[1]王莉萍,王维国,张建忠.我国主要流域降水过程时空分布特征分析[J].自然灾害学报,2018,(02):161-173.[doi:10.13577/j.jnd.2018.0219]
 WANG Liping,WANG Weiguo,ZHANG Jianzhong.Analysis on spatial and temporal distribution characteristics of precipitation processes over main river basin in China[J].,2018,(02):161-173.[doi:10.13577/j.jnd.2018.0219]
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我国主要流域降水过程时空分布特征分析
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
期数:
2018年02期
页码:
161-173
栏目:
出版日期:
2018-04-28

文章信息/Info

Title:
Analysis on spatial and temporal distribution characteristics of precipitation processes over main river basin in China
作者:
王莉萍 王维国 张建忠
国家气象中心, 北京 100081
Author(s):
WANG Liping WANG Weiguo ZHANG Jianzhong
National Meteorological Center, Beijing 100081, China
关键词:
评估方法流域降水过程时空演变年变化月变化
Keywords:
evaluation methodbasinprecipitation processspace-time evolutionannual changemonthly variation
分类号:
P426.6;X43
DOI:
10.13577/j.jnd.2018.0219
摘要:
应用改进的中国区域降水过程综合强度评估方法,提取了1961—2016年珠江、长江中下游、太湖、淮河、黄河、海河、松辽等七个主要流域的降水过程。统计各流域降水过程次数的时空演变特征以及降水过程强度等级的年变化和月变化规律,研究发现:珠江流域、长江中下游和太湖流域年平均降水过程次数较其他流域明显偏多;珠江流域、长江中下游和松辽流域过程平均持续时间较其他流域明显偏长;珠江流域极端和特强降水过程出现概率最高,太湖流域和松辽流域次之;1961年以来各流域降水过程强度明显增强,特强和强降水过程均明显增多;珠江流域、长江中下游降水过程次数高峰期在4-5月,太湖流域、淮河流域、黄河流域、海河流域在7-8月,松辽流域在6-8月;珠江流域、长江中下游、太湖流域极端和特强降水过程峰值出现在6月;淮河流域、黄河流域、海河流域和松辽流域峰值出现在7月。此外,文中还将流域性大洪水与同期出现的降水过程匹配、比对和分析,总结出引起流域性洪水的降水过程特征。上述研究成果可直接应用于气象预报与气象服务业务,为我国流域性洪水灾害的提前预警评估和防御提供重要决策依据。
Abstract:
In this paper, using improved method for evaluating the comprehensive strength of regional precipitation processes in China, the precipitation processes over major river basin such as the Pearl River, the middle and lower reaches of Yangtze River, Taihu Lake, Huaihe River, Yellow River, Haihe River and Songliao River are extracted during 1961-2016. By statistics of the number of precipitation processes space-time evolution characteristics and intensity level of change and change rule over each river basin, the study suggests that the number of average annual precipitation processes of the Pearl River basin, the middle and lower reaches of Yangtze River and Taihu Lake basin is noticeably more than other river basin. The average processes duration of the Pearl River basin, the middle and lower reaches of Yangtze River, Songliao River basin is noticeably more than other river basin. The extreme and strong precipitation processes over Pearl River basin are in the highest probability, and the Taihu Lake basin and Songliao River basin take second and third place. The basin precipitation processes intensity enhanced obviously and more strong and strong precipitation processes are significantly increased since 1961. The peak number of precipitation processes of Pearl River basin, the middle and lower reaches of Yangtze River is from April to May, the Taihu River basin, Huaihe River basin, Yellow River basin and Haihe River basin is from July to August, the Songliao River basin is from June to August. The peak of extreme and more strong precipitation processes of Pearl River basin, the middle and lower reaches of Yangtze River basin and Taihu Lake basin is in June. The Huaihe River, Yellow River, Haihe River basin and Songliao River basin is in July. In addition, the paper also matches basin flood with the precipitation processes over the same period and sums up precipitation processes characteristics causing basin flood by comparison and analysis. The study can be directly applied to meteorological service business and provides important decision basis for our basin flood disaster early warning assessment and defense.

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备注/Memo

备注/Memo:
收稿日期:2017-03-23;改回日期:2017-04-25。
基金项目:中国气象局决策气象服务专项
作者简介:王莉萍(1981-),女,高级工程师,硕士,主要从事决策气象服务和气象灾害预警评估.E-mail:wanglip@cma.gov.cn
更新日期/Last Update: 1900-01-01