Dominant Large-Scale Atmospheric Circulation Systems for the Extreme Precipitation over the Western Sichuan Basin in Summer 2013
Joint Authors
Hu, Yamin
Zhai, Panmao
Liu, Lihong
Chen, Yang
Liu, Yanju
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-08-25
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The western Sichuan Basin (WSB) is a rainstorm center influenced by complicated factors such as topography and circulation.
Based on multivariable empirical orthogonal function technique for extreme precipitation processes (EPP) in WSB in 2013, this study reveals the dominant circulation patterns.
Results indicate that the leading modes are characterized by “Saddle” and “Sandwich” structures, respectively.
In one mode, a TC from the South China Sea (SCS) converts into the inverted trough and steers warm moist airflow northward into the WSB.
At the same time, WPSH extends westward over the Yangtze River and conveys a southeasterly warm humid flow.
In the other case, WPSH is pushed westward by TC in the Western Pacific and then merges with an anomalous anticyclone over SCS.
The anomalous anticyclone and WPSH form a conjunction belt and convey the warm moist southwesterly airflow to meet with the cold flow over the WSB.
The configurations of WPSH and TC in the tropic and the blocking and trough in the midhigh latitudes play important roles during the EPPs over the WSB.
The persistence of EPPs depends on the long-lived large-scale circulation configuration steady over the suitable positions.
American Psychological Association (APA)
Hu, Yamin& Zhai, Panmao& Liu, Lihong& Chen, Yang& Liu, Yanju. 2015. Dominant Large-Scale Atmospheric Circulation Systems for the Extreme Precipitation over the Western Sichuan Basin in Summer 2013. Advances in Meteorology،Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1052797
Modern Language Association (MLA)
Hu, Yamin…[et al.]. Dominant Large-Scale Atmospheric Circulation Systems for the Extreme Precipitation over the Western Sichuan Basin in Summer 2013. Advances in Meteorology No. 2015 (2015), pp.1-10.
https://search.emarefa.net/detail/BIM-1052797
American Medical Association (AMA)
Hu, Yamin& Zhai, Panmao& Liu, Lihong& Chen, Yang& Liu, Yanju. Dominant Large-Scale Atmospheric Circulation Systems for the Extreme Precipitation over the Western Sichuan Basin in Summer 2013. Advances in Meteorology. 2015. Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1052797
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1052797