Interannual variability of South China Sea winter circulation: response to Luzon Strait transport and El Nino wind
Interannual variability of South China Sea winter circulation: response to Luzon Strait transport and El Nino wind
复制标题
南海冬季环流的年际变化：对吕宋海峡输送和厄尔尼诺风的响应
DOI：
10.1007/s00382-019-05050-2
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发表时间：
2020
期刊：
影响因子：
4.6
通讯作者：
Wang Dongxiao
中科院分区：
文献类型：
--
作者：
Wang Qiang;Zeng Lili;Shu Yeqiang;Liu Qinyan;Zu Tingting;Li Jian;Chen Ju;He Yunkai;Wang Dongxiao
El Niño风和吕宋海峡运输分别是调节南海南部和北部冬季环流年际变化的重要因子。El Niño风与吕宋海峡向西输送共同作用，驱动南（北）南海出现反气旋（气旋）环流异常的偶极环流，增强了民都洛海峡周边连接南海西边界流与南海东边界的跨海盆流，从而有效调节民都洛海峡输送的年际变化。2015/16年冬季发生了一次极端厄尔尼诺Niño和吕宋海峡大入侵，系泊观测和遥感数据证实了强烈偶极环流的存在。这导致了2015/16年度极端向东跨海盆流和向外民都洛海峡运输异常。
The El Niño wind and Luzon Strait transport are important factors modulating the interannual variability of the southern and northern South China Sea (SCS) winter circulation, respectively. The joint effect of El Niño wind and westward Luzon Strait transport drives a dipolar gyre with an anticyclonic (cyclonic) circulation anomaly in the southern (northern) SCS, which enhances the cross-basin current that connects the SCS western boundary current with the eastern boundary of the SCS around the Mindoro Strait, and then effectively modulates the interannual variability of Mindoro Strait transport. An extreme El Niño and large Luzon Strait intrusion occurred in winter 2015/16, and mooring observations and remote sensing data confirmed the presence of an intense dipolar gyre. This resulted in an extreme eastward cross-basin current and outward SCS Mindoro Strait transport anomaly in 2015/16.