季內多重尺度波動與颱風相互影響的機制探討;An Investigation of Interactive Processes between Multi-Scale Subseasonal Disturbances and Tropical Cyclones

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Title:	季內多重尺度波動與颱風相互影響的機制探討;An Investigation of Interactive Processes between Multi-Scale Subseasonal Disturbances and Tropical Cyclones
Authors:	隋中興
Contributors:	水文與海洋科學研究所
Keywords:	短期氣候變化;熱帶波動;極端天氣;short-term climate prediction;tropical waves;extreme weather events;大氣科學類
Date:	2010-07-01
Issue Date:	2010-06-21 10:56:46 (UTC+8)
Publisher:	行政院國家科學委員會
Abstract:	本計畫之目標為探討次月尺度變化與極端天氣間之互相影響的機制。主要工作將就選定個案分析年（2003 與 2004 兩年），選擇熱帶季內振盪、氣旋波動、東風波活躍期間，透過觀測與模擬分析，探討TC生成與波動的因果關係。觀測分析部分，將利用高解析度衛星觀測與再重分析資料，分析各波動場時空變化特徵、波動與TC生成/活動之觀係；模擬部分，將利用高解析度區域模式，做三組模擬實驗（E1 – 給定初始條件與側邊界條件；E2 – 控制模擬場；E3 – 控制模擬的20天以上低頻場，各組積分時間為一個月），分析模式模擬的TC與波動的關係，並與觀測分析比較驗證模式的結果，探討TC生成與波動的因果關係。 The objective of the proposal is to investigate how the tropical multiscale disturbances (intraseasonal oscillations, synoptic-scale disturbances) interact with tropical cyclones. The proposed tasks include: 1) observational analysis based on high-resolution satellite and assimilation data to examine relevant processes maintaining the multiscale disturbances –TC relation; 2) to perform three types of numerical experiments using a regional model (E1–one-month integration with given lateral boundary condition; E2–model fields controlled by nudging toward observed low-frequency fields ; E3–model low-freqency fields controlled by nudging toward observed low-frequency fields) so the observed wave-TC relation can be compared to and explained by model results. 研究期間：9808 ~ 9907
Relation:	財團法人國家實驗研究院科技政策研究與資訊中心
Appears in Collections:	[Graduate Institute of Hydrological and Oceanic Sciences] Research Project

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