2025年2月3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.

2025年2月4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.

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.

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).

Explore predictions that global climate models make about future changes in sea ice extent. Go to the NSIDC web site to: View multiple maps of various ice measurements at the same time. View an interactive sea ice extent graph to examine ice extent by …

This map shows the arctic sea ice deposits extent at annual minimum in September 2022 and at annual maximum in February 2022. The map also includes the Median ice edge line for September and February 1981-2010.

Arctic sea ice is the frozen interface between the ocean and the atmosphere. It reduces the absorption of solar energy because of its high albedo relative to the darker open ocean surface. As a physical barrier, it modifies the heat and moisture transfer between the …

Welcome to the NERSC Arctic Sea Ice Observation System. NERSC has processed daily passive microwave remote sensing data of sea ice from the Arctic since they first became available in 1978 using the NERSC developed NORSEX algorithm.

Sea ice map calculated from AMSR2 data using the ARTIST sea ice algorithm (ASI 5).

3 天之前 · Arctic Portal is pleased to announce the latest addition to our online resources—an expanded collection of Arctic maps that provide valuable insights into the region’s geography, sea ice extent, and varying definitions of the Arctic. These new maps enhance our ability to visualize and understand the dynamic changes occurring in the Arctic.