DOI: 10.1002/2015GB005128
Scopus记录号: 2-s2.0-84946557243
论文题名: Anthropogenic CO2 uptake, transport, storage, and dynamical controls in the ocean imposed by the meridional overturning circulation: A modeling study
作者: Nakano H ; , Ishii M ; , Rodgers K ; B ; , Tsujino H ; , Yamanaka G
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2015
卷: 29, 期: 10 起始页码: 1706
结束页码: 1724
语种: 英语
英文关键词: anthropogenic CO2
; OGCM
; transport
Scopus关键词: anthropogenic source
; carbon budget
; carbon dioxide enrichment
; dynamic property
; meridional circulation
; modeling
; oceanic general circulation model
; storage
; transport process
; vertical movement
; Pacific Ocean
英文摘要: Using an ocean carbon cycle model embedded in an ocean general circulation model, we examine how the budget of anthropogenic CO2 (Cant) is controlled by ocean dynamics. To complement recent studies showing only vertically integrated budgets, we provide a step-by-step description by making use of three different coarse grainings of the full vertical resolution of the ocean model in our budget analysis. For the 11 subdomains of the global ocean, these coarse grainings are (1) a one-layer (vertically integrated) budget, (2) a three-layer budget, and (3) an 11-layer budget. We largely focus on the Pacific circulation. We identify and quantify substantial carbon transport associated with the subtropical cells (STCs), which are dominant contributors to the meridional overturning circulation in the upper ocean in the tropics and subtropics, as playing a fundamental role in governing the ocean interior distribution of Cant. The upper branch of the STCs transports Cant-rich water from the tropics to the subtropics, contributing to the precondition for the high Cant inventory in mode waters. The lower branch of the STCs carries about two thirds of the transported Cant back to the tropics, while it largely excludes Subtropical Mode Waters. This work implies that the reemergence of Cant through recirculation within the STCs may lead to a reduced capacity for further Cant uptake via gas exchange into the surface ocean, potentially contributing to a positive carbon-climate feedback. ©2015. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77919
Appears in Collections: 气候变化事实与影响
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作者单位: Oceanography and Geochemistry Research Department, Meteorological Research Institute, Tsukuba, Japan; Atmospheric and Oceanic Sciences, Princeton University, Princeton, NJ, United States
Recommended Citation:
Nakano H,, Ishii M,, Rodgers K,et al. Anthropogenic CO2 uptake, transport, storage, and dynamical controls in the ocean imposed by the meridional overturning circulation: A modeling study[J]. Global Biogeochemical Cycles,2015-01-01,29(10)