| 青藏高原春夏季对流异常及其对西太平洋副高的影响 |
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| 引用本文： | 林建,何金海.青藏高原春夏季对流异常及其对西太平洋副高的影响[J].南京气象学院学报,2000,23(3):346-355. |
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| 作者姓名： | 林建 何金海 |
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| 作者单位： | 1. 国家气象中心气象台,北京,100081
2. 南京气象学院大气科学系,南京,210044 |
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| 基金项目： | 国家攀登项目!( B)“青藏高原地气物理过程及其对气候变化影响的研究”资助 |
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| 摘 要： | 高原冬春季净辐射多寡可以显著影响高原地区大气环流季节转换进程和后期高原对流活动。净辐射偏多，初夏高原同低纬度之间温度梯度反转时间提前，高原对活跃，夏季高原主体对流异常，可以通过辐散环流造成西太平洋异常的下沉运动，影响副高的强度、南北位置和西伸程度，最终导致夏季降水的异常分析。
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| 关 键 词： | 青藏高原净辐射 对流异常 大气环流 |
| 修稿时间： | 1999-11-19 |
THE ANOMALOUS CONVECTION OVER THE TIBETAN PLATEAU IN SPRING AND SUMMER AND ITS EFFECT ON THE WESTERN PACIFIC SUBTROPICAL HIGH |
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| Lin Jian,He Jinhai.THE ANOMALOUS CONVECTION OVER THE TIBETAN PLATEAU IN SPRING AND SUMMER AND ITS EFFECT ON THE WESTERN PACIFIC SUBTROPICAL HIGH[J].Journal of Nanjing Institute of Meteorology,2000,23(3):346-355. |
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| Authors: | Lin Jian He Jinhai |
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| Abstract: | The net radiation in winter and spring h as significant effect on the succeeding thermal convection and seasonal evolution of general circulation over the Tibetan Plateau. The more the net radiation in s pring over the Plateau, the earlier the reversal of the meridional temperature g radient between the Plateau and low-latitudes in early summer, resulting in the more active convection over the Plateau.Strong convection over the central Plat eau in summer leads to the strengthened subsidence in western Pacific, which is responsible for the enhancement and the westward extension of ridge point as wel l as the maintenance of western Pacific subtropical high to the south of the Yan gtze River. As a result, the anomalous heavy rainfall takes place in the low-mi d reaches of the Yangtze River. |
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| Keywords: | net radiation over the Tibetan Plateau ano malous convection western Pacific subtropical high summer rainfall |
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