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Observational study of super typhoon Meranti (2016) using satellite, surface drifter, Argo float and reanalysis data
Acta Oceanologica Sinica ( IF 1.4 ) Pub Date : 2021-03-17 , DOI: 10.1007/s13131-021-1702-9
Hui Chen , Shuang Li , Hailun He , Jinbao Song , Zheng Ling , Anzhou Cao , Zhongshui Zou , Wenli Qiao

The present work describes the basic features of super typhoon Meranti (2016) by multiple data sources. We mainly focus on the upper ocean response to Meranti using multiplatform satellites, in situ surface drifter and Argo floats, and compare the results with the widely used idealized wind vortex model and reanalysis datasets. The pre-existing meso-scale eddy provided a favor underlying surface boundary condition and also modulated the upper ocean response to Meranti. Results show that the maximum sea surface cooling was 2.0°C after Meranti. The satellite surface wind failed to capture the core structure of Meranti as the idealized wind vortex model deduced. According to the observation of sea surface drifters, the near-inertial currents were significantly enhanced during the passage of Meranti. The temperature and salinity profiles from Argo floats revealed both the mixed-layer extension and subsurface upwelling induced by Meranti. The comparison results show that the sea surface temperature and surface wind in the reanalysis datasets differs from those in remote sensing system. Sea surface cooling is similar in both satellite and in situ observation, and sea surface salinity response has a lower correlation with the precipitation rate.



中文翻译:

利用卫星,地面漂泊者,Argo浮标和再分析数据对超级台风Meranti(2016)进行的观测研究

本工作通过多个数据源描述了超级台风Meranti(2016)的基本特征。我们主要集中在海洋上层响应莫兰蒂使用多颗卫星,在原位表面漂流器和Argo浮子,并将结果与​​广泛使用的理想化风涡模型和再分析数据集进行比较。先前存在的中尺度涡提供了有利的潜在地表边界条件,也调节了上洋对Meranti的响应。结果表明,在Meranti之后,最大海面冷却为2.0°C。推论出理想的风涡模型后,卫星表面风未能捕捉到Meranti的核心结构。根据对海面漂流者的观察,在默兰蒂通过期间,近惯性流得到了显着增强。来自Argo浮标的温度和盐度分布图显示了Meranti引起的混合层延伸和地下上升流。比较结果表明,再分析数据集中的海面温度和海面风与遥感系统中的海温和海面风不同。卫星和就地观测而言,海表盐度响应与降水速率的相关性较低。

更新日期:2021-03-17
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