臺灣博碩士論文加值系統

運用福衛三號（FORMOSAT-3/COSMIC）衛星在2006年8月至2008年2月的觀測資料，我們分析出赤道大氣克耳文波（Kelvin wave）於低層平流層之結構與傳播方向，以及印度地區間熱帶輻合區（intertropical convergence zone，簡稱ITCZ）南北移動的情形。在大氣克耳文波方面，由溫度變動值的變化我們可以看到，在水平方向上，赤道大氣克耳文波相位有隨時間向東傳播的現象，相速度約為2680 km/day，結果並顯示在高度19公里處，波數為一以及二的周期分別為12－17天及8－12天；在垂直方向上，赤道大氣克耳文波相位結構隨高度向東傾斜，相位隨時間向下傳播，相速度約為0.5-1 km/day，垂直波長在2006年及2007年分別為4-6公里及6-10公里。在ITCZ方面，由福衛三號衛星資料演算出的水汽含量資料發現，高水汽含量區域隨時間在緯度位置上呈現約一年的變化，分別在二月及八月時移動到最南端以及最北端。配合地面降水量及長波輻射資料對應，水汽含量資料表現了ITCZ隨時間在緯度位置變化的特性。

Structure and propagation of equatorial atmospheric Kelvin waves and the latitudinal migration of intertropical convergence zone （ITCZ） during August 2006 and February 2008 are observed using FORMOSAT-3/COSMIC data. Zonal Kelvin wave derived from temperature fluctuations at 19 km characterize eastward phase propagation with the phase speed 2680 km/day, the wave periods are 12-17 days for zonal wave number 1 and 8-12 days for wave number 2. The vertical structure of Kelvin wave tilts eastward with height between 18-30 km, the phase propagates downward with the phase speed 0.5-1 km/day, and vertical wavelengths are 4-6 km in 2006 and 6-10 km in 2007. Integrated water vapor derived from COSMIC data shows one year variation in time-latitude section, high value region moved to the most southern part and northern part on February and August. It shows the characteristics of the latitudinal migration of ITCZ.

中文摘要 I
英文摘要 II
誌謝 III
目錄 IV
圖目錄 VI
表目錄 IX
第一章 緒論
1-1 研究回顧及介紹 1
1-2 研究動機 5
1-3 論文內容概述 6
第二章 儀器介紹與資料品質
2-1 儀器簡介
2-1.1 福爾摩沙衛星三號 7
2-1.2 TRMM衛星 12
2-1.3 NOAA衛星 14
2-2 福衛三號資料與板橋探空站資料比對 16


第三章 利用福衛三號研究赤道大氣克耳文波
3-1 資料選擇 19
3-2 溫度變化趨勢線 20
3-3 赤道大氣克耳文波之水平相位傳播 22
3-4 赤道大氣克耳文波之垂直相位傳播及結構 27
3-5 討論 31
第四章 利用福衛三號研究間熱帶輻合區
4-1 前言 35
4-2 資料選擇 36
4-3 水汽含量之演算 37
4-4 觀測結果 39
4-5 討論 43
第五章 結論 44
參考文獻 47

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