The Dictionary of the Climate Debate (DCD)

ice extent
Definition: A two-dimensional measure that shows how much of ocean surface is covered with sea ice.

Example: "NSIDC uses data from Department of Defense satellites, which go back to 1979. Over the last 30 years, this data set has shown a major decline in ice extent, which is more pronounced in summer months." (Alaska Dispatch, Nov 24/11)

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