DOI: 10.1002/2015GL065779
论文题名: Gas hydrate dissociation prolongs acidification of the Anthropocene oceans
作者: Boudreau B.P. ; Luo Y. ; Meysman F.J.R. ; Middelburg J.J. ; Dickens G.R.
刊名: Geophysical Research Letters
ISSN: 0094-8450
EISSN: 1944-8181
出版年: 2015
卷: 42, 期: 21 起始页码: 9337
结束页码: 9344
语种: 英语
英文关键词: carbonate compensation
; carbonate saturation
; gas hydrates
; methane
; ocean acidification
; ocean pH
Scopus关键词: Acidification
; Calcium carbonate
; Carbon
; Carbon dioxide
; Carbonation
; Gas emissions
; Gases
; Hydration
; Long Term Evolution (LTE)
; Methane
; Oceanography
; Anthropogenic CO
; Anthropogenic warming
; Biogeochemical modeling
; Carbonate compensation depths
; Carbonate saturations
; Carbonate system
; Hydrate dissociation
; Ocean acidifications
; Gas hydrates
; acidification
; acidity
; Anthropocene
; anthropogenic effect
; biogeochemistry
; calcium carbonate
; carbon cycle
; carbon dioxide
; emission inventory
; gas hydrate
; methane
; neutralization
; oxidation
; pH
; saturation
; warming
英文摘要: Anthropogenic warming of the oceans can release methane (CH4) currently stored in sediments as gas hydrates. This CH4 will be oxidized to CO2, thus increasing the acidification of the oceans. We employ a biogeochemical model of the multimillennial carbon cycle to determine the evolution of the oceanic dissolved carbonate system over the next 13 kyr in response to CO2 from gas hydrates, combined with a reasonable scenario for long-term anthropogenic CO2 emissions. Hydrate-derived CO2 will appreciably delay the neutralization of ocean acidity and the return to preindustrial-like conditions. This finding is the same with CH4 release and oxidation in either the deep ocean or the atmosphere. A change in CaCO3 export, coupled to CH4 release, would intensify the transient rise of the carbonate compensation depth, without producing any changes to the long-term evolution of the carbonate system. Overall, gas hydrate destabilization implies a moderate additional perturbation to the carbonate system of the Anthropocene oceans. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84954517542&doi=10.1002%2f2015GL065779&partnerID=40&md5=7e3e405d1a29adcfdbc485774e62bc69
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8066
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Oceanography, Dalhousie University, Halifax, NS, Canada
Recommended Citation:
Boudreau B.P.,Luo Y.,Meysman F.J.R.,et al. Gas hydrate dissociation prolongs acidification of the Anthropocene oceans[J]. Geophysical Research Letters,2015-01-01,42(21).