气候变化领域集成服务门户(CCPortal): Ocean-Only FAFMIP: Understanding Regional Patterns of Ocean Heat Content and Dynamic Sea Level Change

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DOI	10.1029/2019MS002027
	Ocean-Only FAFMIP: Understanding Regional Patterns of Ocean Heat Content and Dynamic Sea Level Change
	Todd A.; Zanna L.; Couldrey M.; Gregory J.; Wu Q.; Church J.A.; Farneti R.; Navarro-Labastida R.; Lyu K.; Saenko O.; Yang D.; Zhang X.
发表日期	2020
ISSN	19422466
卷号	12 期号:8
英文摘要	There is large uncertainty in the future regional sea level change under anthropogenic climate change. Our study presents and uses a novel design of ocean general circulation model (OGCM) experiments to investigate the ocean's response to surface buoyancy and momentum flux perturbations without atmosphere-ocean feedbacks (e.g., without surface restoring or bulk formulae), as part of the Flux-Anomaly-Forced Model Intercomparison Project (FAFMIP). In an ensemble of OGCMs forced with identical surface flux perturbations, simulated dynamic sea level (DSL) and ocean heat content (OHC) change demonstrate considerable disagreement. In the North Atlantic, the disagreement in DSL and OHC change between models is mainly due to differences in the residual (resolved and eddy) circulation change, with a large spread in the Atlantic meridional overturning circulation (AMOC) weakening (20–50%). In the western North Pacific, OHC change is similar among the OGCM ensemble, but the contributing physical processes differ. For the Southern Ocean, isopycnal and diapycnal mixing change dominate the spread in OHC change. In addition, a component of the atmosphere-ocean feedbacks are quantified by comparing coupled, atmosphere-ocean GCM (AOGCM) and OGCM FAFMIP experiments with consistent ocean models. We find that there is 10% more AMOC weakening in AOGCMs relative to OGCMs, since the extratropical North Atlantic SST cooling due to heat redistribution amplifies the surface heat flux perturbation. This component of the atmosphere-ocean feedbacks enhances the pattern of North Atlantic OHC and DSL change, with relatively stronger increases and decreases in the tropics and extratropics, respectively. © 2020. The Authors.
英文关键词	Dynamic Sea Level; Ocean Climate Change; Ocean Heat Uptake
语种	英语
scopus关键词	Atmospheric thermodynamics; Digital subscriber lines; Enthalpy; Heat flux; Sea level; Anthropogenic climate changes; Atlantic meridional overturning circulations; Circulation changes; Model inter comparisons; Ocean general circulation models; Regional sea level changes; Surface heat fluxes; Western North Pacific; Climate change; air-sea interaction; anthropogenic effect; buoyancy forcing; climate change; climate feedback; design; experimental study; general circulation model; heat flux; meridional circulation; perturbation; sea level change; uncertainty analysis; Atlantic Ocean; Atlantic Ocean (North); Pacific Ocean; Pacific Ocean (North); Southern Ocean
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156674
作者单位	Department of Physics, University of Oxford, Oxford, United Kingdom; Courant Institute, New York University, New York, NY, United States; National Centre for Atmospheric Science, University of Reading, Reading, United Kingdom; Met Office Hadley Centre, Exeter, United Kingdom; Climate Change Research Centre, University of New South Wales, Sydney, NSW, Australia; Earth System Physics, Abdus Salam International Centre for Theoretical Physics, Trieste, Italy; ESFM Doctorate School, Università degli Studi di Trieste, Trieste, Italy; Centre for Southern Hemisphere Oceans Research (CSHOR), CSIRO Oceans and Atmosphere, Hobart, TAS, Australia; Canadian Centre for Climate Modelling and Analysis, Victoria, BC, Canada
推荐引用方式 GB/T 7714	Todd A.,Zanna L.,Couldrey M.,et al. Ocean-Only FAFMIP: Understanding Regional Patterns of Ocean Heat Content and Dynamic Sea Level Change[J],2020,12(8).
APA	Todd A..,Zanna L..,Couldrey M..,Gregory J..,Wu Q..,...&Zhang X..(2020).Ocean-Only FAFMIP: Understanding Regional Patterns of Ocean Heat Content and Dynamic Sea Level Change.Journal of Advances in Modeling Earth Systems,12(8).
MLA	Todd A.,et al."Ocean-Only FAFMIP: Understanding Regional Patterns of Ocean Heat Content and Dynamic Sea Level Change".Journal of Advances in Modeling Earth Systems 12.8(2020).