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山东省汛期小时降水过程时空分布特征
董旭光, 邱粲, 曹洁
(山东省气候中心 济南,250031)
Spatiotemporal distribution characteristics of Short-duration and long-duration precipitation in flood season in Shandong Province
Dong Xuguang, qiu can, cao jie
(shandong climate center)
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投稿时间:2017-02-07    修订日期:2017-09-19
中文摘要: 利用山东省74个气象站1961~2012年逐时降水观测数据,分析了山东省汛期(5~9月)短历时和持续性降水过程的时空分布特征。结果表明:(1)过程降水量和过程历时显著增大使得山东省汛期总降水量略有增加,持续性降水过程次数、过程降水量、过程历时的增加对总降水量增加的贡献最大。(2)短历时总降水量以鲁中山区、鲁东南地区最多,鲁东南沿海、半岛东部持续性总降水量最多;短历时过程降水量、平均雨强以鲁东南向西北方向经鲁中山区至德州一带最大,持续性过程降水量、平均雨强在半岛东部和鲁东南部分地区最大。(3)短历时峰值雨强以鲁中山区周边地区较大,持续性峰值雨强以鲁南、鲁东南、半岛东部较大。(4)鲁中山区、鲁南及半岛个别地区短历时降水一般开始于午后(13-18时),鲁中山区周边及半岛沿海一带多以夜雨为主,持续性降水过程开始时间多出现在夜间。
Abstract:Based on the hourly precipitation data at 74 weather stations in Shandong Province from 1961 to 2012, spatiotemporal distribution characteristics of Short-duration and long-duration precipitation in flood season in Shandong Province from May to September were analyzed. The results showed that: (1) Total precipitation in flood season in Shandong were slightly increased by insignificantly increasing of precipitation and duration in precipitation process. Contribution to total precipitation increasing were most by adding in precipitation frequencies, precipitation and duration of short-duration. (2) Total precipitation of short-duration were most in middle mountains and southeast Shandong. Total precipitation of long-duration were most in coastal area in southeast Shandong and east of peninsula. Precipitation and average precipitation intensity in process of short-duration were maximum from southeast Shandong to Dezhou area. Precipitation and average precipitation intensity in process of long-duration were maximum in east of peninsula and part area of southeast Shandong. (3) Peak precipitation intensity of short-duration were greater around middle mountain, but its of long-duration were bigger in south, southeast and east peninsula Shandong. (4) Precipitation of short-duration began in afternoon commonly in middle mountain, south and a few area of peninsula Shandong. Precipitation mainly occurred in the evening around middle mountain and coastal peninsula. Precipitation of long-duration most began at night.
文章编号:201702070054     中图分类号:    文献标志码:
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引用文本:
董旭光,邱粲,曹洁,2018.[en_title][J].Meteor Mon,():-.
Dong Xuguang,qiu can,cao jie,2018.Spatiotemporal distribution characteristics of Short-duration and long-duration precipitation in flood season in Shandong Province[J].Meteor Mon,():-.