Sea Ice Today - National Snow and Ice Data Center
2024年11月4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.
Current State of Sea Ice Cover | Earth - NASA
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.
Arctic ice pack - Wikipedia
The Arctic ice pack is the sea ice cover of the Arctic Ocean and its vicinity. The Arctic ice pack undergoes a regular seasonal cycle in which ice melts in spring and summer, reaches a minimum around mid-September, then increases during fall and winter.
Arctic Ocean - Sea Ice, Polar Regions, Climate Change - Britannica
2024年10月28日 · There is no direct evidence as to the onset of the Arctic Ocean ice cover. The origin of the ice pack was influenced by a number of factors, such as the formation of terrestrial ice caps and the interaction of the Arctic and North Atlantic waters—with their different temperature and salinity structures—with atmospheric climate variables.
Sea Ice - NOAA Arctic
Arctic sea ice is an important part of the climate system. Its higher albedo reflects much of the incoming solar radiation during the summer, keeping the region cooler than an ice-free environment. The sea ice cover acts as a physical barrier between the ocean and the atmosphere, limiting energy and moisture exchange.
Sea Ice - NOAA Arctic
Arctic sea ice is the frozen interface between the ocean and atmosphere in the north, limiting ocean-atmosphere exchanges of energy and moisture and playing a critical role in the earth’s climate and the regional ecosystem.
Sea Ice - NOAA Arctic
Arctic sea ice extent was similar to 2021 values, higher than many recent years, but much lower than the long-term average. Open water areas developed near the North Pole through much of the summer, making the area easier to access for polar class tourist and research vessels; both the Northern Sea Route and Northwest Passage largely opened.
Arctic and Antarctic Sea Ice Approached Historic Lows
2024年10月16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 September 11, 2024, according to researchers at NASA and the National Snow and Ice Data Center (NSIDC). The decline continues the decades-long trend of shrinking and thinning ice cover in the Arctic Ocean. The amount of frozen seawater in the Arctic ...
Arctic ice pack - Wikiwand
The Arctic ice pack is the sea ice cover of the Arctic Ocean and its vicinity. The Arctic ice pack undergoes a regular seasonal cycle in which ice melts in spring and summer, reaches a minimum around mid-September, then increases during fall and winter.
BBC - Oceans - The Arctic Ocean - Examining the pack ice
2008年10月1日 · The frozen pack ice in the Arctic Ocean makes it one of the most inaccessible oceans in the world. For this reason, most scientific research on pack ice is carried out remotely using...