| 华北夏季降水与北半球环流及北太平洋海温关系的初步分析 |
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| 引用本文： | 于润玲,孙照渤,陈海山.华北夏季降水与北半球环流及北太平洋海温关系的初步分析[J].南京气象学院学报,2002,25(5):577-586. |
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| 作者姓名： | 于润玲 孙照渤 陈海山 |
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| 作者单位： | 南京气象学院,大气科学系,江苏,南京,210044 |
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| 基金项目： | 国家自然科学基金项目 40 175 0 2 3 |
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| 摘 要： | 在利用基于Z指数的判别方法确定华北地区严重旱涝年份的基础上，应用合成分析方法研究了严重旱涝年的环流形势并初步分析了华北夏季旱涝的成因。然后用相关分析研究方法找出了与华北地区夏季降水关系密切的海温关键区，即赤道中东太平洋地区和北太平洋中高纬地区。利用大气环流模式进行数值试验，进一步研究了两个区域海温影响华北降水的地理机制和相对重要性，得到了一些有意义的结果。最后初步探讨了影响华北夏季降水异常的可能物理机制。
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| 关 键 词： | 夏季 降水 环流形势 北太平洋 海温异常 数值试验 华北地区 旱涝 |
| 文章编号： | 1000-2022(2002)05-0577-10 |
| 修稿时间： | 2001年12月4日 |
Relationship between North China Summer Rainfall and Northern Hemisphere Circulation and North Pacific Sea Surface Temperature |
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| YU Run-ling,SUN Zhao-bo,CHEN Hai-shan.Relationship between North China Summer Rainfall and Northern Hemisphere Circulation and North Pacific Sea Surface Temperature[J].Journal of Nanjing Institute of Meteorology,2002,25(5):577-586. |
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| Authors: | YU Run-ling SUN Zhao-bo CHEN Hai-shan |
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| Abstract: | The circulation patterns corresponding to severe drought and flood years of North China are studied and the years are fixed by making use of the method based on Z index.The key areas of SST affecting North China rainfall in summer are found by means of correlation analysis, which are located in the equatorial East and Middle Pacific and high and middle latitudes of North Pacific. Numerical experiments are conducted in order to study the mechanism of SST affecting North China summer rainfall in the two areas.As a result,some meaningful outcome are obtained.Besides,the possible mechanism responsible for the anomaly of North China summer rainfall is investigated. |
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| Keywords: | North China summer rainfall circulation pattern SST anomaly of North Pacific numerical experiment |
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