| 2008年海洋和大气环流异常及对中国气候的影响 |
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| 引用本文： | 张培群,贾小龙,王永光.2008年海洋和大气环流异常及对中国气候的影响[J].气象,2009,35(4):112-117. |
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| 作者姓名： | 张培群 贾小龙 王永光 |
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| 作者单位： | 国家气候中心,中国气象局气候研究开放实验室,北京,100081 |
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| 摘 要： | 2008年,尽管总体来看,全国天气气候的持续异常较弱,未发生大范围持续干旱和严重洪涝灾害,但依然出现了非常显著的天气气候异常特征,如全国平均年降水量比常年偏多,为近10年来降水最多的年份;夏季华南降水异常偏多,黄淮降水偏多;年平均气温偏高,但冬季气温偏低,年初南方遭遇罕见低温雨雪冰冻灾害;在南海和西太平洋生成的台风个数明显偏少,但是登陆台风偏多,初台异常偏早.分析发现,2008年赤道中东太平洋总体处在冷水位相,受海洋异常强迫和海气相互作用的影响,北半球大气环流表现出的主要特征是:500hPa西太平洋副高强度和位置变化较大;冬夏季风均偏强;冬春季西太平洋暖池区热带对流活动偏强,夏秋季则偏弱;1月份,亚洲中高纬度经向环流异常发展,2至4月份则以纬向环流为主,春季后期至秋季,经纬向环流的转换较快,环流的持续性较弱.这些环流异常是影响2008年中国气候异常的主要原因.
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| 关 键 词： | 大气环流 海温 气候异常 |
| 收稿时间： | 3/5/2009 12:00:00 AM |
Anomalies of Ocean and General Atmospheric Circulation in 2008 and Their Impacts on Climate Anomalies in China |
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| Zhang Peiqun
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Jia Xiaolong
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Wang Yongguang.Anomalies of Ocean and General Atmospheric Circulation in 2008 and Their Impacts on Climate Anomalies in China[J].Meteorological Monthly,2009,35(4):112-117. |
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| Authors: | Zhang Peiqun Jia Xiaolong Wang Yongguang |
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| Institution: | The Laboratory of Climate Study of CMA;National Climate Center;Beijing 100081 |
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| Abstract: | Although overall in 2008, there are not serious persistent drought and flood disasters happened over countrywide due to the week anomalies of climate, some significant anomalies of synoptic and climatic features occurred in China such as annual mean precipitation is above normal and ranked first among recent 10 years,significant wet in South China and wet again in Huanghuai region during summer, annual mean temperature is above normal while cold in winter with rare snow storm and ice-freeze disasters in sou... |
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| Keywords: | general circulation anomaly sea surface temperature climate anomaly |
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