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Apr 10, 2019 · Antarctica, on the other hand, is a continent, covered by a very thick ice cap and surrounded by a rim of sea ice and the Southern Ocean. The Arctic Ocean is very deep and closely linked with the climate systems around it, making it more sensitive to climate changes than Antarctica.
- World of Change: Antarctic Sea Ice - NASA Earth Observatory
Antarctic sea ice peaks in September (the end of Southern...
- Antarctic Sea Ice Near Historic Lows; Arctic Ice Continues ...
Historically, the area of sea ice surrounding the Antarctic...
- Current State of Sea Ice Cover | Earth - NASA
Shown below are up-to-date satellite observations of the sea...
- World of Change: Antarctic Sea Ice - NASA Earth Observatory
Feb 18, 2020 · Antarctic sea ice peaks in September (the end of Southern Hemisphere winter) and usually retreats to a minimum in February. These image pairs show the average concentration of Antarctic sea ice for the month of September (left) and the following February (right) from September 1990 to February 2021.
Mar 14, 2023 · Published March 14, 2023. As it does in the Arctic, the surface of the ocean around Antarctica freezes over in the winter and melts back each summer. Antarctic sea ice usually reaches its annual maximum extent in mid- to late September, and reaches its annual minimum in late February or early March.
Mar 25, 2024 · Historically, the area of sea ice surrounding the Antarctic continent has fluctuated dramatically from year to year while averages over decades have been relatively stable. In recent years, though, sea ice cover around Antarctica has plummeted.
- Background
- Northern Hemisphere Sea Ice Cover
- Southern Hemisphere Sea Ice Cover
- About These Images
- How to Cite This Page
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. This results from the high reflectivity (a...
Figure 1. 10-year averages between 1979 and 2018 and yearly averages for 2007, 2012, and 2024 of the daily (a) ice extent and (b) ice area in the Northern Hemisphere and a listing of the extent and area of the current, historical mean, minimum, and maximum values in km2. Data source: Comiso (2023)1 Figure 2. Color-coded map of the daily sea ice con...
Figure 5. 10-year averages between 1979 and 2018 and yearly averages for 2012, 2014, and 2024 of the daily (a) ice extent and (b) ice area in the Southern Hemisphere and a listing of the extent and area of the current, historical mean, minimum, and maximum values in km2. Data source: Comiso (2023)1 Figure 6. Color-coded map of the daily sea ice con...
These images were produced with daily sea ice concentrations derived with the Bootstrap Algorithm using satellite observations from the Scanning Multi-channel Microwave Radiometer (SMMR), the Special Sensor Microwave Imager (SSM-I) and Sounder (SSMIS), and the Advanced Microwave Scanning Radiometer 2 (AMSR2) instruments. This webpage is updated wit...
J. C. Comiso, A. C. Bliss, R. Gersten, C. L. Parkinson, and T. Markus (2024), Current State of Sea Ice Cover, https://earth.gsfc.nasa.gov/cryo/data/current-state-sea-ice-cover, last access: MM-DD-YYYY. If referencing any current or archived images from this page, please also cite the following: J. C. Comiso, A. C. Bliss, R. Gersten, C. L. Parkinson...
Antarctic sea ice is the sea ice of the Southern Ocean. It extends from the far north in the winter and retreats to almost the coastline every summer. [1] Sea ice is frozen seawater that is usually less than a few meters thick.
The Antarctic ice sheet is a continental glacier covering 98% of the Antarctic continent, with an area of 14 million square kilometres (5.4 million square miles) and an average thickness of over 2 kilometres (1.2 mi). It is the largest of Earth's two current ice sheets, containing 26.5 million cubic kilometres (6,400,000 cubic miles) of ice ...
