Large-Scale Atmospheric Warming in Winter and the Arctic Sea Ice Retreat
The ongoing shrinkage of the Arctic sea ice cover is likely linked to the global temperature rise, the pronounced warming in the Arctic, and possibly weather anomalies in the midlatitudes. By evaluating independent components of global atmospheric energy anomalies in winters from 1980 to 2015, the s...
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Veröffentlicht in: | Journal of climate 2016-04, Vol.29 (8), p.2869-2888 |
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description | The ongoing shrinkage of the Arctic sea ice cover is likely linked to the global temperature rise, the pronounced warming in the Arctic, and possibly weather anomalies in the midlatitudes. By evaluating independent components of global atmospheric energy anomalies in winters from 1980 to 2015, the study finds the link between the sea ice melting in the Arctic and the combination of only three well-known atmospheric oscillation patterns approximating observed spatial variations of near-surface temperature trends in winter. The three patterns are the North Atlantic Oscillation (NAO), Scandinavian blocking (SB), and El Niño–Southern Oscillation (ENSO). The first two are directly related to the ongoing sea ice cover shrinkage in the Barents Sea and the hemispheric increase of near-surface temperature. By independent dynamical processes they connect the sea ice melting and related atmospheric perturbations in the Arctic either with the negative phase of the NAO or the negative trend of atmospheric temperatures over the tropical Pacific. The study further shows that the ongoing sea ice melting may often imply the formation of large-scale circulation patterns bringing the recent trend of colder winters in densely populated areas like Europe and North America. |
doi_str_mv | 10.1175/JCLI-D-15-0417.1 |
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By evaluating independent components of global atmospheric energy anomalies in winters from 1980 to 2015, the study finds the link between the sea ice melting in the Arctic and the combination of only three well-known atmospheric oscillation patterns approximating observed spatial variations of near-surface temperature trends in winter. The three patterns are the North Atlantic Oscillation (NAO), Scandinavian blocking (SB), and El Niño–Southern Oscillation (ENSO). The first two are directly related to the ongoing sea ice cover shrinkage in the Barents Sea and the hemispheric increase of near-surface temperature. By independent dynamical processes they connect the sea ice melting and related atmospheric perturbations in the Arctic either with the negative phase of the NAO or the negative trend of atmospheric temperatures over the tropical Pacific. 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By evaluating independent components of global atmospheric energy anomalies in winters from 1980 to 2015, the study finds the link between the sea ice melting in the Arctic and the combination of only three well-known atmospheric oscillation patterns approximating observed spatial variations of near-surface temperature trends in winter. The three patterns are the North Atlantic Oscillation (NAO), Scandinavian blocking (SB), and El Niño–Southern Oscillation (ENSO). The first two are directly related to the ongoing sea ice cover shrinkage in the Barents Sea and the hemispheric increase of near-surface temperature. By independent dynamical processes they connect the sea ice melting and related atmospheric perturbations in the Arctic either with the negative phase of the NAO or the negative trend of atmospheric temperatures over the tropical Pacific. The study further shows that the ongoing sea ice melting may often imply the formation of large-scale circulation patterns bringing the recent trend of colder winters in densely populated areas like Europe and North America.</description><subject>Anomalies</subject><subject>Arctic sea ice</subject><subject>Atmosphere</subject><subject>Atmospheric forcing</subject><subject>Atmospheric oscillations</subject><subject>Atmospheric temperature</subject><subject>Circulation patterns</subject><subject>El Nino</subject><subject>El Nino phenomena</subject><subject>El Nino-Southern Oscillation event</subject><subject>Energy</subject><subject>Global temperatures</subject><subject>Global warming</subject><subject>Ice</subject><subject>Ice cover</subject><subject>Ice melting</subject><subject>Marine</subject><subject>Melting</subject><subject>North Atlantic Oscillation</subject><subject>Ocean-atmosphere system</subject><subject>Perturbation</subject><subject>Population 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Retreat</atitle><jtitle>Journal of climate</jtitle><date>2016-04-01</date><risdate>2016</risdate><volume>29</volume><issue>8</issue><spage>2869</spage><epage>2888</epage><pages>2869-2888</pages><issn>0894-8755</issn><eissn>1520-0442</eissn><abstract>The ongoing shrinkage of the Arctic sea ice cover is likely linked to the global temperature rise, the pronounced warming in the Arctic, and possibly weather anomalies in the midlatitudes. By evaluating independent components of global atmospheric energy anomalies in winters from 1980 to 2015, the study finds the link between the sea ice melting in the Arctic and the combination of only three well-known atmospheric oscillation patterns approximating observed spatial variations of near-surface temperature trends in winter. The three patterns are the North Atlantic Oscillation (NAO), Scandinavian blocking (SB), and El Niño–Southern Oscillation (ENSO). The first two are directly related to the ongoing sea ice cover shrinkage in the Barents Sea and the hemispheric increase of near-surface temperature. By independent dynamical processes they connect the sea ice melting and related atmospheric perturbations in the Arctic either with the negative phase of the NAO or the negative trend of atmospheric temperatures over the tropical Pacific. The study further shows that the ongoing sea ice melting may often imply the formation of large-scale circulation patterns bringing the recent trend of colder winters in densely populated areas like Europe and North America.</abstract><cop>Boston</cop><pub>American Meteorological Society</pub><doi>10.1175/JCLI-D-15-0417.1</doi><tpages>20</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Anomalies Arctic sea ice Atmosphere Atmospheric forcing Atmospheric oscillations Atmospheric temperature Circulation patterns El Nino El Nino phenomena El Nino-Southern Oscillation event Energy Global temperatures Global warming Ice Ice cover Ice melting Marine Melting North Atlantic Oscillation Ocean-atmosphere system Perturbation Population density Satellites Sea ice Sea level Southern Oscillation Spatial variations Surface temperature Temperature Temperature rise Temperature trends Topography Trends Weather anomalies Wind Winter |
title | Large-Scale Atmospheric Warming in Winter and the Arctic Sea Ice Retreat |
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