Coupling ocean-atmosphere intensity determines ocean chlorophyll-induced SST change in the tropical Pacific

doi:10.1007/s00382-021-05666-3

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

	Coupling ocean-atmosphere intensity determines ocean chlorophyll-induced SST change in the tropical Pacific
	Tian, Feng 1,2,3,4; Zhang, Rong-Hua 1,2,3,4,7; Wang, Xiujun 5,6
刊名	CLIMATE DYNAMICS
	2021-02-06
页码	21
ISSN号	0930-7575
DOI	10.1007/s00382-021-05666-3
通讯作者	Zhang, Rong-Hua(rzhang@qdio.ac.cn)
英文摘要	Phytoplankton pigments (e.g., chlorophyll-a) absorb solar radiation in the upper ocean and induce a pronounced radiant heating effect (chlorophyll effect) on the climate. However, the ocean chlorophyll-induced heating effect on the mean climate state in the tropical Pacific has not been understood well. Here, a hybrid coupled model (HCM) of the atmosphere, ocean physics and biogeochemistry is used to investigate the chlorophyll effect on sea surface temperature (SST) in the eastern equatorial Pacific; a tunable coefficient, alpha, is introduced to represent the coupling intensity between the atmosphere and ocean in the HCM. The modeling results show that the chlorophyll effect on the mean-state SST is sensitively dependent on alpha (the coupling intensity). At weakly represented coupling intensity (0 <= alpha < 1.01), the chlorophyll effect tends to induce an SST cooling in the eastern equatorial Pacific, whereas an SST warming emerges at the strongly represented coupling intensity (alpha >= 1.01). Thus, a threshold exists for the coupling intensity (about alpha = 1.01) at which the sign of SST responses can change. Mechanisms and processes are illustrated to understand the different SST responses. In the weak coupling cases, indirect dynamical cooling processes (the adjustment of ocean circulation, enhanced vertical mixing, and upwelling) tend to dominate the SST cooling. In the strong coupling cases, the persistent warming induced by chlorophyll in the southern subtropical Pacific tends to induce cross-equatorial northerly winds, which shifts to anomalous westerly winds in the eastern equatorial Pacific, consequently reducing the evaporative cooling and weakening indirect dynamical cooling; eventually, SST warming maintains in the eastern equatorial Pacific. These results provide new insights into the biogeochemical feedback on the climate and bio-physical interactions in the tropical Pacific.
资助项目	National Natural Science Foundation of China (NFSC)[42006001] ; National Natural Science Foundation of China (NFSC)[42030410] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42040100] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42040103] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB 40000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19060102] ; National Key Research and Development Program of China[2017YFC1404102] ; National Key Research and Development Program of China[2017YFC1404100] ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1406402] ; China Postdoctoral Science Foundation[2019M662453] ; Qingdao postdoctoral application research project
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000615560100005
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/169748]
专题	海洋研究所_海洋环流与波动重点实验室
通讯作者	Zhang, Rong-Hua
作者单位	1.Univ Chinese Acad Sci, Beijing 10029, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol, Lab Ocean & Climate Dynam, Qingdao 266237, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 4.Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Inst Oceanol, Qingdao 266071, Peoples R China 5.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing 100875, Peoples R China 6.Joint Ctr Global Change Studies, Beijing 100875, Peoples R China 7.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Tian, Feng,Zhang, Rong-Hua,Wang, Xiujun. Coupling ocean-atmosphere intensity determines ocean chlorophyll-induced SST change in the tropical Pacific[J]. CLIMATE DYNAMICS,2021:21.
APA	Tian, Feng,Zhang, Rong-Hua,&Wang, Xiujun.(2021).Coupling ocean-atmosphere intensity determines ocean chlorophyll-induced SST change in the tropical Pacific.CLIMATE DYNAMICS,21.
MLA	Tian, Feng,et al."Coupling ocean-atmosphere intensity determines ocean chlorophyll-induced SST change in the tropical Pacific".CLIMATE DYNAMICS (2021):21.