Observations of the cold wake of Typhoon Fanapi (2010)
Observations of the cold wake of Typhoon Fanapi (2010)
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DOI：
10.1029/2012gl054282
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发表时间：
2013-01
影响因子：
5.2
通讯作者：
R. Mrvaljevic;P. Black;L. Centurioni;Ya-Ting Chang;E. D’Asaro;S. Jayne;Craig M. Lee;R. Lien;I. Lin;J. Morzel;Pearn P. Niiler (deceased);L. Rainville;T. Sanford
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文献类型：
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作者：
R. Mrvaljevic;P. Black;L. Centurioni;Ya-Ting Chang;E. D’Asaro;S. Jayne;Craig M. Lee;R. Lien;I. Lin;J. Morzel;Pearn P. Niiler (deceased);L. Rainville;T. Sanford
利用几万个温度剖面图对2010年台风范纳皮冷尾流的热演化过程进行了研究。9月18日，台风凡纳比在北太平洋西部形成了一个冷尾流，其特征是混合层的温度比周围的水低2.5℃，并且延伸到>80 m，是先前存在的混合层的两倍深。最初的冷尾流在4天后被覆盖，形成了一层温暖的薄表层。封顶尾流（26°C - 27°C层）的厚度减小，接近该层的背景厚度，e -折叠时间为23天，几乎是海表温度（SST）冷尾流e -折叠寿命（12天）的两倍。尾流在风暴路径数百公里外被一个预先存在的中尺度涡流平流。这些观测结果揭示了冷流演变的新复杂性，并证明了仅利用海面信息描述上层海洋热结构的挑战。
Several tens of thousands of temperature profiles are used to investigate the thermal evolution of the cold wake of Typhoon Fanapi, 2010. Typhoon Fanapi formed a cold wake in the Western North Pacific Ocean on 18 September characterized by a mixed layer that was >2.5 °C cooler than the surrounding water, and extending to >80 m, twice as deep as the preexisting mixed layer. The initial cold wake became capped after 4 days as a warm, thin surface layer formed. The thickness of the capped wake, defined as the 26 °C–27 °C layer, decreased, approaching the background thickness of this layer with an e‐folding time of 23 days, almost twice the e‐folding lifetime of the Sea Surface Temperature (SST) cold wake (12 days). The wake was advected several hundreds of kilometers from the storm track by a preexisting mesoscale eddy. The observations reveal new intricacies of cold wake evolution and demonstrate the challenges of describing the thermal structure of the upper ocean using sea surface information alone.