https://scholars.lib.ntu.edu.tw/handle/123456789/543792
標題: | Warm ocean anomaly, air sea fluxes, and the rapid intensification of tropical cyclone Nargis (2008) | 作者: | Lin, II Chen, CH Pun, IF Liu, WT Wu, CC CHUN-CHIEH WU I-I LIN |
關鍵字: | HURRICANE INTENSITY; THERMAL STRUCTURE; EDDY | 公開日期: | 2009 | 出版社: | AMER GEOPHYSICAL UNION | 卷: | 36 | 期: | 3 | 來源出版物: | GEOPHYSICAL RESEARCH LETTERS | 摘要: | On 2 May 2008, category-4 tropical cyclone Nargis devastated Myanmar. It was observed that just prior to its landfall, Nargis rapidly intensified from a weak category-1 storm to an intense category-4 storm within only 24 h. Using in situ ocean depth-temperature measurements and satellite altimetry, it is found that Nargis' rapid intensification took place on a pre-existing warm ocean anomaly in the Bay of Bengal. In the anomaly, the subsurface ocean is evidently warmer than climatology, as characterized by the depth of the 26°C isotherm of 73-101 m and the tropical cyclone heat potential of 77-105 kj cm -2. This pre-existing deep, warm subsurface layer leads to reduction in the cyclone-induced ocean cooling, as shown from the ocean mixed layer numerical experiments. As a result, there was a near 300% increase in the air-sea enthalpy flux to support Nargis' rapid intensification. Copyright 2009 by the American Geophysical Union.J. Atmos. Sci., 64, 3562-3578. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/543792 | ISSN: | 0094-8276 | DOI: | 10.1029/2008GL035815 |
顯示於: | 應用力學研究所 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。