This video segment, adapted from a NOVA broadcast, explains what might happen to global sea level if atmospheric warming caused the collapse and melting of the West Antarctica Ice Sheet. The segment is three minutes nineteen seconds in length. Full description.

This site features a video that illustrates both seasonal patterns and long-term changes in sea ice distribution across the Arctic Ocean. It draws data from two satellite instruments that measure emitted microwave radiation, which helps distinguish open ocean from ice. It shows that during the winter months, a layer of ice forms across vast expanses of the Arctic Ocean and each summer, more than half ... Full description.

Arctic sea ice concentrations in March of each year from 1979 through 1998 Full description.

Arctic sea ice concentrations in September of each year from 1979 through 1998 Full description.

Arctic sea ice concentrations in March of each year from 1979 through 1998 Full description.

Arctic sea ice concentrations in March of each year from 1979 through 1998 Full description.

Arctic sea ice concentrations in September of each year from 1979 through 1998 Full description.

Arctic sea ice concentrations in September of each year from 1979 through 1998 Full description.

This comprehensive site is an introduction to sea ice: what it is, how it forms, how it is studied, how it affected historical expedition in the polar regions, and what role it plays in the global climate. The site contains a glossary of sea ice terms and references to additional information, which all serve as an excellent introduction. Data are also available from various collection methods for ... Full description.

This animation shows the daily sea ice surface temperature over the northern hemisphere from September 2002 through May 2003. The sea ice surface temperature was measured by the MODIS instrument on the Aqua satellite. Since this instrument cannot take measurements through clouds, in cloud-covered regions or areas with suspect data quality, the prior days value is retained until a valid data reading ... Full description.