An analysis of Typhoon Chanthu in June 2004 with focus on the impact on Thailand
Journal article
Authors/Editors
Strategic Research Themes
No matching items found.
Publication Details
Author list: Wangwongchai A., Zhao S., Zeng Q.
Publisher: Springer
Publication year: 2010
Journal: Advances in Atmospheric Sciences (0256-1530)
Volume number: 27
Issue number: 1
Start page: 14
End page: 32
Number of pages: 19
ISSN: 0256-1530
eISSN: 1861-9533
Languages: English-Great Britain (EN-GB)
View in Web of Science | View on publisher site | View citing articles in Web of Science
Abstract
In this paper, the influence of Typhoon Chanthu on Thailand during June 2004 was studied. Several major features have been revealed. (1) Chanthu formed and developed in favorable large-scale conditions. A continental high-pressure system covered most of China and merged with the West Pacific Subtropical High to become a west-east oriented high-pressure band, which was responsible for the westward movement of the typhoon. (2) There existed a stationary and active ITCZ, which was the preferred formation area of the typhoon. The ITCZ extended from the Bay of Bengal, through the Indo-China Peninsula and the South China Sea, to the western Pacific. Chanthu formed in the ITCZ and moved almost directly along it. (3) The moisture sources differed during the various stages of development. In the earlier stages, water vapor came largely from the South China Sea but in later stages, the source was mainly from the Bay of Bengal. The rich water vapor supply explains the long-lived effects of Chanthu and its remnants after landfall. (4) Cyclonic circulation remained following the landfall of Chanthu, as did a weak warm core in the upper-middle troposphere, which was likely caused by the release of latent heat from convective condensation. Due to the ample moisture supply from the ITCZ, convective activity was still very active after landfall. (5) Subgrid-scale convective systems played an important role in the kinetic energy budget. In addition, numerical simulations show that, among various cumulus convective parameterization schemes, the Betts-Miller-Janjic scheme seemed to be the best in the summer season. ฉ Chinese National Committee for International Association of Meteorology and Atmospheric Sciences, Institute of Atmospheric Physics, Science Press and Springer Berlin Heidelberg 2010.
Keywords
Heavy rainfall, ITCZ, Typhoon
Contact Information