Global Outlook for Ice and Snow: Chapter 5 - Ice in the sea
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Date
20072007
Author
United Nations Environment Programme
United Nations Environment Programme
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RT Generic T1 Global Outlook for Ice and Snow: Chapter 5 - Ice in the sea A1 United Nations Environment Programme, United Nations Environment Programme YR 2007 , 2007 LK https://wedocs.unep.org/20.500.11822/14476 PB United Nations Environment Programme AB TY - GEN T1 - Global Outlook for Ice and Snow: Chapter 5 - Ice in the sea AU - United Nations Environment Programme, United Nations Environment Programme Y1 - 2007, 2007 UR - https://wedocs.unep.org/20.500.11822/14476 PB - United Nations Environment Programme AB - @misc{20.500.11822_14476 author = {United Nations Environment Programme, United Nations Environment Programme}, title = {Global Outlook for Ice and Snow: Chapter 5 - Ice in the sea}, year = {2007 , 2007}, abstract = {}, url = {https://wedocs.unep.org/20.500.11822/14476} } @misc{20.500.11822_14476 author = {United Nations Environment Programme, United Nations Environment Programme}, title = {Global Outlook for Ice and Snow: Chapter 5 - Ice in the sea}, year = {2007 , 2007}, abstract = {}, url = {https://wedocs.unep.org/20.500.11822/14476} } TY - GEN T1 - Global Outlook for Ice and Snow: Chapter 5 - Ice in the sea AU - United Nations Environment ProgrammeUnited Nations Environment Programme, United Nations Environment Programme UR - https://wedocs.unep.org/20.500.11822/14476 PB - United Nations Environment Programme AB -View/Open
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Sean ice plays a key role for climate and is important as habitat and for human activities and economies. Observations show and models indicate that climate and sea-ice regimes are changing. Sea-ice extent in the Arctic decreased substantially during the last 30 years; Antarctic sea ice is decreasing in some areas, but overall it has shown a slight increase during this period. Climate models project further decreases in sea-ice extent in the Arctic during this century and comparable decreases in Antarctic sea-ice extent. There are uncertainties attached to the rate at which these changes will occur, and there is a risk of tipping points being crossed and abrupt reductions in sea ice occurring. To reduce these uncertainties, more large-scale continuous observations are needed, especially of ice and snow thickness.
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