U.S. National Ice Center Arctic and Antarctic Sea Ice Concentration and Climatologies in Gridded Format, Version 1

Notice: Due to funding limitations, this data set was recently changed to a “Basic” Level of Service. Learn more about what this means for users and how you can share your story here: <a href="https://nsidc.org/data/user-resources/data-announcements/user-notice-level-service-update-data-products">Level of Service Update for Data Products</a>.<br><br>Weekly sea ice concentration charts from the U.S. National Ice Center (USNIC) along with total ice concentration, multiyear ice concentration, first-year ice concentration, thin ice concentration, and fast ice extent. In addition, there are also period-of-record, 5-year and 10-year climatological averages.