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Proceedings Paper

Climatic features of SCS summer monsoon onset and its possible mechanism
Author(s): Jinhai He; Haiming Xu; Lijuan Wang; Bing Zhou
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Paper Abstract

The high quality dataset from the South China Sea (SCS) Monsoon Experiment and 40-year NCEP/NCAR reanalysis data are used to investigate the large scale features and abrupt change in meteorological elements during the onset of the SCS summer monsoon. It is found that the SCS summer monsoon establishment is characterized by the South Asian High migrating swiftly from the eastern side of Philippines to the northern part of Indo-China Peninsula and the enhancement of the Bay of Bengal trough and equatorial westerly over the Indian Ocean associated with the equatorial westerly expanding towards northeastward, and followed by the mid-low latitude interaction and continuous retreat eastward of the western Pacific subtropical high. Numerical results reveal that the Indial Peninsula acts as a critical role for the enhancement of the Bay of Bengal trough with a cyclonic difference circulation excited to the east side of the peninsula through ground sensible heating in such a way that the SCS summer monsoon occurs prior to the Indian summer monsoon.

Paper Details

Date Published: 14 April 2003
PDF: 10 pages
Proc. SPIE 4899, Atmospheric and Oceanic Processes, Dynamics, and Climate Change, (14 April 2003); doi: 10.1117/12.466689
Show Author Affiliations
Jinhai He, Nanjing Institute of Meteorology (China)
Haiming Xu, Nanjing Institute of Meterology (China)
Lijuan Wang, Nanjing Institute of Meterology (China)
Bing Zhou, Nanjing Institute of Meterology (China)

Published in SPIE Proceedings Vol. 4899:
Atmospheric and Oceanic Processes, Dynamics, and Climate Change
Zhaobo Sun; Fei-Fei Jin; Toshiki Iwasaki, Editor(s)

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