This article reviews and synthesizes our current knowledge about the impact of Arctic sea ice on climates in the high-latitudes of the Northern Hemisphere...
State of the Climate in 2011Last Updated on 2015-05-09 14:34:12Worldwide, 2011 was the coolest year on record since 2008, yet temperatures remained above the 30 year average, according to the 2011 State of the Climate report released online by the National Oceanic and Atmospheric Administration (NOAA).
Back-to-back La Niñas cooled globe and
influenced extreme weather in 2011
The lead character of the 2011 climate story was a double dip La Niña, which chilled the Pacific at the start and end of the year. Many of the 2011 seasonal climate patterns around the world were consistent with common side effects of La Niña. More information.
Worldwide, 2011 was the coolest year on record since 2008, yet temperatures remained above the 30 year average, according to the 2011 State of the Climate report released online today by NOAA. The peer-reviewed report, issued in coordination with the American Meteorological Society (AMS), was... More »
Snow, Water, Ice and Permafrost in the ArcticLast Updated on 2011-05-05 00:00:00
The Arctic Monitoring and Assessment Programme’s (AMAP) new assessment of the impacts of climate change on Snow, Water, Ice and Permafrost in the Arctic (SWIPA) brings together the latest scientific knowledge about the changing state of each component of the Arctic ‘cryosphere’. It examines how these changes will impact both the Arctic as a whole and people living within the Arctic—and elsewhere in the world.
The SWIPA Assessment follows on from the Arctic Climate Impact Assessment (ACIA), published in 2005. It aims to update the findings from ACIA and to provide more in-depth coverage of issues related to the Arctic cryosphere.
The observed changes in sea ice on the Arctic Ocean and in the mass of the Greenland Ice Sheet and Arctic ice caps and glaciers over the past ten years are dramatic and represent an obvious departure from the long-term patterns.
The... More »
Earth's Changing Ice CoverLast Updated on 2011-03-11 00:00:00
This article, written by Charles W. Schmidt, a freelance writer specializing in science, medicine and technology, appeared first in Environmental Health Perspectives—the peer-reviewed, open access journal of the National Institute of Environmental Health Sciences.
The article is a verbatim version of the original and is not available for edits or additions by Encyclopedia of Earth editors or authors. Companion articles on the same topic that are editable may exist within the Encyclopedia of Earth.
Out of Equilibrium?
The World's Changing Ice Cover
In August 2010 an iceberg four times the size of Manhattan broke off Greenland’s northwestern coast and began drifting out to the sea. At nearly 100 square miles, this was the largest iceberg to appear in Arctic waters since 1962 and a fresh indicator that Greenland’s frozen landscape is... More »
Video: AAAS Global Climate-Change Video - CLEANLast Updated on 2011-02-17 00:00:00
This video has been selected for inclusion in the CLEAN Collection.
Residents of Shishmaref, Alaska, and experts like John Holdren, exploring the human impacts of global climate change.
Arctic sea ice and climateLast Updated on 2010-08-03 00:00:00
This article reviews and synthesizes our current knowledge about the impact of Arctic sea ice on climates in the high-latitudes of the Northern Hemisphere (Figure 1).The Arctic cryosphere is rapidly changing and such modifications are projected to continue into the future as outlined in the Section Sea ice in the Arctic in the Arctic Climate Impact Assessment report (ACIA 2005) and more recently by Deser and Teng (2008). While the variation in sea ice cover also are significantly influenced by changes in the state of the overlying atmosphere, evidence continues to mount regarding the importance of sea ice in driving climate variability in low, middle, and high latitudes because of its capacity to influence the exchange of radiation, sensible heat, and momentum significantly between the atmosphere and the ocean were among the first to examine the climatic... More »
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