Antarctic sea ice is melting like never before
Antarctic sea ice refers to the ice that forms and floats on the Southern Ocean surrounding Antarctica. It is distinct from the ice that covers the continent of Antarctica itself, which is land-based ice. Here are some key points about Antarctic sea ice: 1. Formation: Antarctic sea ice forms during the Southern Hemisphere's winter months when the temperature drops significantly. It is primarily composed of frozen seawater. 2. Seasonal Variation: Antarctic sea ice exhibits significant seasonal variation. During the austral winter (Southern Hemisphere winter), it expands as temperatures drop, and during the austral summer, it retreats as temperatures rise. 3. Extent: The extent of Antarctic sea ice varies from year to year but typically reaches its maximum extent around September and its minimum extent around February or March. The maximum extent can cover an area roughly equivalent to the size of the continent of Antarctica. 4. Role in Climate: Sea ice plays a crucial rol...