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A study of heavy precipitation events in Taiwan during 10-13 August, 1994: mesoscale model simulationsHeavy rainfall occurred over the western side of Taiwan's complex terrain from August 10 to 13, 1994 after Typhoon Doug moved northward from the East China Sea into Taiwan and on towards the Yellow Sea. On August 10, most of the rainfall fell over sloped areas. The heaviest daily rainfall totals were in excess of 200 mm over southwestern as well as central Taiwan. However, not much rainfall occurred over northern Taiwan. The lack of rainfall over northern Taiwan also occurred on August 11, 12 and 13. The larger rainfall amounts shifted westward from the sloped areas on August 10 toward lower terrain on August 11. On August 12 and 13, most of the higher rainfall amounts were found over the coastal area in southwestern Taiwan. Notably, about 300 to 400 mm per day fell over the coastal area in southwest Taiwan on August 12 and 13. The distribution of rainfall amount was different on August 10 and 11 (termed as Case 1) compared to August 12 and 13 (termed as Case 2). The environmental situation and precipitation characteristics are analyzed using EC/TOGA data, ground-based radar data, surface rainfall patterns, surface wind data, and upper air soundings. Chen at al. (2001) also categorized the precipitation pattern into two types, propagating and quasi-stationary. For the propagating type of precipitation, rainrates increased or remained the same as systems went from the plains to mountainous regions. With the quasi-stationary type of precipitation, however, rainrates decreased as precipitation propagated across the plains and into the mountains. The focus of this study is to understand what causes the h1aher amounts of rainfall over Taiwan, and what factors influence where the higher amounts of rainfall will occur, over sloped areas or over coastal areas.
Document ID
20010076247
Acquisition Source
Headquarters
Document Type
Preprint (Draft being sent to journal)
Authors
Tao, W.-K. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Chen, C.-S. (National Central Univ. Chung-Li, Taiwan, Province of China)
Jia, Y. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Baker, D. (Austin Coll. Sherman, TX United States)
Lang, S. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Wetzel, P. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Lau, K.-M. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Kuo, Y.-H. (National Center for Atmospheric Research Boulder, CO United States)
Dudhia, J. (National Center for Atmospheric Research Boulder, CO United States)
Starr, David O'C.
Date Acquired
September 7, 2013
Publication Date
January 15, 2001
Subject Category
Meteorology And Climatology
Report/Patent Number
MP-12
Meeting Information
Meeting: MM5 Users Workshop
Location: Boulder, CO
Country: United States
Start Date: June 25, 2001
End Date: June 27, 2001
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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