5 天之前 · The sea ice cover is one of the key components of the polar climate system. It has been a focus of attention in recent years, largely because of a strong decrease in the Arctic sea ice cover and modeling results that indicate that global warming is amplified in the Arctic on account of ice-albedo feedback.

6 天之前 · 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.

2021年9月21日 · Melting glacial ice in Antarctica (pictured), the Arctic Islands, and Greenland can be measured in the shifting of the Earth’s crust. The melting of polar ice is not only shifting the levels of our oceans, it is changing the planet Earth itself.

2024年3月27日 · Melting polar ice is delaying the leap second by three years, pushing it from 2026 to 2029, the report found.

2024年9月24日 · Arctic sea ice retreated to near-historic lows in the Northern Hemisphere this summer, likely melting to its minimum extent for the year on Sept.11, 2024, according to researchers at NASA and the National Snow and Ice Data Center (NSIDC).

1 天前 · The Arctic is warming nearly four times faster than the global average, primarily due to melting ice, which accelerates warming by exposing dark ocean water. Thawing permafrost releases greenhouse ...

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.

2 天之前 · This means that, as our planet warms, Arctic regions are transforming from planetary refrigerators to radiators. This is causing Alaska's snowpack, the snow that accumulates in winter and melts in ...

Antarctica is losing ice mass (melting) at an average rate of about 150 billion tons per year, and Greenland is losing about 270 billion tons per year, adding to sea level rise.

2024年12月7日 · The researchers found that a series of extreme weather events could melt two million square kilometers or more of sea ice in a short period of time: An unusually warm fall first weakens the sea ice, followed by a warm Arctic winter …