DOI: 10.1002/2015MS000462
Scopus记录号: 2-s2.0-84959504689
论文题名: Multidecadal change in the dissolved inorganic carbon in a long-term ocean state estimation
作者: Doi T ; , Osafune S ; , Sugiura N ; , Kouketsu S ; , Murata A ; , Masuda S ; , Toyoda T
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2015
卷: 7, 期: 4 起始页码: 1885
结束页码: 1900
语种: 英语
英文关键词: Carbon
; Carbon dioxide
; Climate change
; Ecology
; Ecosystems
; 4-D-VAR
; Carbon cycles
; Decadal change
; Ecosystem model
; Global ocean
; Oceanography
; carbon cycle
; carbon dioxide
; carbon flux
; data assimilation
; decadal variation
; dissolved inorganic carbon
; four-dimensional modeling
; Green function
; long-term change
; oceanic circulation
; oceanic general circulation model
; pelagic ecosystem
; Atlantic Ocean
; Indian Ocean
; Pacific Ocean
英文摘要: By using a four-dimensional variational data assimilation system capable of estimating physical and biogeochemical variables for the global ocean, we investigated multidecadal changes in the dissolved inorganic carbon (DIC) in the ocean. The system was newly constructed with a pelagic ecosystem model and an oceanic general circulation model to integrate available ocean observations obtained with a wide range of observation tools. The distribution of estimated DIC was by and large consistent with previous reports. We validated the changes in DIC along the World Ocean Circulation Experiment (WOCE) Hydrographic Program sections. The correlation coefficients of the modeled versus observed decadal difference patterns of DIC ranged from 0.25 to 0.51 in the Pacific Ocean, from 0.36 to 0.62 in the Atlantic Ocean, and from 0.23 to 0.57 in the Indian Ocean, and were significant at the 95% confidence level. Thus, at basin scale, the reproducibility of long-term climate change was similar. Estimation of vertical DIC fluxes in each basin showed that the fluxes changed on a multidecadal time scale in our system. These changes were possibly due to changes in the dynamical state of CO2 absorption and to changes in ocean circulation. Our integrated data set on the basis of a dynamically self-consistent ocean state is a promising tool for examining long-term changes in the ocean carbon cycle. Key Points: The multidecadal ocean state, including DIC distribution, was estimated Parameters for biological variables were optimized by Green's function approach Multidecadal change in the dissolved inorganic carbon was identified. © 2015. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75972
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
There are no files associated with this item.
作者单位: Research and Development Center for Global Change, Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan; Oceanography and Geochemistry Research Department, Meteorological Research Institute, Japan Meteorological Agency, Tsukuba, Japan
Recommended Citation:
Doi T,, Osafune S,, Sugiura N,et al. Multidecadal change in the dissolved inorganic carbon in a long-term ocean state estimation[J]. Journal of Advances in Modeling Earth Systems,2015-01-01,7(4)