南海上层海洋温度垂向结构的反演  

Inversion of Ocean Temperature Structure in the South China Sea

作　　者：罗灿 刘宇皓 王一帆 黄孟亚[2,3] 管守德 赵玮 LUO Can;LIU Yuhao;WANG Yifan;HUANG Mengya;GUAN Shoude;ZHAO Wei(Key Laboratory of Ocean Observation and Information of Hainan Province,Sanya Oceanographic Institution,Ocean University of China,Sanya 572000,China;Physical Oceanography Lab/IAOS,Ocean University of China,Qingdao 266100,China;Academy of the Future Ocean,Ocean University of China,Qingdao 266100,China;Laboratory for Ocean and Climate Dynamics,Pilot National Laboratory for Marine Science and Technology,Qingdao 266237,China)

机构地区：[1]中国海洋大学三亚海洋研究院海南省海洋立体观测与信息重点实验室,海南三亚572000 [2]中国海洋大学物理海洋教育部重点实验室,山东青岛266100 [3]中国海洋大学未来海洋学院,山东青岛266100 [4]青岛海洋科学与技术国家实验室,山东青岛266237

出　　处：《数字海洋与水下攻防》2023年第2期186-197,共12页Digital Ocean & Underwater Warfare

基　　金：国家自然科学基金“南海内潮对台风–海洋相互作用的调制特征与机理研究”(41876011);三亚崖州湾科技城管理局2022年度科技计划项目“崖州湾科技城南海海洋大数据中心”(SKJC-2022-01-001);国家重点研发计划项目课题“大剖面浮标系统的南海试验与应用(保障系统)”(2022YFC3104304);海南省科技专项资助“海南岛周边海域台风风暴潮–巨浪耦合致灾机理及预警报技术研究”(ZDYF2021SHFZ265);三亚崖州湾科技城管理局重大科技项目“南海北部海洋环境实时观测、预测与保障”(SKJC-KJ-2019KY04)。

摘　　要：南海上层海洋温度垂向结构对海洋气候研究及海洋防灾减灾具有重要意义,然而由于现场观测数据有限,很难获取高时空分辨率的网格化数据。基于2007–2021年的Argo剖面数据、海面高度异常数据和月平均气候态数据,评估了两层动力模型和多层回归模型在南海海区反演海洋温度结构的性能。两层动力模型反演得到的26℃(D26)与20℃(D20)等温线深度的均方根误差分别13.25 m和21.12 m,多层回归模型的D26、D20均方根误差分别11.55 m和14.32 m。通过对比2种模型的结果:多层回归模型在时间与空间上反演结果性能更佳。2种模型反演的南海上层海洋热含量空间分布较为一致,均能应用于台风“威马逊”的强度评估;然而,在南海特殊的强内潮的背景下,2种模型得到的D20性能都有所降低。The vertical structure of ocean temperature in the South China Sea is important for climate research and marine disaster prevention and mitigation.Due to the limited in-situ observation data,it is difficult to obtain the vertical temperature structure in the South China Sea with high spatiotemporal resolution.This study evaluates the performance of the two-layer dynamic model and the multi-layer regression model in ocean temperature structure inversion based on the Argo data,the sea level anomaly(SLA)data and the World Ocean Atlas 2018(WOA18)data from 2007 to 2021.After comparing the two models,we find the Root Mean Square Error(RMSE)of D26 and D20 of the two-layer dynamic model are 13.25 m and 21.12 m,while RMSE of D26 and D20 of the multi-layer regression model are 11.55 m and 14.32 m.Overall,the multi-layer regression model has smaller error and better performance in time and space than the two-layer model.However,further analysis indicates that the spatial distribution of tropical cyclone heat potential in the South China Sea inverted by the two models is relatively consistent,and both of them can react to the intensity assessment of Typhoon Rammasun(2014).Additionally,under the influence of the special strong internal tides in the South China Sea,the performance of D20 obtained by both models is reduced.

关 键 词：南海 温度垂向结构 2层动力模型 多层回归模型 

分 类 号：P731[天文地球—海洋科学]