National Snow and Ice Data Center

New version release: Snow Today Viewer now showing new data version plus a new region

NSIDC and the Snow Today Team are pleased to announce that the Snow Today Daily Snow Viewer web application is displaying a new version of snow properties data and New Zealand has been added as a ...
National Snow and Ice Data Center

New data set release: SnowEx23 Apr23 IOP Snow Pit Measurements, Version 1

The SnowEx23 Apr23 IOP Snow Pit Measurements, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains ...
Arctic Sea Ice

User notice: Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR, Version 1

The MEaSUREs Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR, Version 1 data set, available at the NASA National Snow and Ice Data Center Distributed ...
Arctic Sea Ice

ASO L4 Lidar Point Cloud Digital Terrain Model 3m UTM Grid, Version 1

Blue outlined yellow areas on the map below indicate the spatial coverage for this data set.
Arctic Sea Ice

MASIE-NH Daily Image Viewer

Use the MASIE-NH Daily Image Viewer to see where Arctic sea ice is now and how that data compares to the last four years. The data shown below is obtained nightly and comes from the most recent full ...
Arctic Sea Ice

Arctic and Antarctic Regional Masks for Sea Ice and Related Data Products, Version 1

As a condition of using these data, you must cite the use of this data set. Such a practice gives credit to data set producers and advances principles of transparency and reproducibility. Other ...
Arctic Sea Ice

Global Terrestrial Network for Permafrost (GTN-P), Version 1

Dear data users, NSIDC does not archive or provide citation guidance for these data. The Global Terrestrial Network for Permafrost (GTN-P) was established in 1999 by the International Permafrost ...
Arctic Sea Ice

ICESat-2 Major Activities (includes yaw flips), last updated 16 Dec 2025

Home Data ICESat-2 Major Activities (includes yaw flips), last updated 16 Dec 2025ICESat-2 Major Activities (includes yaw flips), last updated 16 Dec 2025 ...
Arctic Sea Ice

ATL03/ICESat-2 Data Gaps (applies to all ICESat-2 products), last updated 16 Dec 2025

Home Data ATL03/ICESat-2 Data Gaps (applies to all ICESat-2 products), last updated 16 Dec 2025 ...
Arctic Sea Ice

SnowEx23 Soil Moisture Sensor Measurements, Version 1 Technical Reference

FOR THE PUBLIC News & Stories Learn About Snow & Ice Current Conditions & Analyses Featured Research Careers For the Media EDUCATORS/STUDENTS Current Conditions & Analyses Explore Data Help Center Our ...
Arctic Sea Ice

What is the difference between sea ice area and extent?

Scientists may report different numbers for how much Arctic or Antarctic sea ice exists at a particular time. Different satellite sensors “see” sea ice differently, but another factor is whether ...
Arctic Sea Ice

Spring is in the air

Arctic sea ice extent for March set a record low in the 47-year satellite data record. Extent was below average everywhere except the East Greenland Sea. Nearly all March monthly average extents since ...