Mesoscale processes for super heavy rainfall of Typhoon Morakot (2009) over Southern Taiwan

文化大學機構典藏 CCUR > 理工學院 > 理學院 > 地質系 > 期刊論文 > Item 987654321/24116

請使用永久網址來引用或連結此文件: https://irlib.pccu.edu.tw/handle/987654321/24116

題名:	Mesoscale processes for super heavy rainfall of Typhoon Morakot (2009) over Southern Taiwan
作者:	Lin, CY (Lin, C.-Y.) Hsu, HM (Hsu, H.-m.) Sheng, YF (Sheng, Y.-F.) Kuo, CH (Kuo, C.-H.) Liou, YA (Liou, Y.-A.)
貢獻者:	Dept Geol
關鍵詞:	TROPICAL CYCLONE PART I POTENTIAL VORTICITY CONVECTIVE SYSTEMS MU RADAR HURRICANE PASSAGE WAVES MECHANISMS SIMULATION
日期:	2011
上傳時間:	2013-01-31 10:57:09 (UTC+8)
摘要:	Within 100 h, a record-breaking rainfall, 2855 mm, was brought to Taiwan by typhoon Morakot in August 2009 resulting in devastating landslides and casualties. Analyses and simulations show that under favorable large-scale situations, this unprecedented precipitation was caused first by the convergence of the southerly component of the pre-existing strong southwesterly monsoonal flow and the northerly component of the typhoon circulation. Then the westerly component of southwesterly flow pushed the highly moist air (mean specific humidity > 16 g/kg between 950 and 700 hPa from NCEP GFS data set) eastward against the Central Mountain Range, and forced it to lift in the preferred area. From the fine-scale numerical simulation, not only did the convergence itself provide the source of the heavy rainfall when it interacted with the topography, but also convective cells existed within the typhoon's main rainband. The convective cells were in the form of small rainbands perpendicular to the main one, and propagated as wave trains downwind. As the main rainband moved northward and reached the southern CMR, convective cells inside the narrow convergence zone to the south and those to the north as wave trains, both rained heavily as they were lifted by the west-facing mountain slopes. Those mesoscale processes were responsible for the unprecedented heavy rainfall total that accompanied this typhoon.
關聯:	ATMOSPHERIC CHEMISTRY AND PHYSICS 卷: 11 期: 1 頁數: 345-361
顯示於類別:	[地質系] 期刊論文

文件中的檔案:

檔案	描述	大小	格式	瀏覽次數
index.html		0Kb	HTML	509	檢視/開啟

檢視Licence

在CCUR中所有的資料項目都受到原著作權保護.

資料載入中.....