2025年2月3日 · 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.

Visualize sea ice extent (area of ocean with at least 15 percent sea ice concentration) data for the Arctic and Antarctic. View and compare sea ice extent data for any year or any combination of years from 1979 to present (including near-real-time daily data).

Sea ice differs between the Arctic and Antarctic, primarily because of their different geographies. The Arctic is a semi-enclosed ocean, almost completely surrounded by land. As a result, the sea ice that forms in the Arctic is not as mobile as sea ice in the Antarctic.

This map shows sea ice concentration across the Arctic Ocean and surrounding seas. Concentration is color coded, with high concentrations appearing in white or very light blue, and low concentrations appearing in darker blue.

The daily Sea Ice Index provides a quick look at Arctic-wide changes in sea ice. It provides consistently processed daily ice extent and concentration images and data since 1979.

2024年10月31日 · The Sea Ice Analysis Tool allows users to analyze monthly-averaged or daily sea ice extent and concentration via interactive maps. In addition, users can plot monthly ice extent anomalies, map sea ice concentration anomalies, and display images of trends in sea ice concentration, all for a variety of date, climatology, and trend ranges.

This interactive map shows monthly sea ice concentration anomalies in the Arctic Ocean. A different map display is available for every month of every year in the time series. Sea ice concentration is a measurement of the amount of sea ice …

Each monthly map shows how much of the Arctic Ocean is covered by sea ice, and what age the ice is. The sea ice is color-coded to indicate whether it is young, thin ice (less than a year old), or older, thicker ice.

2024年9月4日 · The map on the left shows sea ice concentration in the Arctic on September 2, 2024, from the Advanced Microwave Scanning Radiometer 2 (AMSR2) instrument. The satellite image on the right shows sea ice conditions near the North Pole on August 25, 2024, from the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument on the NASA Terra ...

2024年9月24日 · The map on the left shows Arctic sea ice extent for September 11, 2024, at 4.28 million square kilometers (1.65 million square miles). The orange line shows the 1981 to 2010 average extent for that day.