| 潮汐对瞬态气候响应模拟的影响研究 |
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| 引用本文： | 于溢,刘海龙,林鹏飞,兰健.潮汐对瞬态气候响应模拟的影响研究[J].海洋学报(英文版),2020,39(1):52-62. |
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| 作者姓名： | 于溢 刘海龙 林鹏飞 兰健 |
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| 作者单位： | 卫星海洋环境动力学国家重点实验室, 自然资源部第二海洋研究所, 杭州, 310012;地球科学学院, 中国科学院大学, 北京, 100049,大气科学和地球流体力学数值模拟国家重点实验室, 中国科学院大气物理研究所, 北京, 100029;海洋与大气学院, 中国海洋大学, 青岛, 266003;Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China,大气科学和地球流体力学数值模拟国家重点实验室, 中国科学院大气物理研究所, 北京, 100029;海洋与大气学院, 中国海洋大学, 青岛, 266003,College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266003, China |
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| 基金项目： | The National Key Research and Development Program for Developing Basic Sciences under contract Nos 2016YFC1401401 and 2016YFC1401601; the "Strategic Priority Research Program" of the Chinese Academy of Sciences under contract Nos XDA11010304, XDA05110302 and XDC01040100; the National Natural Science Foundation of China under contract Nos 41576026, 41576025, 41776030 and 41931183. |
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| 摘 要： | In this study, the impact of oceanic processes on the sensitivity of transient climate change is investigated using two sets of coupled experiments with and without tidal forcing, which are termed Exp_Tide and Exp_Control,respectively. After introducing tidal forcing, the transient climate response(TCR) decreases from 2.32 K to 1.90 K,and the surface air temperature warming at high latitudes decreases by 29%. Large ocean heat uptake efficiency and heat storage can explain the low TCR in Exp_Tide. Approximately 21% more heat is stored in the ocean in Exp_Tide(1.10×10~(24) J) than in Exp_Control(0.91×10~(24) J). Most of the large ocean warming occurs in the upper 1 000 m between 60°S and 60°N, primarily in the Atlantic and Southern Oceans. This ocean warming is closely related to the Atlantic Meridional Overturning Circulation(AMOC). The initial transport at mid-and high latitudes and the decline in the AMOC observed in Exp_Tide are both larger than those observed in Exp_Control. The spatial structures of AMOC are also different with and without tidal forcing in present experiments. The AMOC in Exp_Tide has a large northward extension. We also investigated the relationship between AMOC and TCR suggested by previous studies using the present experiments.
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| 关 键 词： | 潮汐 瞬态气候响应 海洋热吸收 北大西洋经向翻转环流 |
| 收稿时间： | 2018/10/28 0:00:00 |
The impact of oceanic processes on the transient climate response: a tidal forcing experiment |
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| Yu Yi,Liu Hailong,Lin Pengfei and Lan Jian.The impact of oceanic processes on the transient climate response: a tidal forcing experiment[J].Acta Oceanologica Sinica,2020,39(1):52-62. |
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| Authors: | Yu Yi Liu Hailong Lin Pengfei and Lan Jian |
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| Institution: | Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 510275, China;State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China;State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;College of Earth Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China;State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;College of Earth Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266003, China |
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| Abstract: | In this study, the impact of oceanic processes on the sensitivity of transient climate change is investigated using two sets of coupled experiments with and without tidal forcing, which are termed Exp_Tide and Exp_Control, respectively. After introducing tidal forcing, the transient climate response (TCR) decreases from 2.32 K to 1.90 K, and the surface air temperature warming at high latitudes decreases by 29%. Large ocean heat uptake efficiency and heat storage can explain the low TCR in Exp_Tide. Approximately 21% more heat is stored in the ocean in Exp_Tide (1.10×1024J) than in Exp_Control (0.91×1024J). Most of the large ocean warming occurs in the upper 1 000 m between 60°S and 60°N, primarily in the Atlantic and Southern Oceans. This ocean warming is closely related to the Atlantic Meridional Overturning Circulation (AMOC). The initial transport at mid-and high latitudes and the decline in the AMOC observed in Exp_Tide are both larger than those observed in Exp_Control. The spatial structures of AMOC are also different with and without tidal forcing in present experiments. The AMOC in Exp_Tide has a large northward extension. We also investigated the relationship between AMOC and TCR suggested by previous studies using the present experiments. |
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| Keywords: | tidal forcing transient climate response ocean heat uptake Atlantic Meridional Overturning Circulation |
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