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Volume 13, issue 15
Biogeosciences, 13, 4389–4410, 2016
https://doi.org/10.5194/bg-13-4389-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 13, 4389–4410, 2016
https://doi.org/10.5194/bg-13-4389-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 08 Aug 2016

Research article | 08 Aug 2016

Seasonal variability of the oxygen minimum zone off Peru in a high-resolution regional coupled model

Oscar Vergara et al.

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Cited articles

Ancapichún, S. and Garcés-Vargas, J.: Variability of the Southeast Pacific Subtropical Anticyclone and its impact on sea surface temperature off north-central Chile, Cienc. Mar., 41, 1–20, https://doi.org/10.7773/cm.v41i1.2338, 2015.
Arévalo-Martínez, D., Kock, L. A., Löscher, C. R., Schmitz, R. A., and Bange, R. A.: Massive nitrous oxide emissions from the tropical South Pacific Ocean, Nat. Geosci., 8, 530–533, https://doi.org/10.1038/NGEO2469, 2015.
Bettencourt, J. H., López, C., Hernández-García, E., Montes, I., Sudre, J., Dewitte, B., Paulmier A., and Garçon, V.: Boundaries of the Peruvian Oxygen Minimum Zone shaped by coherent mesoscale dynamics, Nat. Geosci., 8, 937–940,, https://doi.org/10.1038/ngeo2570, 2015.
Bianchi, D., Dunne, J. P., Sarmiento, J. L., and Galbraith, E. D.: Data-based estimates of suboxia, denitrification, and N2O production in the ocean and their sensitivities to dissolved O2, Global Biogeochem. Cy., 26, GB2009, https://doi.org/10.1029/2011GB004209, 2012.
Bianucci, L., Fennel, K., and Denman, K. L.: Role of sediment denitrification in water column oxygen dynamics: comparison of the North American East and West Coasts, Biogeosciences, 9, 2673–2682, https://doi.org/10.5194/bg-9-2673-2012, 2012.
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The Southeast Pacific hosts one of the most extensive oxygen minimum zone (OMZ), yet the dynamics behind it remain unveiled. We use a high-resolution coupled physical–biogeochemical model to document the seasonal cycle of dissolved oxygen within the OMZ in both the coastal zone and the offshore ocean. The OMZ seasonal variability is driven by the seasonal fluctuations of the dissolved oxygen eddy flux, with a peak in Austral winter (fall) at the northern (southern) boundary and near the coast.
The Southeast Pacific hosts one of the most extensive oxygen minimum zone (OMZ), yet the...
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