气候变化领域集成服务门户(CCPortal): Impact of ocean model resolution on understanding the delayed warming of the Southern Ocean

CCPortal

DOI	10.1088/1748-9326/abbc3e
	Impact of ocean model resolution on understanding the delayed warming of the Southern Ocean
	Bilgen S.I.; Kirtman B.P.
发表日期	2020
ISSN	17489318
卷号	15 期号:11
英文摘要	Currently available historical climate change simulations indicate a relatively delayed Southern Ocean warming, particularly poleward of the Antarctic Circumpolar Current (ACC) compared much of the rest of the globe. However, even this simulated delayed warming is inconsistent with observational estimates which show a cooling trend poleward of the ACC for the period 1979–2014. A fully coupled model run at two resolutions, i.e. ocean eddy parameterized and ocean eddy resolving, driven by historical and fixed CO2 concentration is used to investigate forced trends south of the ACC. We analyze the 1961–2005 Southern Ocean surface and upper ocean temperatures trends simulated by the model and observational estimates to understand the observed trends in the SO. At both resolutions, the models successfully reproduce the observed warming response for the northern flank of the ACC. The eddy resolving simulations, however, are able to reproduce the observed near Antarctic cooling in contrast to the eddy parameterized simulation which shows a warming trend. The cause of this inconsistency between the observations and the ocean eddy parameterized climate models is still a matter of debate, and we show here results that suggest resolved ocean meso-scale processes may be an integral part of capturing the observed trends in the Southern Ocean. © 2020 The Author(s). Published by IOP Publishing Ltd
英文关键词	Delayed warming; Eddy resolving and eddy parameterized models; Greenhouse gas forcing; Southern Ocean climate; Southern Ocean SST trends
语种	英语
scopus关键词	Climate change; Ocean currents; Parameterization; Antarctic circumpolar current; Climate change simulations; CO2 concentration; Cooling trends; Eddy-resolving simulations; Fully-coupled model; Parameterized; Southern ocean; Climate models; air-sea interaction; carbon dioxide; cooling; eddy covariance; large eddy simulation; parameterization; sea surface temperature; trend analysis; upper ocean; Antarctic Circumpolar Current; Southern Ocean
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153527
作者单位	Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, United States
推荐引用方式 GB/T 7714	Bilgen S.I.,Kirtman B.P.. Impact of ocean model resolution on understanding the delayed warming of the Southern Ocean[J],2020,15(11).
APA	Bilgen S.I.,&Kirtman B.P..(2020).Impact of ocean model resolution on understanding the delayed warming of the Southern Ocean.Environmental Research Letters,15(11).
MLA	Bilgen S.I.,et al."Impact of ocean model resolution on understanding the delayed warming of the Southern Ocean".Environmental Research Letters 15.11(2020).