DOI: 10.1002/2013GL057981
论文题名: Assessing the potential of calcium-based artificial ocean alkalinization to mitigate rising atmospheric CO2 and ocean acidification
作者: Ilyina T. ; Wolf-Gladrow D. ; Munhoven G. ; Heinze C.
刊名: Geophysical Research Letters
ISSN: 0094-8362
EISSN: 1944-8093
出版年: 2013
卷: 40, 期: 22 起始页码: 5909
结束页码: 5914
语种: 英语
英文关键词: artificial ocean alkalinization
; mitigation potential
; modeling
; ocean biogeochemistry
Scopus关键词: Anthropogenic CO
; artificial ocean alkalinization
; mitigation potential
; Ocean acidifications
; Ocean biogeochemistry
; Pre-industrial levels
; Saturation state
; Upwelling systems
; Acidification
; Alkalinity
; Biogeochemistry
; Calcium
; Models
; Oceanography
; pH
; Carbon dioxide
; air-sea interaction
; alkalinity
; alkalinization
; biogeochemistry
; calcium
; carbon dioxide
; carbonate
; human activity
; pH
; saturation
; upwelling
英文摘要: Enhancement of ocean alkalinity using calcium compounds, e.g., lime has been proposed to mitigate further increase of atmospheric CO2 and ocean acidification due to anthropogenic CO2 emissions. Using a global model, we show that such alkalinization has the potential to preserve pH and the saturation state of carbonate minerals at close to today's values. Effects of alkalinization persist after termination: Atmospheric CO2 and pH do not return to unmitigated levels. Only scenarios in which large amounts of alkalinity (i.e., in a ratio of 2:1 with respect to emitted CO 2) are added over large ocean areas can boost oceanic CO2 uptake sufficiently to avoid further ocean acidification on the global scale, thereby elevating some key biogeochemical parameters, e.g., pH significantly above preindustrial levels. Smaller-scale alkalinization could counteract ocean acidification on a subregional or even local scale, e.g., in upwelling systems. The decrease of atmospheric CO2 would then be a small side effect. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887704011&doi=10.1002%2f2013GL057981&partnerID=40&md5=af69d289267b6cc09c7cd11d469df7bc
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5626
Appears in Collections: 气候减缓与适应
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作者单位: Max Planck Institute for Meteorology, Bundesstraße 53, DE-20146 Hamburg, Germany
Recommended Citation:
Ilyina T.,Wolf-Gladrow D.,Munhoven G.,et al. Assessing the potential of calcium-based artificial ocean alkalinization to mitigate rising atmospheric CO2 and ocean acidification[J]. Geophysical Research Letters,2013-01-01,40(22).