| 长江上游洪涝暴雨环流形势中期演变趋势分析 |
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| 引用本文： | 郁淑华,骆红,芮良生.长江上游洪涝暴雨环流形势中期演变趋势分析[J].成都信息工程学院学报,1990(1). |
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| 作者姓名： | 郁淑华 骆红 芮良生 |
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| 作者单位： | 四川省气象科研所
(郁淑华，骆红)，四川省气象科研所(芮良生) |
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| 摘 要： | 本文通过对1980年以来长江上游10次洪涝过程的500hpa环流形势分析,并用车比雪夫多项式对500hpa高度场进行展开,研究了各类洪涝过程的中期演变特征,发现代表不同洪涝过程环流形势变化的不同的车氏系数值都有明显的特征变化,结合欧洲中心中期数值预告96小时500hpa高度场的车氏系数分析,可为洪涝暴雨的中期预报提供一种新的思路。
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| 关 键 词： | 气候学 暴雨洪水 车氏系数 分析预报 |
A QUANTITATIVE ANALYSIS ON THE EVOLUTION OF 500hpa CIRCULATION OF TREMENDOUSLY HEAVY RAIN IN UPPER REACHES OF THE YANGTZE RIVER |
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| Yu Shuhua Luo Hong Rui Liangsheng.A QUANTITATIVE ANALYSIS ON THE EVOLUTION OF 500hpa CIRCULATION OF TREMENDOUSLY HEAVY RAIN IN UPPER REACHES OF THE YANGTZE RIVER[J].Journal of Chengdu University of Information Technology,1990(1). |
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| Authors: | Yu Shuhua Luo Hong Rui Liangsheng |
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| Abstract: | Based on the analysis of 500hpa geopotential fields ol ten cases of flash floods in upper reaches of the Yangtze river during 1980-1988 and the analysis of evolution feature of each type of flash flood process in medium range by Cbebyshev polynomial, it is found that the Chebyshev polynomial coefficients have obvious changes corresponding circulation evolutions. Cooperating with 500hpa geopotential field forecasted by European Medium Forecast Center in advance of 96 hours, the results provide some new idea for operational forecasting tremendously heavy rain in medium range. |
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| Keywords: | Climatology Flash flood Chebyshev polynomial Weather analysist Forecasting |
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