海洋预报2017，Vol.34Issue(5)：1-15,15.DOI:10.11737/j.issn.1003-0239.2017.05.001
冬季台湾西南海域一对冷、暖中尺度涡的同化模拟研究
An assimilative numerical study of the paired cold and warm mesoscale eddies during winter in the southwest of Taiwan
摘要
Abstract
Based on the improved South China Operational Forecasting System of 1/30°resolution,the Ensemble Optimal Interpolation (EnOI) assimilation was applied to the model for simulating the mesoscale eddies in the northern South China Sea (SCS).The simulation results accurately reproduce the generation and propagation process of the paired eddies occurred in the southwest of Taiwan during the winter of 2013.The vertical structure of the paired eddies during their mature period were analyzed,the results suggested that the thermocline depth of the warm eddy center is more than 200m,and the thermocline depth of the cold eddy center is less than 150m.The meridional and zonal velocities of the paired eddies were asymmetric,and the adjacent side flow showed stronger with the corresponding level of strong velocity shear.All the above characteristics were in agreement with the results of South China Sea Mesoscale Eddy Experiment (S-MEE) during the same period.In addition,the generation mechanism analysis of the paired eddies confirmed that the warm eddy shed from the Kuroshio loop,and pointed out that the cold eddy originated from the combined action of strong cyclonic shear on the north side of warm eddy and offshore transport caused by the southwest currents.关键词
中尺度涡/数值模拟/数据同化/台湾西南Key words
mesoscale eddy/numerical simulation/data assimilation/southwest of Taiwan分类
海洋科学引用本文复制引用
赵福,张蕴斐,朱学明,王兆毅..冬季台湾西南海域一对冷、暖中尺度涡的同化模拟研究[J].海洋预报,2017,34(5):1-15,15.基金项目
国家重点基础研究发展计划项目(2014CB745004) （2014CB745004）
“全球变化与海气相互作用”专项(No.GASI-IPOVAI-06) （No.GASI-IPOVAI-06）
国家自然科学基金项目(41376016). （41376016）
