| 1月份黑潮区域海温异常与我国夏季降水的关系 |
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| 引用本文： | 李忠贤,孙照渤.1月份黑潮区域海温异常与我国夏季降水的关系[J].南京气象学院学报,2004,27(3):374-380. |
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| 作者姓名： | 李忠贤 孙照渤 |
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| 作者单位： | 南京气象学院,气象灾害和环境变化重点开放实验室,江苏,南京,210044 |
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| 基金项目： | 国家自然科学基金资助项目(40175023) |
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| 摘 要： | 分析了1月份黑潮区域海表温度异常与我国夏季(6—8月平均)降水的相关关系及其与夏季东亚大气环流的关系。结果表明：1月份黑潮区域海温偏高(低)时，乌拉尔山附近和雅库茨克附近的阻高加强(减弱)，在这两个阻高之间的低压槽加深(减弱)，西北太平洋副热带高压加强(减弱)、西伸(东撤)，亚洲夏季风明显偏弱(强)，导致副热带高压西侧的暖湿气流输送到长江中下游地区(我国北方地区)，从而使长江中下游地区的夏季降水增多(减少)。
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| 关 键 词： | 黑潮区域海温异常 中国夏季降水 西北太平洋副热带高压 |
| 文章编号： | 1000-2022(2004)03-0374-07 |
Relation between January Kuroshio SSTA and Summer Rainfall in China |
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| LI Zhong-xian,SUN Zhao-bo tal Variation,NIM,Nanjing,China.Relation between January Kuroshio SSTA and Summer Rainfall in China[J].Journal of Nanjing Institute of Meteorology,2004,27(3):374-380. |
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| Authors: | LI Zhong-xian SUN Zhao-bo tal Variation NIM Nanjing China |
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| Institution: | LI Zhong-xian,SUN Zhao-bo tal Variation,NIM,Nanjing210044,China) |
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| Abstract: | The relationship is analyzed of January Kuroshio Region SSTA with summer precipitation in China and general circulation over East Asia.Results indicate that in the higher(lower) Kuroshio SSTA years,the blocking highs over the Ural mountains and Yakutsk become stronger(weaker),the low pressure trough between the two blocking highs turns deeper(shallower).At the same time,the Western Pacific subtropical high strengthens and stretches westwards(withdraws eastwards) and the Asian summer monsoon is obviously stronger(weaker).As a result,the confluence region of the cold/dry air from mid-high latitudes and the warm/wet air from the west of subtropical high locates at the mid-lower reaches of the Yangtze River(North China) and the summer rainfall in the above districts increases(decreases) correspondly. |
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| Keywords: | Kuroshio SSTA summer rainfall in China western Pacific subtropical high |
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