SODAR observations of inertia- gravity waves in the atmospheric boundary layer during the passage of tropical cyclone

被引：10
|
作者：
Kumar, K. Niranjan [1 ]
Rao, Ch. Kanaka [2 ]
Sandeep, A. [3 ]
Rao, T. N. [3 ]
机构：
[1] Indian Inst Sci, Divecha Ctr Climate Change, Bangalore 560012, Karnataka, India
[2] Sri YN Coll, Dept Elect, Narasapuram, India
[3] Natl Atmospher Res Lab, Dept Space, Gadanki, India
来源：
ATMOSPHERIC SCIENCE LETTERS | 2014年 / 15卷 / 02期
关键词：
SODAR; inertia-gravity waves; tropical cyclones; SPIRAL BANDS; GEOSTROPHIC ADJUSTMENT; ANGULAR-MOMENTUM; HURRICANE; VORTEX;
D O I：
10.1002/asl2.478
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
This study reports characteristics of inertia-gravity waves (IGWs) in the atmospheric boundary layer during the passage of Tropical Cylone-03B, using the Doppler Sound Detection and Ranging (SODAR) observations at the Indian tropical station of Gadanki (13.45 degrees N, 79.2 degrees E; near the east coast of India). Wavelet analysis of horizontal winds indicates significant wave motion (60h) near the characteristic inertial period. The hodograph analysis of the filtered winds shows an anti-cyclonic turning of horizontal wind with height and time, indicating the presence of IGW. This study finds important implications in boundary layer dynamics during the passage of tropical cyclones.
引用
收藏
页码：120 / 126
页数：7
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