Articles | Volume 19, issue 3
https://doi.org/10.5194/os-19-923-2023
https://doi.org/10.5194/os-19-923-2023
Research article
 | 
28 Jun 2023
Research article |  | 28 Jun 2023

Factors influencing the meridional width of the equatorial deep jets

Swantje Bastin, Martin Claus, Richard J. Greatbatch, and Peter Brandt

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Cited articles

Ascani, F., Firing, E., McCreary, J. P., Brandt, P., and Greatbatch, R. J.: The Deep Equatorial Ocean Circulation in Wind-Forced Numerical Solutions, J. Phys. Ocean., 45, 1709–1734, https://doi.org/10.1175/JPO-D-14-0171.1, 2015. a, b, c, d, e, f, g, h
Bastin, S., Claus, M., Brandt, P., and Greatbatch, R. J.: Equatorial Deep Jets and Their Influence on the Mean Equatorial Circulation in an Idealized Ocean Model Forced by Intraseasonal Momentum Flux Convergence, Geophys. Res. Lett., 47, e2020GL087808, https://doi.org/10.1029/2020gl087808, 2020. a, b, c, d, e, f, g, h, i, j, k
Bastin, S., Claus, M., Brandt, P., and Greatbatch, R. J.: Atlantic Equatorial Deep Jets in Argo Float Data, J. Phys. Ocean., 52, 1315–1332, https://doi.org/10.1175/JPO-D-21-0140.1, 2022. a, b, c, d, e, f
Bastin, S., Claus, M., Greatbatch, R. J., and Brandt, P.: Supplementary dataset and scripts to Bastin et al.: Factors influencing the meridional width of the equatorial deep jets (Ocean Science) (2.0), Zenodo [data set], https://doi.org/10.5281/zenodo.7940306, 2023. a
Bourlès, B., Andrié, C., Gouriou, Y., Eldin, G., du Penhoat, Y., Freudenthal, S., Dewitte, B., Gallois, F., Chuchla, R., Baurand, F., Aman, A., and Kouadio, G.: The deep currents in the Eastern Equatorial Atlantic Ocean, Geophys. Res. Lett., 30, 8002, https://doi.org/10.1029/2002gl015095, 2003. a
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Short summary
Equatorial deep jets are ocean currents that flow along the Equator in the deep oceans. They are relevant for oxygen transport and tropical surface climate, but their dynamics are not yet entirely understood. We investigate different factors leading to the jets being broader than theory predicts. Mainly using an ocean model, but corroborating the results with shipboard observations, we show that loss of momentum is the main factor for the broadening but that meandering also contributes.