DOI: 10.1002/2015GB005359
Scopus记录号: 2-s2.0-84990855357
论文题名: Decadal variations and trends of the global ocean carbon sink
作者: Landschützer P ; , Gruber N ; , Bakker D ; C ; E
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2016
卷: 30, 期: 10 起始页码: 1396
结束页码: 1417
语种: 英语
英文关键词: carbon sink variability
; climate change
; global carbon budget
; global carbon cycle
; ocean biogeochemistry
Scopus关键词: anthropogenic effect
; atmospheric forcing
; biogeochemistry
; carbon budget
; carbon sink
; climate change
; decadal variation
; dissolved inorganic carbon
; extratropical environment
; global ocean
; interpolation
; reconstruction
; sea surface temperature
; trend analysis
英文摘要: We investigate the variations of the ocean CO2 sink during the past three decades using global surface ocean maps of the partial pressure of CO2 reconstructed from observations contained in the Surface Ocean CO2 Atlas Version 2. To create these maps, we used the neural network-based data interpolation method of Landschützer et al. (2014) but extended the work in time from 1998 to 2011 to the period from 1982 through 2011. Our results suggest strong decadal variations in the global ocean carbon sink around a long-term increase that corresponds roughly to that expected from the rise in atmospheric CO2. The sink is estimated to have weakened during the 1990s toward a minimum uptake of only −0.8 ± 0.5 Pg C yr−1 in 2000 and thereafter to have strengthened considerably to rates of more than −2.0 ± 0.5 Pg C yr−1. These decadal variations originate mostly from the extratropical oceans, while the tropical regions contribute primarily to interannual variations. Changes in sea surface temperature affecting the solubility of CO2 explain part of these variations, particularly at subtropical latitudes. But most of the higher-latitude changes are attributed to modifications in the surface concentration of dissolved inorganic carbon and alkalinity, induced by decadal variations in atmospheric forcing, with patterns that are reminiscent of those of the Northern and Southern Annular Modes. These decadal variations lead to a substantially smaller cumulative anthropogenic CO2 uptake of the ocean over the 1982 through 2011 period (reduction of 7.5 ± 5.5 Pg C) relative to that derived by the Global Carbon Budget. ©2016. 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/77809
Appears in Collections: 气候变化事实与影响
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作者单位: Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, Zürich, Switzerland; Max Planck Institute for Meteorology, Hamburg, Germany; Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich, United Kingdom
Recommended Citation:
Landschützer P,, Gruber N,, Bakker D,et al. Decadal variations and trends of the global ocean carbon sink[J]. Global Biogeochemical Cycles,2016-01-01,30(10)