Major role of the equatorial current system in setting oxygen levels in the eastern tropical Atlantic Ocean: A high‐resolution model study
Major role of the equatorial current system in setting oxygen levels in the eastern tropical Atlantic Ocean: A high‐resolution model study
复制标题
赤道洋流系统在设定东热带大西洋含氧量方面的主要作用:高分辨率模型研究
DOI:
10.1002/2013gl058888
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发表时间:
2014
影响因子:
5.2
通讯作者:
Oschlies
中科院分区:
文献类型:
--
作者:
Duteil;Schwarzkopf;Böning;Oschlies
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.
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影响因子:
4.9
作者:
A. Gnanadesikan;J. Dunne;J. John
通讯作者:
J. John
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
I. Kriest;A. Oschlies;S. Khatiwala
通讯作者:
S. Khatiwala
影响因子:
5.2
作者:
Duteil, O.;Oschlies, A.
通讯作者:
Oschlies, A.
影响因子:
4.4
作者:
Debreu, Laurent;Vouland, Christophe;Blayo, Eric
通讯作者:
Blayo, Eric
影响因子:
3.5
作者:
J. Jouanno;F. Marin;Y. Penhoat;J. Molines;J. Sheinbaum
通讯作者:
J. Sheinbaum