announce that the Sea Ice Index, Version 3 data set, accessible through the National Snow and Ice Data Center (NSIDC), has been updated from near-real-time data to final data ...

The National Snow and Ice Data Center was informed on 24 June 2025 that the Department of Defense (DoD) will cease processing and delivering the Special Sensor Microwave Imager/Sounder (SSMIS) data no ...

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) learned yesterday that the Department of Defense (DoD) will stop processing and delivering the Special Sensor ...

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is pleased to announce performance improvements to the OpenAltimetry web application. These updates include: ...

Using decades of satellite snow data from NASA’s NSIDC DAAC, researchers discovered that caribou in the Bathurst herd begin their epic migration just days after Arctic snowmelt begins—revealing a ...

Recent delivery from the US Navy of the SSMIS passive microwave data that several sea ice and brightness temperature products use has become more sporadic. The Defense Department has informed NSIDC ...

May sea ice extent in the Arctic averaged 12.56 million square kilometers (4.85 million square miles), tying with 2004 for seventh lowest on the 47-year satellite record. Antarctic sea ice extent for ...

Arctic sea ice extent through most of April changed very little. Only at the end of the month did extent begin to decline. Because the month started with unusually low extent, however, the average ...