globalchange  > 气候变化与战略
DOI: 10.1029/2019GB006229
论文题名:
Processes Driving Global Interior Ocean pH Distribution
作者: Lauvset S.K.; Carter B.R.; Perez F.F.; Jiang L.-Q.; Feely R.A.; Velo A.; Olsen A.
刊名: Global Biogeochemical Cycles
ISSN: 0886-6236
EISSN: 1944-9224
出版年: 2020
卷: 34, 期:1
语种: 英语
英文关键词: alkalinity ; anthropogenic effect ; biological production ; calcium carbonate ; carbonate system ; global ocean ; ocean acidification ; organic matter ; remineralization
学科: anthropogenic ; CaCO3 ; global ocean ; pH ; remineralization
中文摘要: Ocean acidification evolves on the background of a natural ocean pH gradient that is the result of the interplay between ocean mixing, biological production and remineralization, calcium carbonate cycling, and temperature and pressure changes across the water column. While previous studies have analyzed these processes and their impacts on ocean carbonate chemistry, none have attempted to quantify their impacts on interior ocean pH globally. Here we evaluate how anthropogenic changes and natural processes collectively act on ocean pH, and how these processes set the vulnerability of regions to future changes in ocean acidification. We use the mapped data product from the Global Ocean Data Analysis Project version 2, a novel method to estimate preformed total alkalinity based on a combination of a total matrix intercomparison and locally interpolated regressions, and a comprehensive uncertainty analysis. We find that the largest contribution to the interior ocean pH gradient comes from organic matter remineralization, with CaCO3 cycling being the second most important process. The estimates of the impact of anthropogenic CO2 changes on pH reaffirm the large and well-understood anthropogenic impact on pH in the surface ocean, and put it in the context of the natural pH gradient in the interior ocean. We also show that in the depth layer 500–1,500 m natural processes enhance ocean acidification by on average 28 ± 15%, but with large regional gradients. © 2020. The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160072
Appears in Collections:气候变化与战略

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作者单位: NORCE Norwegian Research Centre, Centre for Climate Research, Bergen, Norway; Formerly at Geophysical Institute, University of Bergen, Bergen, Norway; Joint Institute for the Study of the Atmosphere and Ocean, University of Washington, Seattle, WA, United States; Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration, Seattle, WA, United States; Instituto de Investigaciones Marinas, CSIC, Vigo, Spain; Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States; National Centers for Environmental Information, National Oceanographic and Atmospheric Administration, Silver Spring, MD, United States; Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway

Recommended Citation:
Lauvset S.K.,Carter B.R.,Perez F.F.,et al. Processes Driving Global Interior Ocean pH Distribution[J]. Global Biogeochemical Cycles,2020-01-01,34(1)
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