Projected Future Changes of Meridional Heat Transport and Heat Balance of the Indian Ocean

doi:10.1029/2019GL086803

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	Projected Future Changes of Meridional Heat Transport and Heat Balance of the Indian Ocean
	Ma, Jie 2,3,4,5,6; Feng, Ming 4,7; Lan, Jian 1,6; Hu, Dunxin 2,3,5,6
刊名	GEOPHYSICAL RESEARCH LETTERS
	2020-02-28
卷号	47 期号:4 页码:9
ISSN号	0094-8276
DOI	10.1029/2019GL086803
通讯作者	Feng, Ming(ming.feng@csiro.au)
英文摘要	An ocean downscaling model product, forced under the Representative Concentration Pathway 8.5 future climate change scenario, has been used to understand the ocean heat balance of the Indian Ocean in a warming climate. Toward the end of the 21th century, the model simulates a significant reduction of Indonesian throughflow (ITF) transport, which reduces the Pacific to Indian Ocean heat transport by 0.20 PW, whereas across 32 degrees S in the Southern Indian Ocean (SIO), the southward heat transport is reduced by 0.28 PW, mainly contributed from the weakening western boundary current, the Agulhas Current (0.21 PW). The projected weakening of the Agulhas Current is to compensate for the reduction of the ITF transport, with additional contribution from the spin-down of the SIO subtropical gyre. Thus, being amplified by the ocean circulation changes in the SIO, the projected Indian Ocean warming trend will be faster than the direct air-sea heat flux input. Plain Language Summary During the global mean temperature warming "hiatus" period during 1998-2014, significant warming of the Southern Indian Ocean is closely related to the increased Indonesian throughflow heat transport. However, under enhanced greenhouse warming, both climate models and our ocean downscaling model project a remarkable weakening trend of the ITF. In this study, we have found that the projected Indian Ocean warming trend is faster than the input from direct air-sea heat flux, despite the reduction of the ITF heat transport. This can be explained by the more significant weakening of the Agulhas Current transport in a warming climate, which reduces the southward heat transport out of the Indian Ocean. The weakening of the Agulhas Current is due to the ITF transport reduction and the spin-down of the Southern Indian Ocean circulation.
资助项目	CSIRO Oceans and Atmosphere ; Bluelink team ; National Natural Science Foundation of China (NNSFC)[41330963] ; National Natural Science Foundation of China (NNSFC)[41676001] ; National Natural Science Foundation of China (NNSFC)[U1606402] ; Centre for Southern Hemisphere Oceans Research (CSHOR)
WOS研究方向	Geology
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000529120100056
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/167241]
专题	海洋研究所_海洋环流与波动重点实验室
通讯作者	Feng, Ming
作者单位	1.Ocean Univ China, Phys Oceanog Lab, Qingdao, Peoples R China 2.Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Inst Oceanol, Qingdao, Peoples R China 3.Univ Chinese Acad Sci, Coll Marine Sci, Beijing, Peoples R China 4.CSIRO Oceans & Atmosphere, Crawley, WA, Australia 5.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China 6.Qingdao Natl Lab Marine Sci & Technol, Qingdao, Peoples R China 7.Ctr Southern Hemisphere Oceans Res, Hobart, Tas, Australia
推荐引用方式 GB/T 7714	Ma, Jie,Feng, Ming,Lan, Jian,et al. Projected Future Changes of Meridional Heat Transport and Heat Balance of the Indian Ocean[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(4):9.
APA	Ma, Jie,Feng, Ming,Lan, Jian,&Hu, Dunxin.(2020).Projected Future Changes of Meridional Heat Transport and Heat Balance of the Indian Ocean.GEOPHYSICAL RESEARCH LETTERS,47(4),9.
MLA	Ma, Jie,et al."Projected Future Changes of Meridional Heat Transport and Heat Balance of the Indian Ocean".GEOPHYSICAL RESEARCH LETTERS 47.4(2020):9.