| Dramatic weakening of the ear-shaped thermal front in the Yellow Sea during 1950s–1990s |
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| 引用本文： | 塔娜,方越,刘宝超,孙双文,王辉武.Dramatic weakening of the ear-shaped thermal front in the Yellow Sea during 1950s–1990s[J].海洋学报(英文版),2017,36(5):51-56. |
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| 作者姓名： | 塔娜 方越 刘宝超 孙双文 王辉武 |
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| 作者单位： | 中国海洋大学海洋与大气学院, 青岛, 266100;国家海洋局第一海洋研究所海洋与气候研究中心, 青岛, 266061,国家海洋局第一海洋研究所海洋与气候研究中心, 青岛, 266061;青岛海洋科学与技术国家实验室区域海洋动力学与数值模拟功能实验室, 青岛, 266235,国家海洋局第一海洋研究所海洋与气候研究中心, 青岛, 266061,国家海洋局第一海洋研究所海洋与气候研究中心, 青岛, 266061;青岛海洋科学与技术国家实验室区域海洋动力学与数值模拟功能实验室, 青岛, 266235,国家海洋局第一海洋研究所海洋与气候研究中心, 青岛, 266061 |
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| 基金项目： | The National Basic Research Program (973 Program) of China under contract No. 2012CB955601; the National Natural Science Foundation of China under contract Nos 41576028 and 41306032; the NSFC Shandong Joint Fund for Marine Science Research Centers under contract No. U1606405; the Basic Scientific Research Fund for National Public Institutes of China under contract Nos GY2010T02 and GY2014G27. |
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| 摘 要： | The ear-shaped thermal front(ESTF), formed by the convergence of the Yellow Sea Warm Current(YSWC) and the Shandong Coastal Current(SCC), is a very important oceanic phenomenon in the Yellow Sea(YS) in winter. In situ measurements and reanalysis datasets all demonstrate that the ESTF has been weakening during1950s–1990s, and a similar weakening trend is also found in winter monsoon over the YS. Numerical experiments show that the weakening of winter monsoon can induce an anomalous circulation in the YS on multi-decadal timescale with northward anomalous currents along China's coast and southward anomalous currents in the central YS—generally opposite to seasonal mean circulation. The anomalous circulation causes slowdown of the YSWC and the SCC, and thus weakens the ESTF. Since the ESTF plays important roles in regional ocean dynamics and air-sea interactions, its weakening has important implications for regional climate in the YS in winter.
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| 关 键 词： | 温度锋面 黄海 环流 季风 多年代际变化 |
| 收稿时间： | 2016/2/16 0:00:00 |
Dramatic weakening of the ear-shaped thermal front in the Yellow Sea during 1950s-1990s |
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| Tan,FANG Yue,LIU Baochao,SUN Shuangwen and WANG Huiwu.Dramatic weakening of the ear-shaped thermal front in the Yellow Sea during 1950s-1990s[J].Acta Oceanologica Sinica,2017,36(5):51-56. |
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| Authors: | Tan FANG Yue LIU Baochao SUN Shuangwen and WANG Huiwu |
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| Institution: | College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266100, China;Center for Ocean and Climate Research, The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China,Center for Ocean and Climate Research, The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266235, China,Center for Ocean and Climate Research, The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China,Center for Ocean and Climate Research, The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266235, China and Center for Ocean and Climate Research, The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China |
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| Abstract: | The ear-shaped thermal front (ESTF), formed by the convergence of the Yellow Sea Warm Current (YSWC) and the Shandong Coastal Current (SCC), is a very important oceanic phenomenon in the Yellow Sea (YS) in winter. In situ measurements and reanalysis datasets all demonstrate that the ESTF has been weakening during 1950s-1990s, and a similar weakening trend is also found in winter monsoon over the YS. Numerical experiments show that the weakening of winter monsoon can induce an anomalous circulation in the YS on multi-decadal timescale with northward anomalous currents along China''s coast and southward anomalous currents in the central YS—generally opposite to seasonal mean circulation. The anomalous circulation causes slowdown of the YSWC and the SCC, and thus weakens the ESTF. Since the ESTF plays important roles in regional ocean dynamics and air-sea interactions, its weakening has important implications for regional climate in the YS in winter. |
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| Keywords: | thermal front Yellow Sea circulation monsoon multi-decadal variability |
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