Characteristics of Diurnal Variations in Convection and Precipitation over the Southern Tibetan Plateau during Summer

被引：92
|
作者：
Fujinami, Hatsuki [1 ,2 ]
Nomura, Shigeyuki [3 ]
Yasunari, Tetsuzo [1 ]
机构：
[1] Nagoya Univ, Hydrospher Atmospher Res Ctr, Nagoya, Aichi 4648601, Japan
[2] Japan Sci & Technol Agcy, Kawaguchi, Saitama, Japan
[3] Japan Weather Assoc, Tokyo, Japan
来源：
SOLA | 2005年 / 1卷
关键词：
D O I：
10.2151/sola.2005-014
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
This study investigated diurnal cycles in convection and precipitation over the complex mountain-valley terrain of the southern Tibetan Plateau (TP) during the mature phase of the summer monsoon. Cloud-cover frequency (CCF) for high cloud increased after 13 LST (07 UTC) over the mountain ranges along 28.5 degrees N and 30.2 degrees N, reaching a maximum near 18 LST (12 UTC). Areas of high CCF subsequently moved towards the valley area along 29.3 degrees N; relatively high CCF persisted there until early morning. Tropical Rainfall Measuring Mission (TRMM) PR data show a nearly identical variation in rainfall frequency. Formation and development of convective-type clouds and phase differences in the diurnal cycle were strongly affected by TP topography. Possible mechanisms for convective enhancement over the southern TP are also discussed.
引用
收藏
页码：49 / 52
页数：4
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