DOI: 10.1175/JCLI-D-11-00291.1
Scopus记录号: 2-s2.0-84862739892
论文题名: Water mass analysis of effect of climate change on air-sea CO 2 fluxes: The Southern Ocean
作者: Séférian R. ; Iudicone D. ; Bopp L. ; Roy T. ; Madec G.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 11 起始页码: 3894
结束页码: 3908
语种: 英语
Scopus关键词: Anthropogenic carbon
; Atmosphere-ocean interactions
; Atmospheric CO
; Biogeochemical models
; Carbon fluxes
; Carbon uptake
; Climate sensitivity
; Coupled Model Intercomparison Project
; Earth's climate
; Global marines
; Key factors
; Marine carbon cycle
; Ocean dynamics
; Pre-industrial
; Role of water
; Sensitivity Simulation
; Southern ocean
; Water mass
; Water mass analysis
; Water mass structure
; Carbon
; Climate change
; Computer simulation
; Feedback
; Forestry
; Ocean habitats
; Oceanography
; Carbon dioxide
; atmosphere-hydrosphere interaction
; biogeochemistry
; carbon cycle
; carbon dioxide
; carbon flux
; climate change
; climate effect
; climate feedback
; climate modeling
; intermediate water
; sensitivity analysis
; Southern Ocean
英文摘要: Impacts of climate change on air-sea CO 2 exchange are strongly region dependent, particularly in the Southern Ocean. Yet, in the Southern Ocean the role of water masses in the uptake of anthropogenic carbon is still debated. Here, a methodology is applied that tracks the carbon flux of each Southern Ocean water mass in response to climate change. A global marine biogeochemical model was coupled to a climate model, making 140-yr Coupled Model Intercomparison Project phase 5 (CMIP5)-type simulations, where atmospheric CO 2 increased by 1% yr -1 to 4 times the preindustrial concentration (4 × CO 2). Impacts of atmospheric CO 2 (carbon-induced sensitivity) and climate change (climate-induced sensitivity) on the water mass carbon fluxes have been isolated performing two sensitivity simulations. In the first simulation, the atmospheric CO 2 influences solely the marine carbon cycle, while in the second simulation, it influences both the marine carbon cycle and earth's climate. At 4 × CO 2, the cumulative carbon uptake by the Southern Ocean reaches 278 PgC, 53% of which is taken up by modal and intermediate water masses. The carbon-induced and climate-induced sensitivities vary significantly between the water masses. The carbon-induced sensitivities enhance the carbon uptake of the water masses, particularly for the denser classes. But, enhancement strongly depends on the water mass structure. The climate-induced sensitivities either strengthen or weaken the carbon uptake and are influenced by local processes through changes in CO 2 solubility and stratification, and by large-scale changes in outcrop surface (OS) areas. Changes in OS areas account for 45% of the climateinduced reduction in the Southern Ocean carbon uptake and are a key factor in understanding the future carbon uptake of the Southern Ocean. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52375
Appears in Collections: 气候变化事实与影响
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作者单位: LSCE/IPSL, Paris, France; CNRM-GAME, Météo-France, CNRS, Toulouse, France; Stazione Zoologica Anton Dohrn, Naples, Italy; IPSL/LOCEAN, Paris, France; NOC, Southampton, United Kingdom
Recommended Citation:
Séférian R.,Iudicone D.,Bopp L.,et al. Water mass analysis of effect of climate change on air-sea CO 2 fluxes: The Southern Ocean[J]. Journal of Climate,2012-01-01,25(11)