气候变化领域集成服务门户(CCPortal): Local and Remote Influences on the Heat Content of Southern Ocean Mode Water Formation Regions

CCPortal

DOI	10.1029/2020JC016585
	Local and Remote Influences on the Heat Content of Southern Ocean Mode Water Formation Regions
	Boland E.J.D.; Jones D.C.; Meijers A.J.S.; Forget G.; Josey S.A.
发表日期	2021
ISSN	21699275
卷号	126 期号:4
英文摘要	The Southern Ocean (SO) is a crucial region for the global ocean uptake of heat and carbon. There are large uncertainties in the observations of fluxes of heat and carbon between the atmosphere and the ocean mixed layer, which lead to large uncertainties in the amount entering into the global overturning circulation. In order to better understand where and when fluxes of heat and momentum have the largest impact on near-surface heat content, we use an adjoint model to calculate the linear sensitivities of heat content in SO mode water formation regions (MWFRs) to surface fluxes. We find that the heat content of these regions is, in all three basins, most sensitive to same-winter, local heat fluxes, and to local and remote wind one to eight years (the maximum lead-time of our simulations) previously. This is supported by sensitivities to potential temperature changes, which reveal the sources of the MWFRs as well as dynamic links with boundary current regions and the Antarctic Circumpolar Current. We use the adjoint sensitivity fields to design a set of targeted perturbation experiments, allowing us to examine the linear and non-linear responses of the heat content to changes in surface forcing. In these targeted experiments, the heat content is sensitive to both temperature changes and mixed layer volume changes in roughly equal magnitude. © 2021. The Authors.
英文关键词	adjoint; feat flux; heat content; sensitivity; Southern Ocean; wind stress
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186391
作者单位	British Antarctic Survey, Cambridge, United Kingdom; Massachusetts Institute of Technology, Cambridge, MA, United States; National Oceanography Centre, Southampton, United Kingdom
推荐引用方式 GB/T 7714	Boland E.J.D.,Jones D.C.,Meijers A.J.S.,et al. Local and Remote Influences on the Heat Content of Southern Ocean Mode Water Formation Regions[J],2021,126(4).
APA	Boland E.J.D.,Jones D.C.,Meijers A.J.S.,Forget G.,&Josey S.A..(2021).Local and Remote Influences on the Heat Content of Southern Ocean Mode Water Formation Regions.Journal of Geophysical Research: Oceans,126(4).
MLA	Boland E.J.D.,et al."Local and Remote Influences on the Heat Content of Southern Ocean Mode Water Formation Regions".Journal of Geophysical Research: Oceans 126.4(2021).