Analysis and comparison of mesoscale convective systems over the Qinghai-Xizang (Tibetan) Plateau

2003 ◽  
Vol 20 (3) ◽  
pp. 311-322 ◽  
Author(s):  
Zhu Guofu ◽  
Chen Shoujun
Keyword(s):  
Tibetan Plateau ◽  
Mesoscale Convective Systems ◽  
Convective Systems ◽  
Mesoscale Convective

Analysis of mesoscale convective systems over Tibetan Plateau in summer

2006 ◽  
Vol 16 (2) ◽  
pp. 116-121
Author(s):  
Zhong-yang Guo ◽  
Xiao-yan Dai ◽  
Jian-ping Wu ◽  
Hui Lin
Keyword(s):  
Tibetan Plateau ◽  
Mesoscale Convective Systems ◽  
Convective Systems ◽  
Mesoscale Convective

scholarly journals Statistical Characteristics of Mesoscale Convective Systems Initiated over the Tibetan Plateau in Summer by Fengyun Satellite and Precipitation Estimates

2021 ◽  
Vol 13 (9) ◽  
pp. 1652
Author(s):  
Xidi Zhang ◽  
Wenqiang Shen ◽  
Xiaoyong Zhuge ◽  
Shunan Yang ◽  
Yun Chen ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Rapid Development ◽  
Mesoscale Convective Systems ◽  
Statistical Characteristics ◽  
The Tibetan Plateau ◽  
Convective Systems ◽  
Lower Cloud ◽  
Mesoscale Convective ◽  
Precipitation Estimates ◽  
High Level

In order to investigate the key characteristics of mesoscale convective systems (MCSs) initiated over the Tibetan Plateau (TP) in recent years and the main differences in circulation and environmental factors between different types of MCSs, an automatic MCS identification and tracking method was applied based on the data from China’s Fengyun satellite and precipitation estimates. In total, 8820 MCSs were found to have been initiated over the TP during the summers from 2013 to 2019, and a total of 9.3% of them were able to move eastward out of the TP (EO). The number of MCSs showed a monthly variation, with a maximum in July and a minimum in June, while most EOs occurred in June. Compared with other types of MCSs, EOs usually had a lower cloud-top temperature, a greater rainfall intensity, a longer life duration, more rapid development, larger areas of rainfall and convective clouds, longer tracks and a wider influence range, indicating that EOs are more vigorous than the other types of MCSs. The movement of MCSs is mainly due to the mid- to high-level dynamic conditions, and moisture is an essential factor in their development and maintenance.

A 10-Year Climatology of Mesoscale Convective Systems and Their Synoptic Circulations in the Southwest Mountain Area of China

2021 ◽  
Vol 22 (1) ◽  
pp. 23-41
Author(s):  
Yanan Meng ◽  
Jianhua Sun ◽  
Yuanchun Zhang ◽  
Shenming Fu
Keyword(s):  
Tibetan Plateau ◽  
Temperature Data ◽  
Mesoscale Convective Systems ◽  
The Tibetan Plateau ◽  
Contribution Rate ◽  
Indochina Peninsula ◽  
The West ◽  
Mountain Area ◽  
Convective Systems ◽  
Mesoscale Convective

AbstractHourly blackbody temperature data from the warm seasons (May–September) of 2009–18 were used to detect mesoscale convective systems (MCSs) generated in the southwest mountain area (elevation ≥ 500 m) of China. A total of 3059 MCSs were grouped into four categories (C1, C2, C3, and C4) according to their generation positions using K-means clustering. Major characteristics of the four types of MCSs and their synoptic environmental conditions were investigated. The MCSs had a peak in July and a minimum in May, and usually lasted from 3 to 21 h. The C1 MCSs generated in the northeast of the Tibetan Plateau developed faster, were largest, and had a longer lifespan. The C2 and C4 MCSs had greater intensity and were initiated in the southeast of the Tibetan Plateau and the west of the Yungui Plateau, and near the Wuling and Xuefeng Mountains, respectively. The C3 MCSs initiated in the Qinling, Ta-pa, and Wushan Mountains were smallest. The C1 and C2 MCSs contributed more than 30% to total precipitation, which was more than the C3 and C4 MCSs (<25%), and the contribution rate of MCSs to short-duration heavy rainfall affected by local MCSs was over 60%. Composite synoptic circulations of the four types of MCSs showed several factors, including the locations and intensities of cyclones in the Bay of Bengal and high pressure in the Indochina Peninsula in the low-to-middle troposphere, and vortexes or southwesterly winds in the low-level troposphere, regulate the location and intensity of convection.

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