| DC 欄位 |
值 |
語言 |
| DC.contributor | 太空科學研究所 | zh_TW |
| DC.creator | 蔡玉嫈 | zh_TW |
| DC.creator | Yu-Ying Tsai | en_US |
| dc.date.accessioned | 2008-6-30T07:39:07Z | |
| dc.date.available | 2008-6-30T07:39:07Z | |
| dc.date.issued | 2008 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:88/thesis/view_etd.asp?URN=956203003 | |
| dc.contributor.department | 太空科學研究所 | zh_TW |
| DC.description | 國立中央大學 | zh_TW |
| DC.description | National Central University | en_US |
| dc.description.abstract | 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。 | zh_TW |
| dc.description.abstract | 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. | en_US |
| DC.subject | 赤道波動 | zh_TW |
| DC.subject | 間熱帶輻合區 | zh_TW |
| DC.subject | 克耳文波 | zh_TW |
| DC.subject | 福衛三號 | zh_TW |
| DC.subject | ITCZ | en_US |
| DC.subject | FORMOSAT-3/COSMIC | en_US |
| DC.subject | Kelvin wave | en_US |
| DC.subject | equatorial waves | en_US |
| DC.title | 利用福衛三號研究赤道波動現象 | zh_TW |
| dc.language.iso | zh-TW | zh-TW |
| DC.title | Equatorial waves observed using FORMOSAT-3 GPS Occultation | en_US |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |