Numerical Study on the Bifurcation of the North Equatorial Current  

作　　者：LIU Yulong WANG Qi SONG Jun ZHU Xiande GONG Xiaoqing WU Fang 

机构地区：[1]Department of Marine Meteorology,Ocean University of China,Qingdao 266100,P.R.China [2]National Marine Data and Information Service,Tianjin 300171,P.R.China [3]People＇s Liberation Army 91422 Troops,Yantai 265200,P.R.China

出　　处：《Journal of Ocean University of China》2011年第4期305-313,共9页中国海洋大学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos. 40876004 and 40890155);the National Basic Research Program of China (973 Program)(No. 2007CB411801)

摘　　要：A 1.5-layer reduced-gravity model forced by wind stress is used to study the bifurcations of the North Equatorial Current(NEC).The authors found that after removing the Ekman drift,the modelled circulations can serve well as a proxy of the SODA circulations on the σθ=25.0 kg m～-3 potential density surface based on available long-term reanalysis wind stress data.The modelled results show that the location of the western boundary bifurcation of the NEC depends on both zonal averaged and local zero wind stress curl latitude.The effects of the anomalous wind stress curl added in different areas are also investigated and it is found that they can change the strength of the Mindanao Eddy(ME),and then influence the interior pathway.A 1.5-layer reduced-gravity model forced by wind stress is used to study the bifurcations of the North Equatorial Current（NEC）.The authors found that after removing the Ekman drift,the modelled circulations can serve well as a proxy of the SODA circulations on the σθ=25.0 kg m～-3 potential density surface based on available long-term reanalysis wind stress data.The modelled results show that the location of the western boundary bifurcation of the NEC depends on both zonal averaged and local zero wind stress curl latitude.The effects of the anomalous wind stress curl added in different areas are also investigated and it is found that they can change the strength of the Mindanao Eddy（ME）,and then influence the interior pathway.

关 键 词：North Equatorial Current the western boundary interior pathway BIFURCATION wind stress curl 1&1/2 Model 

分 类 号：P[天文地球]