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題名 | 敏督利颱風(2004)過後對臺灣中南部地區造成豪大雨之個案探討=The Case Study of Heavy Rainfall in Southwestern Area of Taiwan after Departure of Mindulle Typhoon (2004) |
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作者姓名(中文) | 李紀恩; 呂木村; 林裕豐; 林得恩; | 書刊名 | 氣象預報與分析 |
卷期 | 181 2004.12[民93.12] |
頁次 | 頁25-34 |
分類號 | 328.63 |
關鍵詞 | 天氣突變; 西南氣流; 舉升效應; Abrupt weather change; Southwest flow; Lifted effect; |
語文 | 中文(Chinese) |
中文摘要 | 天氣突變與飛航任務遂行之間存在著密不可分的關係,劇烈天氣的反應不但影響到飛航的調度、飛行的舒適,甚至常會因此而造成飛安的衝擊。因此,如何有效且即時地掌握天氣突變發生的時間、頻率以及變化,已是我現階段確保飛安的重要議題。在本文中利用美國國家環境預報中心(NCEP)之1°×1°基本網格分析資料,探討敏督利颱風過後臺灣鄰近地區綜觀環境特徵及造成臺灣中南部地區出現持續性豪大雨劇烈天氣的主要機制,藉由綜觀環境的分析以提供我們對於天氣突變有更進一步的瞭解與認識。由初步的分析結果顯示,敏督利颱風逐漸遠離期間,南海地區大氣環境提供對流系統發展的有利條件,促使對流運動不斷的在南海地區生成與發展。而這些對流雲系受颱風遠離後引進西南氣流的傳送,持續的朝臺灣中南部地區移入,並在中央山脈地形舉升的雙重效應下,使得水氣能夠在迎風面前迅速的堆積與凝結,以致於造成臺灣中南部地區7月2日至4日期間出現持續性豪大雨之災變天氣。 |
英文摘要 | The relationship between aviation safety and abrupt weather change are highly impartible. Severe weather systems not only influence dispatches of aviation and flying comfort but even impact on aviation safety. How to know the abrupt weather change effectively and immediately is important issue in aviation safety. In this study, the NCEP global analysis grid data were utilized to discuss the synoptic environment characteristics after departure of Mindulle typhoon and the mechanisms of continuous heavy rainfall in southwestern area of Taiwan. The results show that the synoptic provide favorable environment for the development of convective systems in South China Sea during the departure of Mindulle typhoon, resulting in convective system developed continuously in South China Sea. Due to the prevailing of southwest flow increased after departure of Mindulle typhoon, the convective systems excited in South China Sea were moved toward Taiwan's southwestern area and lifted near Center Mountain Range. This result cause continuous heavy rainfall in southwestern area of Taiwan during 2- 4 July 2004. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。