Characteristics of surface physical and biogeochemical parameters within mesoscale eddies in the Southern Ocean

doi:10.5194/bg-20-4857-2023

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

	Characteristics of surface physical and biogeochemical parameters within mesoscale eddies in the Southern Ocean
	Liu, Qian 1,2; Liu, Yingjie 1; Li, Xiaofeng 1
刊名	BIOGEOSCIENCES
	2023-12-07
卷号	20 期号:23 页码:4857-4874
ISSN号	1726-4170
DOI	10.5194/bg-20-4857-2023
通讯作者	Liu, Yingjie(yjliu@qdio.ac.cn)
英文摘要	Using satellite sea surface temperature (SST) and chlorophyll a (Chl a ) as well as observation-based reconstruction of dissolved inorganic carbon (DIC) and partial pressure of CO 2 ( p CO 2 ) from 1996 to 2015, we investigate the modulation mechanisms of eddies on surface physical and biogeochemical parameters in the Southern Ocean (SO). About one-quarter of eddies are observed to be "abnormal" (cold anticyclonic and warm cyclonic eddies) in the SO, which show opposite SST signatures to "normal" eddies (warm anticyclonic and cold cyclonic eddies). The study finds that the modification of abnormal eddies on physical and biogeochemical parameters is significant and differs from normal eddies due to the combined effects of eddy pumping and eddy-induced Ekman pumping. Normal and abnormal eddies have opposite DIC anomalies, contrary to the SST anomalies. Moreover, the contributions of abnormal eddies to p CO 2 are about 2.7 times higher than normal eddies in regions where abnormal eddies dominate. Although Chl a anomalies in normal and abnormal eddies show similar patterns and signals, eddy-induced Ekman pumping attenuates the magnitudes of Chl a anomalies within abnormal eddies. In addition to the variation of the same parameter within different eddies, the dominant eddy-driven mechanisms for different parameters within the same kind of eddies also vary. The strength of the eddy stirring effect on different parameters is the primary factor causing these differences, attributed to variations in the magnitudes of horizontal parameter gradients. Understanding the role of abnormal eddies and the complexity of eddy-driven processes is crucial for accurately estimating the influence of mesoscale eddies on physical and biogeochemical processes in the SO, which is essential for simulating and predicting biogeochemical dynamics and carbon cycling in the region.
资助项目	Qingdao National Laboratory for Marine Science and Technology, the special fund of Shandong Province[2022QNLM050301-2] ; Natural Science Foundation of Shandong Province[ZR2020MD083] ; National Natural Science Foundation of China[U2006211] ; National Natural Science Foundation of China[42306194] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000]
WOS关键词	SATELLITE-OBSERVATIONS ; HEAT FLUXES ; CHLOROPHYLL ; VARIABILITY ; CIRCULATION ; SIGNATURE ; PHYTOPLANKTON ; PRODUCTIVITY ; TEMPERATURE ; ALGORITHM
WOS研究方向	Environmental Sciences & Ecology ; Geology
语种	英语
出版者	COPERNICUS GESELLSCHAFT MBH
WOS记录号	WOS:001168823000001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/184547]
专题	海洋研究所_海洋环流与波动重点实验室
通讯作者	Liu, Yingjie
作者单位	1.Chinese Acad Sci, CAS Key Lab Ocean Circulat & Waves, Inst Oceanol, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, Qian,Liu, Yingjie,Li, Xiaofeng. Characteristics of surface physical and biogeochemical parameters within mesoscale eddies in the Southern Ocean[J]. BIOGEOSCIENCES,2023,20(23):4857-4874.
APA	Liu, Qian,Liu, Yingjie,&Li, Xiaofeng.(2023).Characteristics of surface physical and biogeochemical parameters within mesoscale eddies in the Southern Ocean.BIOGEOSCIENCES,20(23),4857-4874.
MLA	Liu, Qian,et al."Characteristics of surface physical and biogeochemical parameters within mesoscale eddies in the Southern Ocean".BIOGEOSCIENCES 20.23(2023):4857-4874.