Diurnal Variability of Precipitation Depth Over the Tibetan Plateau and Its Surrounding Regions

被引：0
|
作者：
胡亮 [1 ,2 ]
李耀东 [1 ,3 ]
高守亭 [1 ]
机构：
[1] Institute of Atmospheric Physics,Chinese Academy of Sciences
[2] Graduate University of Chinese Academy of Sciences
[3] Beijing Aviation Meteorological Institute
来源：
Advances in Atmospheric Sciences | 2010年 / 27卷 / 01期
基金：
中国国家自然科学基金;
关键词：
precipitation depth; diurnal variability; total rain; convective rain; stratiform rain;
D O I：
暂无
中图分类号：
P426.61 [普通降水];
学科分类号：
0706 ; 070601 ;
摘要：
The diurnal variability of precipitation depth over the Tibetan Plateau and its surrounding regions is investigated using nine years of Tropical Rainfall Measuring Mission(TRMM) precipitation radar(PR) measurements.The Tibetan Plateau,the plains area,and the East China Sea are selected as the focus regions in this study.The average precipitation depths(PD) are about 4.6 km,5.8 km,and 5.6 km,while convective(stratiform) PDs are about 6.6(4.5) km,7.5(5.7) km,and 6.0(5.6) km over the plateau,the plains,and the ocean region,respectively.Results demonstrate a prominent PD diurnal cycle,and its diurnal phase is generally a few hours behind the surface precipitation.The spatial variation of the PD diurnal magnitude is weaker near the coastal areas than that of surface precipitation.The height of the PD diurnal peak is around 6-7 km for convective systems and 5-6 km for stratifrom systems.The dominant afternoon diurnal peak for convective PD and the flat diurnal peak for stratiform PD over the Tibetan Plateau indicate that solar diurnal forcing is the key mechanism of the PD diurnal cycle over land.In addition,the diurnal variation is obvious for shallow and deep convective systems,but not for shallow and deep stratiform systems.
引用
收藏
页码：115 / 122
页数：8
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