2025年1月23日 · Shown below are up-to-date satellite observations of the sea ice covers of both the Arctic and the Antarctic, along with comparisons with the historical satellite record of more than 4 decades.

2025年1月6日 · Obtain daily sea ice extent values, ranges, and median values for the Arctic or the Antarctic. Analyze monthly-averaged or daily sea ice extent and concentration via interactive maps. Plot monthly ice extent anomalies, map sea ice concentration anomalies, and more.

2024年9月24日 · Tracking sea ice changes in real time has revealed wide-ranging impacts, from losses and changes in polar wildlife habitat to impacts on local communities in the Arctic and international trade routes.

Up-to-date satellite observations of the sea ice covers of both the Arctic and the Antarctic, along with comparisons with the historical satellite record of more than 4 decades.

Snow cover extent provided by the Rutgers University Global Snow Laboratory (GSL) is available from 1967–2024 for the North America + Greenland, Northern Hemisphere, Eurasia, and North America. All anomalies are relative to the 1991–2020 average.

Ice, which covers 10 percent of Earth's surface, is disappearing rapidly. Select a topic below to see how climate change has affected glaciers, sea ice, and continental ice sheets worldwide.

Daily maps, charts, and animations show the extent of snow and ice over the contiguous United States, Alaska, or the whole Northern Hemisphere. You can explore sequences of images to see how snow and ice cover grow and shrink over a year or change from decade to decade.

2025年1月29日 · Ice Sheets Today offers the latest satellite data and scientific analyses on surface melting of the Greenland Ice Sheet in the Northern Hemisphere and Antarctic Ice Sheet in the Southern Hemisphere. Surface melt on each ice sheet results from a combination of daily weather conditions and the amount of solar energy absorbed by its snow and ice.

2024年3月25日 · This year’s Arctic ice maximum is the 14th lowest on record. Complex weather patterns make it difficult to predict what will happen in any given year. The Arctic Ocean sea ice reached its annual maximum on March 14, continuing the long-term decline in ice at the poles.

2024年12月4日 · On September 19, Antarctic sea ice likely reached its annual maximum extent of 17.16 million square kilometers (6.63 million square miles). The 2024 maximum is the second lowest in the 46-year satellite record above only 2023.