利用海洋模式POM模拟了吕宋海峡上层海洋对历经其上的2011年8月1111号台风南玛都的响应过程。基于2个方面进行了模拟实验,其一是吕宋海峡上层海洋对固定大小及位置的台风风场响应;其二是吕宋海峡上层海洋对台风南玛都移动期间的响应。并分析了台风南玛都的风场和海洋响应南玛都的表层流场、SST及SSS。研究结果表明:(1)吕宋海峡上层海洋对台风风场结构不对称的响应表现出吕宋海峡上层海洋右侧的流速要远大于左侧,海流和台风一样具有右偏特征。海洋表面温度(SST)下降2-7℃,下降的空间范围直径在百公里,表现为右强左弱的不对称性。(2)上层海洋对驻台风的响应过程中,海洋流场及SST达到能量的极值后,会触发1个反气旋流场控制吕宋海峡,SST经过约10d时间恢复到初始态。(3)上层海洋对台风移动过程的响应表现为1个随台风移动的海洋流场,海流的强度和SST下降的幅度都较小,海流气旋式结构沿着路径有一定的拉伸,并且在路径后方出现尾流。
The response of the upper ocean of the Luzon Strait to Typhoon Nanmadol was simulated by using POM model.The simulation experiment was carried in the on two aspects,the first was the response of the upper ocean of the Luzon Strait to fixed size and position typhoon wind field,the second was the response of the upper ocean of the Luzon Strait to during the typhoon Nanmadol moving.The Typhoon Nanmadol wind field and response of ocean surface flow field、SST and SSS to Nanmadol were analyzed.The results showed that:(1)Luzon Strait in the upper ocean response to asymmetry of typhoon wind field structure indicated the Luzon Strait velocity greater than the left side on the right side of the upper ocean,as has the right characteristics,current and typhoon.Sea surface temperature(SST)dropped 2~7℃,falling space is hundreds of kilometers in diameter,show the right strong left weak asymmetry.(2)In the process of the upper ocean response to the fixed typhoon,ocean flow field and SST after reaching extreme value of energy,it will trigger an anticyclonic flow field control the Luzon strait,SST after about ten days to return to the initial state.(3)Upper ocean response to typhoon movement show the one with the typhoon moving ocean flow field,current intensity and SST decline amplitude is smaller,current cyclone structure has certain stretching along the path,and in the pate behind a wake.