太平洋海温对冬季阿留申低压的影响
THE EFFECTS OF SEA TEMPERATURE IN PACIFIC ON ALEUTIAN LOW IN WINTER
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摘要: 众多的研究表明,海温异常对大气环流具有一定的影响作用。鉴于阿留申低压与我国乃至东亚地区天气气候的密切关系,本文重点分析了太平洋海温对冬季阿留申低压的影响问题,对阿留申低压与500hPa环流的联系在此也作了简单的讨论。为便于本文之研究,根据1951-1986年冬季各月海平面气压场资料,定义了冬季阿留申低压强度指数。在月平均海平面气压图上,60°N以南的太平洋区域,对1010 hPa范围内的每个网格点,取1009hPa为1,1008hPa为2,1007hPa为3……余类推,用其累加值作为月阿留申低压强度指数。冬季强度指数为12月至翌年2月各月强度指数和的平均。Abstract: In this paper, the effects of sea temperature in Pacific on Aleutian Low in winter are analysed. It is found that there is a close correlation between Aleutian Low in winter and the sea surface temperature in the regions of(40-50°N,160°E-175°W) and (5°-10°S, 145°120°W) East Pacific in Autumn. It is also found that El Nino event could affect the variation of intensity of Aleutian Low in some degree. In addition, the periodic variation of Aleutian Low and its relationship with 500hPa circulation are also discussed.
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王绍武,东亚大气活动中心的多年变化与我国的气候振动,气象学报,32,1,7.9-36,1362 王绍武,大气活动中心的多年变化,气象学报,31,4,304-317,1962 陈谋国编,气象统计预报,207-214,空军气象学院出版社,1981 Angell,J.R.,Comparison of variations in atmospheric quantities with sea surface temperature variations in equatorial Eastern Pacific,Mon.Wea.Rev.,109,230-243,1981.
Bjerknes,J.,Atmospheric teleconneciions from the equatorial Pacific,Mon.Wea.Rev.,97.163-172,1969.
赵宗慈,王绍武,陈振华,大气与海洋相互作用的季节变化,长期天气预报文集,66-73,气象出版社.1981
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