气候变化领域集成服务门户(CCPortal): Processes Driving Global Interior Ocean pH Distribution

CCPortal

DOI	10.1029/2019GB006229
	Processes Driving Global Interior Ocean pH Distribution
	Lauvset S.K.; Carter B.R.; Perez F.F.; Jiang L.-Q.; Feely R.A.; Velo A.; Olsen A.
发表日期	2020
ISSN	0886-6236
EISSN	1944-9224
卷号	34 期号:1
英文摘要	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.
英文关键词	anthropogenic; CaCO3; global ocean; pH; remineralization
语种	英语
scopus关键词	alkalinity; anthropogenic effect; biological production; calcium carbonate; carbonate system; global ocean; ocean acidification; organic matter; remineralization
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129677
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
推荐引用方式 GB/T 7714	Lauvset S.K.,Carter B.R.,Perez F.F.,et al. Processes Driving Global Interior Ocean pH Distribution[J],2020,34(1).
APA	Lauvset S.K..,Carter B.R..,Perez F.F..,Jiang L.-Q..,Feely R.A..,...&Olsen A..(2020).Processes Driving Global Interior Ocean pH Distribution.Global Biogeochemical Cycles,34(1).
MLA	Lauvset S.K.,et al."Processes Driving Global Interior Ocean pH Distribution".Global Biogeochemical Cycles 34.1(2020).