基于Argo数据研究南海上层海洋对超强台风“威马逊”(2014)的温盐响应  

Upper ocean response to super typhoon Rammasun(2014)based on Argo data in the South China Sea

作　　者：俞杰 张翰 陈大可[1,2,3,4] YU Jie;ZHANG Han;CHEN Dake(State Key Laboratory of Satellite Ocean Environment Dynamics,Hangzhou 310012,China;Second Institute of Oceanography,MNR,Hangzhou 310012,China;Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Zhuhai 519082,China;School of Oceanography,Shanghai Jiao Tong University,Shanghai 201100,China)

机构地区：[1]卫星海洋环境动力学国家重点实验室,浙江杭州310012 [2]自然资源部第二海洋研究所,浙江杭州310012 [3]南方海洋科学与工程广东省实验室(珠海),广东珠海519082 [4]上海交通大学海洋学院,上海201100

出　　处：《海洋学研究》2023年第2期14-27,共14页Journal of Marine Sciences

基　　金：南方海洋科学与工程广东省实验室(珠海)资助项目(SML2021SP207);国家自然科学基金项目(42176015);中央级公益性科研院所基本科研业务费专项资金资助项目(QNYC2002);南方海洋科学与工程广东省实验室(珠海)创新团队建设项目(311021001);上海交通大学“深蓝计划”项目(SL2020MS032)。

摘　　要：利用Argo浮标观测数据并结合卫星遥感及锚定浮标观测资料,对2014年超强台风“威马逊”引起的上层海洋温盐响应进行了分析和研究。结果显示,超强台风“威马逊”过境时会造成海表面温度冷却和混合层加深。通过计算混合长度和台风引起的垂向流速变化解释了次表层温度变化的原因:强混合作用和弱上升流作用致使次表层增温,反之次表层冷却。相比于温度的变化,盐度的响应更为复杂,台风引起的降水会先导致表层盐度降低,随后垂向混合引起表层盐度大幅增加,但是降水的作用能够极大地抑制这一过程;台风离境后,垂向混合减弱,强降水引起盐度大幅降低,甚至会使盐度低于台风过境前。Using Argo measured data combined with satellite remote sensing data and moored buoy data,the upper ocean temperature and salinity response caused by super typhoon Rammasun in 2014 was analyzed and studied.The result shows that super typhoon Rammasun resulted in cooling of sea surface temperature and deepening of mixing layer.Meanwhile,mixing length and vertical velocity induced by typhoon were calculated in this research,which explained the causes of temperature changes in the subsurface layer.Strong mixing and weak upwelling led to warming of the subsurface layer,whereas weak mixing and strong upwelling led to cooling of the subsurface layer.Compared with the change of temperature,the response of salinity was more complex.Precipitation first caused the decrease of surface salinity,and then vertical mixing led to a large increase of surface salinity.However,the effect of precipitation could greatly inhibit this process.After the typhoon departed,the vertical mixing was weakened,and the salinity was greatly reduced because of the heavy precipitation,it was even lower than that before the typhoon.

关 键 词：超强台风 ARGO 温度 盐度 混合层 

分 类 号：P732.6[天文地球—海洋科学]