| Spatial-temporal characters of Antarctic sea ice variation |
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| 作者姓名： | 马丽娟 陆龙骅 卞林根 |
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| 作者单位： | Chinese Academy of Meteorological Sciences，Beijing 100081，China，Chinese Academy of Meteorological Sciences，Beijing 100081，China，Chinese Academy of Meteorological Sciences，Beijing 100081，China |
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| 摘 要： | 1 Introduction Nowadaysglobalclimatechangehasbeenanimportantissueintheworld.Antarctic areaisjustthekeyandsensitiveregion,fromwhichscientistsaretryingtheirbesttofind theomenofglobalclimatechange.Andfortherevolvingglobalatmosphere,PolarRegions arecoldsource.TheoceanicandatmosphericconditionofPolarRegionsisimportantto globalatmosphericcirculationandclimatechange.Antarcticareaisoneofthecoldsources ofglobalearth atmospheresystem,whileequatorialareaisitsmainheatsource(seeZhou andLuetal.1996).…
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Spatial-temporal characters of Antarctic sea ice variation |
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| Ma Lijuan,LU Longhua,BIAN Lingen.Spatial-temporal characters of Antarctic sea ice variation[J].Chinese Journal of Polar Science,2004,15(2). |
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| Authors: | Ma Lijuan LU Longhua BIAN Lingen |
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| Institution: | Chinese Academy of Meteorological Sciences,Beijing 100081, China |
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| Abstract: | Using sea ice concentration dataset covering the period of 1968-2002 obtained from the Hadley Center of UK, this paper investigates characters of Antarctic sea ice variations .The finding demonstrates that the change of mean sea-ice extent is almost consistent with that of sea-ice area, so sea-ice extent can be chosen to go on this research. The maximum and the minimum of Antarctic sea ice appear in September and February respectively. The maximum and the maximal variation of sea ice appear in Weddell Sea and Ross Sea, while the minimum and the minimal variation of sea-ice appear in Antarctic Peninsula. In recent 35 years, as a whole, Antarctic sea ice decreased distinctly. Moreover, there are 5 subdivision characteristic regions considering their different variations. Hereinto, the sea-ice extent of Weddell Sea and Ross Sea regions extends and area increases, while the sea-ice extent of the other three regions contracts and area decreases. They are all of obvious 2-4 years and 5-7 years significant oscillation periods. It is of significance for further understanding the sea-ice-air interaction in Antarctica region and discussing the relationship between sea-ice variation and atmospheric circulation. |
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| Keywords: | Antarctic sea ice mathematical diagnostic spatial-temporal variation global change |
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