English  |  正體中文  |  简体中文  |  Items with full text/Total items : 70548/70548 (100%)
Visitors : 23136652      Online Users : 369
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/987654321/50384


    Title: Observing System Simulation Experiment: Development of the system and preliminary results
    Authors: Chen,SH;Chen,JY;Chang,WY;Lin,PL;Lin,PH;Sun,WY
    Contributors: 大氣物理研究所
    Keywords: SENSITIVITY STEERING VECTOR;ENSEMBLE KALMAN FILTER;2001 IMPROVE-2 EVENT;DATA ASSIMILATION;MESOSCALE-MODEL;DOPPLER RADAR;TARGETED OBSERVATIONS;TROPICAL CYCLONES;ANALYSIS ERROR;PACIFIC-OCEAN
    Date: 2011
    Issue Date: 2012-03-27 17:30:34 (UTC+8)
    Publisher: 國立中央大學
    Abstract: An Observing System Simulation Experiment (OSSE) was developed and conducted to assess the potential impact of different observing strategies of field experiments on analysis and short-term forecasts. A Mei-Yu front rainfall case study, occurring in 2003 in southeastern Asia, was utilized to demonstrate the OSSE application to field experiments. Data sampling strategies from the Taiwan Island Monsoon Rainfall Experiment (TIMREX), with some modifications, were used. The nature run was produced by the Weather Research and Forecasting (WRF) model with a resolution of 1 km. The observational operators, which were developed to simulate observations, included radar, radiosonde, dropsonde, wind profiler, and surface stations. The verification of simulated observations, such as radar echo and radial velocity, and preliminary results from data assimilation experiments, demonstrated that the developed OSSE system performed reasonably well. The use of more observations, such as radar data, dropsondes, and extra radiosondes, was able to significantly improve analysis of winds and, to a lesser extent, moisture, and short-term rainfall forecasts. While more observations helped improve simulations, the use of higher-frequency observations (e. g., 3 h radiosondes) launched at the same locations for this case study did not substantially influence results. Thus, the information may be potentially saturated and more studies to tackle this problem are required.
    Relation: JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
    Appears in Collections:[大氣物理研究所 ] 期刊論文

    Files in This Item:

    File Description SizeFormat
    index.html0KbHTML572View/Open


    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