English  |  正體中文  |  简体中文  |  Items with full text/Total items : 68069/68069 (100%)
Visitors : 23107201      Online Users : 191
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version

    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50327

    Title: Investigation of a heavy rainfall event over southwestern Taiwan associated with a subsynoptic cyclone during the 2003 Mei-Yu season
    Authors: Chen,CS;Lin,YL;Peng,WC;Liu,CL
    Contributors: 大氣物理研究所
    Date: 2010
    Issue Date: 2012-03-27 17:29:28 (UTC+8)
    Publisher: 國立中央大學
    Abstract: The objective of this study is to perform observational data analyses, including European Centre for Medium-Range Weather Forecasts (ECMWF) data, satellite imagery, radar reflectivity, and rainfall data, and numerical simulations with the Weather Research and Forecast (WRF) model to investigate both the synoptic and mesoscale processes responsible for causing the heavy rainfall event which produced up to 379.5 mill over southwestern Taiwan on 7 June 2003. We found that an 850 hPa subsynoptic cyclone, composed of both a low-pressure center and a vortex, formed over the eastern Tibetan Plateau and moved with a 500 hPa shortwave trough toward a wind shear zone over southeastern China in the early morning of 7 June. The wind shear zone was generated by a southwesterly monsoonal flow and a northeasterly flow associated with a high pressure in eastern China. The intensifying 850 hPa subsynoptic cyclone served as a precursor of the heavy rainfall episode in Taiwan. The 850 hPa subsynoptic cyclone extended downward to form a surface subsynoptic cyclone over the southeastern coast of China by coupling the ascending motions associated with the 500 hPa shortwave trough and the 850 hPa subsynoptic cyclone. The mesoscale convective system associated with this surface subsynoptic cyclone migrated from southeastern China to the southwestern Taiwan Strait and then toward southwestern Taiwan. Meanwhile, the speed of the 850 hPa low-level jet oil the southern side of the subsynoptic cyclone exceeded 20 in s(-1) over the southern Taiwan Strait. This jet then served as a conveyor belt of the moist airstream and enhanced the inland-moving convection over the mountain slopes. In addition, the low-level convergence resulted from the confluence of flow due to flow deflection over southern Taiwan topography also facilitated rainfall there. (C) 2009 Elsevier B.V. All rights reserved.
    Appears in Collections:[大氣物理研究所 ] 期刊論文

    Files in This Item:

    File Description SizeFormat

    All items in NCUIR are protected by copyright, with all rights reserved.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback  - 隱私權政策聲明