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研究生:張文綺
論文名稱:1996年賀伯颱風之單都卜勒雷達風場反演實驗-移動坐標法
指導教授:廖宇慶
學位類別:碩士
校院名稱:國立中央大學
系所名稱:大氣物理研究所
學門:自然科學學門
學類:大氣科學學類
論文種類:學術論文
論文出版年:1999
畢業學年度:87
語文別:中文
論文頁數:73
中文關鍵詞:單都卜勒雷達變分賀伯移動坐標
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本研究採用一種在移動坐標上所做的三維變分分析,反演出無法直接由雷達觀測到的,垂直於天線主軸的切向風場資料,以便重建完整的三維風場結構。並嘗試僅利用五分山雷達站於1996年7月31日賀伯颱風侵台時以日常例行性掃描策略下的觀測資料進行風場反演。反演的結果歸納如下:(1)反演出的風場與雙雷達合成風場吻合度甚高,亦能藉由單雷達反演法所反演出的風場看到風速有三次增強的情形,只是在風速上單雷達反演風場似乎是略小於雙雷達合成風場。(2)經由測試結果顯示,在反演過程中加入移動坐標和加入無輻散及無渦度為弱約束條件的確有助於反演結果準確度的提升。(3)最後試圖去反演颱風眼區的風場。反演出的風場大致一如颱風般為氣旋式的旋轉風場結構,但風速仍是過小。
文末對於改善反演風場風速普遍過小情形亦有探討。

目錄
摘要_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ i
致謝_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ii
目錄_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ iii
圖表說明_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ iv
第一章 前言_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _1
1.1研究動機. . . . . . . . . . . . . . . .1
1.2論文回顧. . . . . . . . . . . . . . . .2
1.3研究方向. . . . . . . . . . . . . . . .5
第二章 反演方法及資料來源 _ _ _ _ _ _ _ _ _ _ _ _7
2.1反演方法. . . . . . . . . . . . . . . .7
2.2資料來源. . . . . . . . . . . . . . . .18
第三章 結果分析_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 21
3.1反演結果與雙雷達合成風場的比較. . . . .21
3.2反演方法的測試. . . . . . . . . . . . .25
(a.)移動坐標. . . . . . . . . . . . . . 26
(b.)約束條件. . . . . . . . . . . . . . 26
3.3颱風眼區的風場反演. . . . . . . . . . .27
第四章 結論與展望_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 29
4.1結論. . . . . . . . . . . . . . . . . .29
4.2展望. . . . . . . . . . . . . . . . . .30
附錄A 雷達原始資料處理流程_ _ _ _ _ _ _ _ _ _ _ _32
參考文獻_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 35
附表及附圖_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 38

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