| 华南锋面与暖区暴雨个例对比分析 |
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| 引用本文： | 赵玉春,李泽椿,肖子牛.华南锋面与暖区暴雨个例对比分析[J].气象科技,2008,36(1):47-54. |
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| 作者姓名： | 赵玉春 李泽椿 肖子牛 |
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| 作者单位： | 1. 武汉暴雨研究所武汉中心气象台,武汉,430074
2. 国家气象中心,北京,100081 |
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| 基金项目： | 中国气象局气候变化专项基金 |
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| 摘 要： | 分析了1961～1999年亚洲热带近海海温与云南降水的关系.通过研究云南夏季降水对近海海温异常的响应,发现云南初夏的降水与亚洲热带近海海温有明显的负相关关系,这种降水减少海温正距平的情况在北印度洋西部和阿拉伯海表现比孟加拉湾和南海更显著,但是在盛夏相关关系不显著.同时发现云南西南部的夏季降水与前期盂加拉湾海温有显著的正相关,而与其它海域的海温相关不显著.滇东南的夏季降水只与前期南海的海温有显著的正相关.
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| 关 键 词： | 旱涝 海温距平 相关系数 |
| 收稿时间： | 2006-10-30 |
| 修稿时间： | 2007-05-29 |
Comparison Analysis of South China Front and Warm Area Heavy Rain Systems in June 2006 |
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| Zhao Yuchun,Li Zechun and Xiao Ziniu.Comparison Analysis of South China Front and Warm Area Heavy Rain Systems in June 2006[J].Meteorological Science and Technology,2008,36(1):47-54. |
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| Authors: | Zhao Yuchun Li Zechun and Xiao Ziniu |
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| Abstract: | A continuous heavy rain process occurred in South China from 17 to 24 June 2006, during which there existed two rain bands, one in the north and the other in the south. The north rain band (over the north and central part of Fujian Province) was resulted from frontal systems and the south rain band (over the east and central part of Guangdong Province) was in the warm areas before a front. The double rain band phenomenon has attracted much attention of Chinese meteorologists. In order to investigate the causes of frontal and warm area heavy rains and deepen the knowledge of the two kind heavy rains, the heavy rain case is analyzed in details as a typical example of the double rain band event with hourly surface rainfall and 6 hour NCEP reanalysis data. The main physical differences between the frontal and warm area heavy rains are revealed. It is found that there exist obvious differences not only in the meso scale rain mass activities, dynamic structure, instability mechanisms, and vertical heating profiles between Meiyu front and warm area heavy rain systems, but also in the moisture transportation, meso scale environment and vertical circulation related to heavy rainfall. These differences may be the reason why the heavy rainfall in warm areas before a front is difficult to simulate and forecast. |
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| Keywords: | Meiyu front in South China heavy rainfall convective instability upper/lower level jet |
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