| 韶关市近50年强降水频数统计及周期分析 |
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| 引用本文： | 李丽.韶关市近50年强降水频数统计及周期分析[J].广东气象,2003(3):21-23. |
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| 作者姓名： | 李丽 |
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| 作者单位： | 韶关市气象台,广东,韶关,512026 |
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| 摘 要： | 利用韶关市近50年降水资料,对逐日降水量R24（20～20时）≥50．0mm的强降水次数进行统计分析,结果表明韶关暴雨及以上强降水主要集中在多水期的3～7月,其中5、6月份为最多,这与韶关的自然季节降水特点是相吻合的;从50年代至90年代,各年代大暴雨和暴雨分别呈现出偏少．正常-正常-偏少-偏多和偏多～正常-偏少～偏少～偏多的演变趋势;R24≥50．0mm的强降水总次数及历年5、6月份R24≥50．0mm的强降水次数存在周期变化。
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| 关 键 词： | 韶关市 强降水 频数统计 周期分析 演变趋势 周期变化 |
| 文章编号： | 1007-6190(2003)03-0021-03 |
Statistical And Periodic Analysis on Heavy Precipitation Frequency in Shaoguan in Recent 50 Years |
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| Li Li.Statistical And Periodic Analysis on Heavy Precipitation Frequency in Shaoguan in Recent 50 Years[J].Journal of Guangdong Meteorology,2003(3):21-23. |
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| Authors: | Li Li |
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| Abstract: | Precipitation data in Shaoguan in the recent 50 years were used to statistically analyze the heavy precipitation occurrences for daily rainfall R24 (20 - 20h) over 50.0mm. The result indicated that the heavy rain occurrences in Shaoguan were concentrated in rain - rich period from March to July, among which the May and June were the rain peak period. This is in good match with natural seasonal precipitation characteristics in Shaoguan. From 50' s to 90' s, the decadal trend in evolution of heavy torrential rain and torrential rain occurrences appeared respectively as "less than normal" - "normal" - "normal" - "less than normal" - " more than normal", and "more than normal - less than normal - less than normal - more than normal - more than normal ; there existed periodic variation of total number of heavy precipitation occurrences for R24 over 50.0mm, and the number of those in May and June of these years. |
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| Keywords: | Torrential Rain Frequency Variance Analysis |
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