查詢結果分析
來源資料
相關文獻
- 利用衛星資料分析臺灣東部外海黑潮與大氣之交互作用
- Bifurcation Current Found along the Coast of the Kii Peninsula and Position of the Kuroshio Axis
- Does Small-Scale Meander Travel Eastwards and Trigger Large-Scale Meander of the Kuroshio﹖
- 陸棚對臺灣東北方黑潮形成水環之影響
- 臺東蘭嶼間醱酵廢液海拋即時監測之研究
- 黑潮對綠島早期涉外關係的影響
- Potential Application of Satellite Data and Geographic Information System in Taiwan
- 梅雨季海上中尺度對流系統消長的個案分析--海氣交互作用
- 利用MSU和GMS-5資料估算海面上中尺度之降水
- 應用衛星資料在梅雨季海上中尺度對流系統生成前兆之初步探討
頁籤選單縮合
題名 | 利用衛星資料分析臺灣東部外海黑潮與大氣之交互作用=Air-Sea Interaction of Kuroshio near the East of Taiwan by Satellite Remote Sensing |
---|---|
作 者 | 方敏; 林依依; 隋中興; | 書刊名 | 航測及遙測學刊 |
卷期 | 17:3 2013.11[民102.11] |
頁次 | 頁173-192 |
分類號 | 328.2 |
關鍵詞 | 黑潮; 海氣交互作用; 海溫梯度; 衛星資料; Kuroshio; Air-sea interaction; SST gradient; Satellite data; |
語文 | 中文(Chinese) |
中文摘要 | 台灣緊鄰黑潮,眾多天氣系統與黑潮相關,近年針對中高緯度暖流與大氣間交互作用研究眾多,然而目前對中低緯度暖流,特別是台灣東部外海黑潮(由經緯度(127oE,30 oN), (132 oE,30 oN), (118 oE,22 oN), (123 oE,22 oN)四點組成之範圍)對大氣的影響程度了解甚少。本研究目的即為探討低緯段黑潮(KS)與大氣間交互作用,研究範圍定在台灣東部外海到琉球群島一帶,利用高解析衛星資料及觀測資料探討多項相關參數,包括海表面溫度、雲量、降雨率、蒸發率、水氣通量、風場輻合、垂直運動、熱通量等,分析季節性變化並搭配低緯段灣流(GS)比較討論。 季節分析結果顯示,KS區內冬季的黑潮藉可感熱通量和蒸發,對大氣影響為淺層加熱,然而受下沉氣流影響,垂直上升運動至750hPa;春季則透過海溫梯度(SST gradients)影響低層風場,風場和水氣在當地輻合,配合鋒面抬舉作用,產生對流以致降雨,垂直上升運動至400hPa;夏秋兩季對流發展強,分別達100hPa和150hPa,但是KS海溫梯度不顯著,主要為溫度夠高所致。較高緯度的GS則四季皆有顯著海溫梯度,冬季情形與KS類似,但無下沉氣流壓抑且和高緯運動相連,可達300hPa;春季蒸發減少1x10-2Pa/s,垂直運動只至700hPa;夏秋也和KS同,對流顯著達150hPa和200hPa,不過海溫梯度使上升運動固定於此。整體來說,若海表面溫度梯度夠顯著,且大尺度大氣無不利條件,例如強烈下沉氣流等因素,KS在冬季和春季時藉海溫梯度對低層風場的調整,影響可達中高對流層。 |
英文摘要 | Many weather phenomena are related to Kuroshio, which is neighboring to Taiwan. However, there were rare studies about the interaction between the atmosphere and the warm current in low latitude region, especially Kuroshio near the east of Taiwan ((127oE,30 oN), (132 oE,30 oN), (118 oE,22 oN), (123 oE,22 oN)). The aim of this study is to investigate the atmosphere response to the south region of Kuroshio (KS: 118-132oE, 22-30oN) and to compare with the south region of Gulf Stream (GS: 278-292oE, 30-38oN). A suit of high resolution satellite data and observed data are analyzed including sea surface temperature (SST), cloud, rain, evaporation, moisture flux, vertical motion and heat flux etc. Seasonal variability analysis showed that, in winter, KS and GS affected atmosphere by sensible heat flux and evaporation. The upward motion extended from surface to 300hPa in GS, but limited to 750hPa in KS owing to large scale downward motion; in spring, SST gradient was stronger than other seasons in KS and cooperated with frontal lifting. It sequentially caused the local wind convergence, deep convection and rain. The upward motion extended to 400hPa in KS, but to 700hPa in GS; in summer and fall, the upward motion extended to about 150hPa in both KS and GS. In GS, the SST gradient was the key to anchoring the upward motion. In KS, the deep convection was due to high-SST. Overall, the KS will affects the upper troposphere through low level wind adjustment by SST gradient in winter and spring, if SST is strong and atmospheric condition is not unfavorable. Our study was based on observed data set, the exact restricted reason and mechanism are not clear, other large scale information and regional model would be good methods to further study. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。