Relation between rainfall duration and diurnal variation in the warm season precipitation over central eastern China

被引：285
|
作者：
Yu, Rucong
Xu, Youping
Zhou, Tianjun
Li, Jian
机构：
[1] China Meteorol Adm, State Key Lab Severe Weather, Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China
[2] Chinese Acad Sci, State Key Lab Atmospher Sci & Geophys Fluid Dynam, Inst Atmospher Phys, Beijing 100029, Peoples R China
[3] Chinese Acad Sci, Grad Sch, Beijing 100029, Peoples R China
来源：
GEOPHYSICAL RESEARCH LETTERS | 2007年 / 34卷 / 13期
关键词：
D O I：
10.1029/2007GL030315
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
[1] Using hourly station rain-gauge data during 1991-2004, we studied the relation between rainfall duration and diurnal variation during the warm season (May to September) over the central eastern China (105-120 degrees E, 26-36 degrees N). Our result shows that more than 60% of the total rainfall in the central eastern China comes from long-duration rainfall events (an event that lasts longer than 6 hours). The long-duration rainfall events tend to have their maximum hourly rainfall around early morning, while short-duration rainfall events (an event of 1-3 hours in duration) have their peak rainfall around late afternoon. This contrast explains the two peaks in the diurnal variation of averaged precipitation over the central eastern China shown in previous studies.
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页数：4
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