DOI: 10.1002/2014GL062971
论文题名: Ocean acidification along the 24.5°N section in the subtropical North Atlantic
作者: Guallart E.F. ; Fajar N.M. ; Padín X.A. ; Vázquez-Rodríguez M. ; Calvo E. ; Ríos A.F. ; Hernández-Guerra A. ; Pelejero C. ; Pérez F.F.
刊名: Geophysical Research Letters
ISSN: 0094-9065
EISSN: 1944-8796
出版年: 2015
卷: 42, 期: 2 起始页码: 450
结束页码: 458
语种: 英语
英文关键词: decadal variability
; pH variability
; seawater pH
Scopus关键词: Acidification
; Carbon dioxide
; Dissolved oxygen
; Oxygen
; Anthropogenic forcing
; Decadal variability
; Deep western boundary currents
; Human activities
; Natural variability
; Ocean acidifications
; Permanent thermoclines
; Vertical distributions
; Oceanography
; acidification
; carbon dioxide
; deconvolution
; environmental assessment
; human activity
; marine pollution
; subtropical region
; thermocline
; vertical distribution
; water chemistry
; water column
; western boundary current
; Atlantic Ocean
; Atlantic Ocean (North)
英文摘要: Ocean acidification is directly related to increasing atmospheric CO2 levels due to human activities and the active role of the global ocean in absorbing part of this anthropogenic CO2. Here we present an assessment of the pH changes that have occurred along 24.5°N in the subtropical North Atlantic through comparison of pH observations conducted in 1992 and 2011. It reveals an overall decline in pH values in the first 1000 dbar of the water column. The deconvolution of the temporal pH differences into anthropogenic and nonanthropogenic components reveals that natural variability, mostly owed to a decrease in oxygen levels in particular regions of the section, explains the vertical distribution of the larger pH decreases (up to -0.05 pH units), which are found within the permanent thermocline. The detection of long-term trends in dissolved oxygen in the studied region gains importance for future pH projections, as these changes modulate the anthropogenically derived acidification. The anthropogenic forcing explains significant acidification deeper than 1000 dbar in the western basin, within the Deep Western Boundary Current. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923536909&doi=10.1002%2f2014GL062971&partnerID=40&md5=5f8fca3c10f7dea6054ff30e4d872386
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8681
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: Institut de Ciències Del Mar, Consejo Superior de Investigaciones Científicas, Barcelona, Spain
Recommended Citation:
Guallart E.F.,Fajar N.M.,Padín X.A.,et al. Ocean acidification along the 24.5°N section in the subtropical North Atlantic[J]. Geophysical Research Letters,2015-01-01,42(2).