"Ice extent" refers to the measurement of how much ice covers a particular area, such as a lake, sea, or the polar regions. It is the overall size or coverage of the ice in that specific location. Full definition
The exact date and value of the minimum sea ice extent in 2017 can only be determined in the coming weeks, after a significant increase. (sciencedaily.com)
The minimum sea ice extent in 2010 fits into a long - term pattern of decline, especially in multi-year ice, which persists through the summer melt season and into another winter. (earthobservatory.nasa.gov)
Might we see a rapid loss of ice extent in the near future? (arcus.org)