Cause Analysis on Eastward Movement of Southwest China Vortex and Its Induced Heavy Rainfall in South China
Joint Authors
Chen, Yongren
Li, Yueqing
Zhao, Tianliang
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-22, 22 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-03-17
Country of Publication
Egypt
No. of Pages
22
Main Subjects
Abstract EN
The movement of southwest China vortex (SWV) and its heavy rainfall process in South China had been investigated during June 11–14, 2008.
The results show that under the steering of upper-level jet (ULJ) and mid-level westerly trough, SWV moved eastward from southern Sichuan Plateau, across eastern Yunnan-Guizhou Plateau to South China, forming an obvious heavy rain belt.
SWV developed in the large storm-relative helicity (SRH) environment, as environmental wind field continuously transferred positive vorticity to it to support its development.
The thermodynamic structures of distinctive warm (cold) advections in front (rear) of the SWV movement are also important factors for the SWV evolutions with a southwest low-level jet (LLJ) and vertical wind shear.
SWV development was associated with the distributions of negative MPV1 (the barotropic item of moist potential vorticity) and positive MPV2 (the baroclinic item of it).
The MPV1 and MPV2 played the dominant role in the formation and the evolution of SWV, respectively.
The mesoscale convective systems (MCSs) frequently occurred and persisted in water vapor convergence areas causing the severe heavy rainfall.
The areas of high moist helicity divergence and heavy rainfall are consistent, and the moist helicity divergence could be a good indicator for heavy rainfall occurrence.
American Psychological Association (APA)
Chen, Yongren& Li, Yueqing& Zhao, Tianliang. 2015. Cause Analysis on Eastward Movement of Southwest China Vortex and Its Induced Heavy Rainfall in South China. Advances in Meteorology،Vol. 2015, no. 2015, pp.1-22.
https://search.emarefa.net/detail/BIM-1052745
Modern Language Association (MLA)
Chen, Yongren…[et al.]. Cause Analysis on Eastward Movement of Southwest China Vortex and Its Induced Heavy Rainfall in South China. Advances in Meteorology No. 2015 (2015), pp.1-22.
https://search.emarefa.net/detail/BIM-1052745
American Medical Association (AMA)
Chen, Yongren& Li, Yueqing& Zhao, Tianliang. Cause Analysis on Eastward Movement of Southwest China Vortex and Its Induced Heavy Rainfall in South China. Advances in Meteorology. 2015. Vol. 2015, no. 2015, pp.1-22.
https://search.emarefa.net/detail/BIM-1052745
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1052745