| 我国中部和南部地区降水再循环率评估 |
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| 引用本文： | 康红文,谷湘潜,祝从文,Paul Whitfield.我国中部和南部地区降水再循环率评估[J].大气科学,2004,28(6):892-900. |
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| 作者姓名： | 康红文 谷湘潜 祝从文 Paul Whitfield |
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| 作者单位： | 1.中国气象科学研究院,北京,100081 |
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| 基金项目： | 国家自然科学基金资助项目40075024 、国家863计划2002AA135360和科研院所社会公益研究专项资金项目2002DIA20013共同资助 |
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| 摘 要： | 利用1976～1995 年20 年NCEP 再分析资料,对我国中、南部地区降水再循环率进行了评估,发现长江上游总的降雨有20%来自我国中、南部地区水汽蒸发,长江中下游总的降雨则有40%来自这一地区. 降水再循环率有很强的季节变化规律,8、9、10三个月的降水再循环率最高,达四成左右,而5、6、7三个月的降水再循环率不到四分之一.蒸发率和降水再循环率在20年中均有增加的趋势,这可能与气候变暖有关.
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| 关 键 词： | 降水 再循环 水汽输送 |
| 文章编号： | 1006-9895(2004)06-0892-09 |
Precipitation Recycling in Southern and Central China |
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| KANG Hong-Wen,GU Xiang-Qian,ZHU Chong-Wen and Paul Whitfield.Precipitation Recycling in Southern and Central China[J].Chinese Journal of Atmospheric Sciences,2004,28(6):892-900. |
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| Authors: | KANG Hong-Wen GU Xiang-Qian ZHU Chong-Wen and Paul Whitfield |
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| Abstract: | An evaluation of precipitation recycling in southern and central China was made using 20-year NCEP reanalysis data. It is found that 20% of the precipitation in the upper reaches of the Yangtze River and 40% of the precipitation in the middle and lower reaches of the Yangtze River come from the evaporation within the research region. The precipitation recycling varies obviously with seasons: it has the highest value of about 0.4 in August, September, and October, while it does not reach a quarter in May, June, and July. Both Evaporation and precipitation recycling increase during the 20 years, which may be the results of climate warming. |
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| Keywords: | precipitation recycle moisture transport NCEP reanalysis data |
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