原名「台灣學術線上」
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1
題名:A Case Study of Polar Low over the Japan Sea--Part Two: The Numerical Simulation    
日本海極地低壓的個例研究-2.數值模擬
著者:Gang Fu(傳剛) ;Qin-Yu Liu(劉秦玉) ;H. Niino(新野宏) ;R. Kimura(木村龍治) ;Zeng-Mao Wu(吳增茂)
出版地區:台灣
出版城市:台北市
學科:地球科學
關鍵字:極地低壓 ; 日本譜模式 ; 數值模擬 ; 類CISK過程 ; polar lows ; Japan Spectral Model ; numerical simulation ; CISK-like process
刊名:ACTA Oceanographica Taiwanica
卷期:37卷1期(1998.6)
頁碼:61-75
語言:英語
摘要: 中文摘要PDF ; 英文摘要PDF

在給出了1996年2月26日發生在日本海上的一個極地低壓的典型個例的分析結果之後,本文利用有限區域日本譜模式(JSM)模擬了該極地低壓的發展過程。根據模式輸出的詳細結果,該極地低壓的演變過程可分成初始和成熟兩個階段來討論。初始階段,該極地低壓生成於大氣的斜壓區。PV的分析顯示上層的PV異常會加強低層的氣旋式環流。在成熟階段,來自日本海暖水域的熱通量使低層大氣不穩定。由於低壓輻合會產成垂直對流,並釋放凝結潛熱。這種類CISK過程是極地低壓進一步發展的機制。
Following the results of the analysis of a typical polar low event that occurred on February 26, 1996 over the Japan Sea, the JSM (Japan Spectral Model) was used to simulate the development of this polar low event. Based on the detailed JSM outputs, the evolution and structure of this polar low is discussed in two stages, corresponding to the initial and mature stages. At the initial stage, the polar low generates in a baroclinic zone. In addition, the PV (Potential Vorticity) analysis indicates that an approaching upper-level PV anomaly later intensified the low-level cyclonic circulation. At the mature stage, strong sea surface fluxes from the relatively warm waters of the Japan Sea give rise to the instability of the low-level. Consequently, the vertical convection occurs due to the low-level convergence and the release of latent heat takes place through the convection, The CISK-like process supplies a mechanism for further development of the polar low. The analysis of vorticity indicates that the Changbai Mountain provides the positive vorticity contribution to the polar low.


    

本卷期目次
ACTA Oceanographica Taiwanica 37卷1期 (1998.6)
A Survey of Studies on the South China Sea Upper Ocean Circulation/ Guo-Hong FangWen-Dong FangYue FangKai Wang
Determination of Tributyltin in Sediments from the Machu and Taiwan Coastal Areas/ Tsu-Chang HungBor-Ping Liu
A Numerical Simulation of Tides and Tidal Currents in the South China Sea/ Il-Ju Moon
A study of the characteristics of wave spectra over the seas around Korea by using a parametric spectrum method
Sea Surface Temperature Variability at Futaoi Island in the Tsushima Strait/ Tomoharu Senjyu
A Case Study of Polar Low over the Japan Sea--Part Two: The Numerical Simulation/ Gang FuQin-Yu LiuH. NiinoR. KimuraZeng-Mao Wu
An Influence of Bottom Topography on the Western Boundary Current/ Hai-Juu YangQin-Yu LiuWei Li
宜蘭灣水團與台灣北部陸棚水之關係/ 李逸環胡健驊
 
   
 
   

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