DOI: 10.1175/JCLI-D-12-00184.s1
Scopus记录号: 2-s2.0-84884216756
论文题名: Twentieth-century oceanic carbon uptake and storage in CESM1(BGC)
作者: Long M.C. ; Lindsay K. ; Peacock S. ; Moore J.K. ; Doney S.C.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 18 起始页码: 6775
结束页码: 6800
语种: 英语
Scopus关键词: Climate variability
; Dissolution profiles
; Earth system model
; Interannual variability
; Intermediate depths
; Oceanic carbon uptake
; Relatively robust representations
; Southern Hemisphere
; Carbon
; Carbon dioxide
; Climatology
; Computer simulation
; Sea ice
; Oceanography
; air-sea interaction
; biogeochemistry
; carbon cycle
; carbon dioxide
; carbon sequestration
; teleconnection
; twentieth century
; Atlantic Ocean
; Atlantic Ocean (North)
; Southern Ocean
英文摘要: Ocean carbon uptake and storage simulated by the Community Earth System Model, version 1-Biogeochemistry [CESM1(BGC)], is described and compared to observations. Fully coupled and ocean-ice configurations are examined; both capture many aspects of the spatial structure and seasonality of surface carbon fields. Nearly ubiquitous negative biases in surface alkalinity result from the prescribed carbonate dissolution profile. The modeled sea-air CO2 fluxes match observationally based estimates over much of the ocean; significant deviations appear in the Southern Ocean. Surface ocean pCO2 is biased high in the subantarctic and low in the sea ice zone. Formation of the water masses dominating anthropogenic CO2 (Cant) uptake in the Southern Hemisphere is weak in the model, leading to significant negative biases in Cant and chlorofluorocarbon (CFC) storage at intermediate depths. Column inventories of Cant appear too high, by contrast, in the North Atlantic. In spite of the positive bias, this marks an improvement over prior versions of the model, which underestimated North Atlantic uptake. The change in behavior is attributable to a new parameterization of density-driven overflows. CESM1(BGC) provides a relatively robust representation of the ocean-carbon cycle response to climate variability. Statistical metrics of modeled interannual variability in sea-air CO2 fluxes compare reasonably well to observationally based estimates. The carbon cycle response to key modes of climate variability is basically similar in the coupled and forced ocean-ice models; however, the two differ in regional detail and in the strength of teleconnections. © 2013 American Meteorological Society. 资助项目: NSF, National Science Foundation
; DOE, U.S. Department of Energy
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51657
Appears in Collections: 气候变化事实与影响
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作者单位: Climate and Global Dynamics Division, National Center for Atmospheric Research, Boulder, CO, United States; Earth System Science, University of California, Irvine, Irvine, CA, United States; Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
Recommended Citation:
Long M.C.,Lindsay K.,Peacock S.,et al. Twentieth-century oceanic carbon uptake and storage in CESM1(BGC)[J]. Journal of Climate,2013-01-01,26(18)