DOI: 10.1002/2013GL058888
论文题名: Major role of the equatorial current system in setting oxygen levels in the eastern tropical Atlantic Ocean: A high-resolution model study
作者: Duteil O. ; Schwarzkopf F.U. ; Böning C.W. ; Oschlies A.
刊名: Geophysical Research Letters
ISSN: 0094-10255
EISSN: 1944-9986
出版年: 2014
卷: 41, 期: 6 起始页码: 2033
结束页码: 2040
语种: 英语
英文关键词: biogeochemical modeling
; equatorial current system
; high-resolution modeling
; oxygen minimum zone
; tropical Atlantic Ocean
Scopus关键词: Biogeochemistry
; Budget control
; Ocean habitats
; Sensitivity analysis
; Biogeochemical modeling
; equatorial current system
; High-resolution models
; Oxygen minimum zone
; Tropical atlantic
; Oxygen
; biogeochemistry
; concentration (composition)
; eddy
; oceanic current
; oxygen consumption
; oxygen minimum layer
; oxygenation
; resolution
; undercurrent
; Atlantic Ocean
; Atlantic Ocean (Tropical)
英文摘要: Understanding the causes of the observed expansion of tropical ocean's oxygen minimum zones (OMZs) is hampered by large biases in the representation of oxygen distribution in climate models, pointing to incorrectly represented mechanisms. Here we assess the oxygen budget in a global biogeochemical circulation model, focusing on the Atlantic Ocean. While a coarse (0.5°) configuration displays the common bias of too large and too intense OMZs, the oxygen concentration in an eddying (0.1°) configuration is higher and closer to observations. This improvement is traced to a stronger oxygen supply by a more realistic representation of the equatorial and off-equatorial undercurrents, outweighing the concurrent increase in oxygen consumption associated with the stronger nutrient supply. The sensitivity of the eastern tropical Atlantic oxygen budget to the equatorial current intensity suggests that temporal changes in the eastward oxygen transport from the well-oxygenated western boundary region might partly explain variations in the OMZs. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896059052&doi=10.1002%2f2013GL058888&partnerID=40&md5=b2f9c86a24bd271a3a433f551a94147d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7519
Appears in Collections: 气候减缓与适应
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作者单位: GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Recommended Citation:
Duteil O.,Schwarzkopf F.U.,Böning C.W.,et al. Major role of the equatorial current system in setting oxygen levels in the eastern tropical Atlantic Ocean: A high-resolution model study[J]. Geophysical Research Letters,2014-01-01,41(6).