| Yu Yi,Liu Hailong,Lin Pengfei,Lan Jian. 2020. The impact of oceanic processes on the transient climate response: a tidal forcing experiment. Acta Oceanologica Sinica, 39(1):52－62 |
| The impact of oceanic processes on the transient climate response: a tidal forcing experiment |
| 潮汐对瞬态气候响应模拟的影响研究 |
| Received:October 28, 2018 |
| DOI：10.1007/s13131-019-1466-0 |
| Key words:tidal forcing transient climate response ocean heat uptake Atlantic Meridional Overturning Circulation |
| 中文关键词: 潮汐 瞬态气候响应 海洋热吸收 北大西洋经向翻转环流 |
| 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. |
| Author Name | Affiliation | E-mail | | Yu Yi | 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 | | | Liu Hailong | 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 | lhl@lasg.iap.ac.cn | | Lin Pengfei | 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 | | | Lan Jian | College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266003, China | |
|
| Hits: 1287 |
| Download times: 879 |
| 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. |
| 中文摘要: |
| 通过耦合模式进行敏感性数值试验，本文研究了潮汐对瞬态气候响应模拟的影响。在耦合模式中引入潮汐过程，瞬态气候响应从2.32K下降到1.90K，高纬度区域的表面气温增暖减弱了大约29%。潮汐试验的海洋热吸收（热容量）有明显地增加，这是导致瞬态气候响应减少的主要因素。由于潮汐的引入，潮汐试验存储的热量（1.10×1024J）比对照试验（0.91×1024J）增加了大约21%。在CO2增加的情景下，大部分热量储存在南北纬60度的上层1000m海洋，这一现象在北大西洋和南大洋尤为明显。研究发现，海洋增暖的过程与北大西洋经向翻转环流密切相关。潮汐试验的北大西洋经向翻转环流的初始和减少流量都大于对照试验，并且空间特征也有显著的区别。本文进一步研究了北大西洋经向翻转环流与瞬态气候影响的关系。 |
|
HTML
View Full Text
View/Add Comment Download reader |
| Close |
|
|
|
