文献类型：期刊文献

英文题名：Tropical cyclone enhanced vertical transport in the northwestern South China Sea I: Mooring observation analysis for Washi (2005)

作者：Wang, Liju[1];Xie, Lingling[1,2];Zheng, Quanan[3];Li, Junyi[1,2];Li, Mingming[1,2];Hou, Yijun[4]

机构：[1]Guangdong Ocean Univ, Coll Ocean & Meteorol, Guangdong Key Lab Coastal Ocean Variat & Disaster, Zhanjiang 524088, Peoples R China;[2]Marine Resources Big Data Ctr South China Sea, Southern Marine Sci & Engn Guangdong Lab Zhanjian, Zhanjiang 524025, Peoples R China;[3]Univ Maryland, Dept Atmospher & Ocean Sci, College Pk, MD 20742 USA;[4]Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China

年份：2020

卷号：235

外文期刊名：ESTUARINE COASTAL AND SHELF SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000527915700045)、、Scopus(收录号：2-s2.0-85078678795)、WOS

基金：This work is supported by the National Nature Science Foundation of China [Grants 41776034, 47106025, and 41476009], the National Program on Global Change and Air-Sea Interaction [Grants GASI-02-SCS-YGST2-02, and GASI-IPOVAI-01-02] and The Guangdong Province First-Class Discipline Plan [Grant CYL231419012].

语种：英文

外文关键词：Vertical velocity; Turbulent mixing; Tropical cyclone; Mooring observation; South China Sea

外文摘要：Using mooring-observed horizontal velocities and temperature from July 28 to August 2, 2005, this study analyzes the temporal-vertical variation of the diagnostic vertical velocity and mass transport during passage of tropical storm Washi (2005) over the northwestern continental shelf of the South China Sea (SCS). The results show that the total vertical velocity is of the order of O(1 x 10(-4)) m s(-1) in the mixed layer above 25 m, and of O (1 x 10(-5)) m s(-1) in the lower layer. Dynamically, the geostrophic advection and unsteady behavior of density induced by near-inertial oscillation are dominant factors in the upper and lower layers, respectively. As tropical storm Washi (2005) passed by from July 29 to 31, 2005, the upward vertical velocity was dominant and significantly enhanced to the order of O(1 x 10(-3)) m s(-1). The diagnosed vertical velocity in the upper layer is one order greater than the averaged Ekman pumping velocity, which occurred one day earlier. The vertical advection transport calculated from the diagnosed vertical velocity reaches O(1 x 10(-5)) kg s(-1) m(-3), one order greater than that induced by turbulent mixing. Time-averaged transports by vertical advection and mixing are both upward in the layer above the thermocline during the storm passage.