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 significant summertime melting continue to accumulate melt days at a faster-than-average pace, except along the northern West Antarctic ice shelves, which are now near-average.

2025年1月6日 · 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) and the gray line in the time series (right) indicate 1981 to 2010 average extent for the day shown.

Open access data to inform researchers, policymakers, and othersNSIDC’s data management programs focus on preserving and providing access to cryospheric data and related geophysical data.

2025年2月4日 · Figure 3. Monthly January ice extent for 1979 to 2025 shows a decline of 2.8 percent per decade. — Credit: National Snow and Ice Data Center Hudson Bay finally freezes. Persistent winds from the west and northwest in the second half of January drove sea ice from the previously frozen areas of Hudson Bay into the area east of the Belcher Islands and along the eastern coast of the bay.

2025年1月30日 · 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 significant summertime melting continue to accumulate melt days at a faster-than-average pace, except along the northern West Antarctic ice shelves, which are now near-average.

— Credit: Agnieszka Gautier/NSIDC Areas of research. From the physical sciences to the social sciences, NSIDC scientists work on a diverse mixture of research projects that focus on various aspects of the cryosphere and how it impacts society, including snow, glaciers, ice caps, ice sheets, sea ice, permafrost, and more.

From data management and software development to scientific research, get the the basic rundown on what NSIDC does, and why our work is so important to advancing understanding of Earth’s frozen regions. Scientists, software experts, creatives, and many others work together at NSIDC. Learn more ...

From the Arctic to the Antarctic, snow and ice play a vital role in regulating Earth’s climate and providing freshwater resources to people, plants, and animals. The National Snow and Ice Data Center (NSIDC) at the University of Colorado Boulder (CU Boulder), part of …

The data set landing page contains several sections, which can be navigated to via a convenient sidebar menu: Overview: A brief summary of the data set and what it contains, including parameters, resolution, and other metadata. Data Access & Tools: Contains options for accessing the data, as well as tools to work with the data. Documentation: Links to …

This data set provides a near-real-time Climate Data Record (CDR) of sea ice concentration from passive microwave data. The Near-real-time NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration (NRT CDR) data set is the near-real-time version of the final NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration (G02202).