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Intensification of Atlantic and Pacific Large-Scale Upwelling under Recent Climate Conditions

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Abstract

Using satellite data on the sea surface temperature since 1985 (with a resolution of 0.25° × 0.25°) and the sea surface wind since 1992 (on a grid of 0.25° × 0.25°), the parameters of the low-frequency variability of the fields characterizing the intensity of the Canary, Benguela, Californian, Peruvian and Chilean upwellings have been analyzed. It is shown that the large-scale wind-driven upwellings listed above are intensifying. The contributions of the offshore wind and varying vertical velocities caused by space inhomogeneity of the wind field into this intensification are assessed for each upwelling.

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ACKNOWLEDGMENTS

The authors are grateful to the anonymous reviewer for helpful comments.

Funding

This work was carried out within the framework of a state assignment, project no. 0012–2019–0002 (Fundamental Study of Processes in the Climate System That Determine the Spatial and Temporal Variability of the Natural Environment of Global and Regional Scales).

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Authors and Affiliations

  1. Institute of Natural and Technical Systems, 299011, Sevastopol, Russia

    A. B. Polonsky & A. N. Serebrennikov

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  1. A. B. Polonsky
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  2. A. N. Serebrennikov
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Correspondence to A. B. Polonsky.

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Translated by M. Hannibal

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Polonsky, A.B., Serebrennikov, A.N. Intensification of Atlantic and Pacific Large-Scale Upwelling under Recent Climate Conditions. Dokl. Earth Sc. 492, 480–484 (2020). https://doi.org/10.1134/S1028334X20060161

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  • DOI: https://doi.org/10.1134/S1028334X20060161

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