Observed structural relationships between ocean chlorophyll variability and its heating effects on the ENSO

doi:10.1007/s00382-019-04844-8

IOCAS-IR > 海洋环流与波动重点实验室

	Observed structural relationships between ocean chlorophyll variability and its heating effects on the ENSO
	Zhang, Rong-Hua1,2,3,4,5 ; Tian, Feng 1,2,5; Zhi, Hai 6; Kang, Xianbiao 7
	2019-11-01
发表期刊	CLIMATE DYNAMICS
ISSN	0930-7575
卷号	53 期号:9-10 页码:5165-5186
通讯作者	Zhang, Rong-Hua(rzhang@qdio.ac.cn)
摘要	Ocean chlorophyll (Chl)-induced heating can affect the climate system through the penetration of solar radiation in the upper ocean. Currently, the ocean biology-induced heating (OBH) feedback effects on the climate in the tropical Pacific are still not well understood, and the mechanisms regarding how SST is modulated remain elusive. In this paper, chlorophyll (Chl) data from satellites are combined with physical fields from Argo profiles to estimate OBH-related fields, including the penetration depth (H-p) and the ocean mixed-layer (ML) depth (H-m). In addition, some directly related heating terms with H-m and H-p are diagnosed, including the absorbed solar radiation component within the ML (denoted as Q(abs)), the rate of ML temperature changes that are directly induced by Q(abs) (denoted as R-sr=Q(abs)/(rho 0CpHm)), and the portion of solar radiation that penetrates through the bottom of the ML (denoted as Q(pen)). The structural relationships between these related fields are examined to illustrate how these heating terms are affected by H-p and H-m. The extent to which R-sr and Q(pen) are modulated by H-p is strikingly different during ENSO cycles. In the western-central equatorial Pacific, inter-annual variations in H-p tend to be out of phase with those in H-m. A decrease (increase) in Q(abs) from a positive (negative) H-p anomaly during El Nino (La Nina) tends to be offset by a negative (positive) H-m anomaly. Thus, R-sr is not closely related with H-p, even though Q(abs) is highly correlated with H-p, indicating that the direct thermal effect through Q(abs) is not a dominant factor that affects the SST. In contrast, the inter-annual variability of Q(pen) in the region is significantly enhanced by that of H-p, with their high positive correlation. The H-p-induced differential heating in the ML and subsurface layers from the Q(pen) and Q(abs) terms modifies the thermal contrast, stratification and vertical mixing, which represent a dominant indirect ocean dynamical effect on the SST. The revealed relationships between these related fields provide an observational basis for gaining structural insights into the OBH feedback effects and validating model simulations in the tropical Pacific.
关键词	Chlorophyll variability Ocean biology-induced heating ENSO modulations The penetration depth and mixed layer depth Satellite and Argo data
DOI	10.1007/s00382-019-04844-8
收录类别	SCI
语种	英语
资助项目	National Programme on Global Change and Air-Sea Interaction[GASI-IPOVAI-06] ; Chinese Academy of Sciences[XDA19060102] ; National Natural Science Foundation of China[41690122(41690120)] ; National Natural Science Foundation of China[41490644(41490640)] ; National Natural Science Foundation of China[41421005] ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1406402] ; Taishan Scholarship ; Foundation of Key Laboratory of Ocean Circulation and Waves (KLOCW), IOCAS[KLOCW1601] ; Foundation of KLOCW, IOCAS[KLOCW1809]
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000493469900002
出版者	SPRINGER
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/165062
专题	海洋环流与波动重点实验室
通讯作者	Zhang, Rong-Hua
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao 266071, Shandong, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Shandong, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, Peoples R China 4.Qingdao Natl Lab Marine Sci & Technol, Qingdao 266237, Shandong, Peoples R China 5.Univ Chinese Acad Sci, Beijing 10029, Peoples R China 6.Nanjing Univ Informat Sci & Technol, Coll Atmospher Sci, Nanjing 210044, Jiangsu, Peoples R China 7.Civil Aviat Flight Univ China, Coll Air Traff Management, Guanghan 618307, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Zhang, Rong-Hua,Tian, Feng,Zhi, Hai,et al. Observed structural relationships between ocean chlorophyll variability and its heating effects on the ENSO[J]. CLIMATE DYNAMICS,2019,53(9-10):5165-5186.
APA	Zhang, Rong-Hua,Tian, Feng,Zhi, Hai,&Kang, Xianbiao.(2019).Observed structural relationships between ocean chlorophyll variability and its heating effects on the ENSO.CLIMATE DYNAMICS,53(9-10),5165-5186.
MLA	Zhang, Rong-Hua,et al."Observed structural relationships between ocean chlorophyll variability and its heating effects on the ENSO".CLIMATE DYNAMICS 53.9-10(2019):5165-5186.

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