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Biogeosciences An interactive open-access journal of the European Geosciences Union
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Volume 14, issue 20
Biogeosciences, 14, 4601–4617, 2017
https://doi.org/10.5194/bg-14-4601-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 14, 4601–4617, 2017
https://doi.org/10.5194/bg-14-4601-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 19 Oct 2017

Research article | 19 Oct 2017

The OMZ and nutrient features as a signature of interannual and low-frequency variability in the Peruvian upwelling system

Michelle I. Graco et al.
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Short summary
The Peruvian coastal upwelling ecosystem is a natural laboratory to study climatic variability and climate change. We examined the variability in the OMZ in the last decades in connection with the equatorial Pacific strong 1997–1998 El Niño event and the influence of central Pacific El Niño events and enhanced equatorial Kelvin wave activity since 2000. The data reveal two contrasting regimes and a long-term trend corresponding to a deepening of the oxygen-deficient waters and warming.
The Peruvian coastal upwelling ecosystem is a natural laboratory to study climatic variability...
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