Percentage occurrence of global tilted deep convective clouds under strong vertical wind shear

被引:9
|
作者
Sharma, Neerja [1 ]
Varma, Atul Kumar [1 ]
Liu, Guosheng [2 ]
机构
[1] ISRO, Space Applict Ctr, Atmospher & Ocean Sci Grp, Ahmadabad, India
[2] Florida State Univ, Dept Meteorol, Tallahassee, FL USA
关键词
Environmental vertical wind shear; Deep convective clouds; Rainfall; PRECIPITATION; TROPICS; RADAR; RAIN; VARIABILITY; AEROSOLS; TRMM;
D O I
10.1016/j.asr.2021.12.040
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
The percentage occurrence of titled deep convective clouds (DCCs) is rarely examined but it is crucial to overcome the challenges of precise measurement of rainfall intensity and location during dreadful weather events. Present study is carried out with this objective and analysed 2451 globally distributed DCCs identified by Ku-band (13.6 GHz) radar reflectivity profiles of Dual-frequency Precipitation Radar aboard Global Precipitation Measurement mission under varying conditions of environmental vertical wind shear (EVWS) during 2018. Globally (tropics) 60.68% (55.29%) of DCCs that produced intense rain (>50 mm/hr) are strengthened under strong EVWS and thus may have possibility of vertically tilted structure. Substantial 60.49% of DCCs that developed under strong EVWS grow deeper (up to 12 km) in atmosphere. Statistics on the global distribution of DCCs developed in strong EVWS with different categories of rainfall and cloud height would be an important source of information for precise assessment of rainfall distribution, especially during extreme weather. (C) 2021 COSPAR. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:2433 / 2442
页数:10
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