Articles | Volume 19, issue 6
https://doi.org/10.5194/os-19-1705-2023
https://doi.org/10.5194/os-19-1705-2023
Research article
 | 
05 Dec 2023
Research article |  | 05 Dec 2023

Equatorial wave diagnosis for the Atlantic Niño in 2019 with an ocean reanalysis

Qingyang Song and Hidenori Aiki

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Cited articles

Aiki, H., Greatbatch, R. J., and Claus, M.: Towards a seamlessly diagnosable expression for the energy flux associated with both equatorial and mid-latitude waves, Prog. Earth Planet. Sc., 4, 11, https://doi.org/10.1186/s40645-017-0121-1, 2017. a, b, c
Bachèlery, M.-L., Illig, S., and Rouault, M.: Interannual coastal trapped waves in the Angola-Benguela upwelling system and Benguela Niño and Niña events, J. Marine Syst., 203, 103262, https://doi.org/10.1016/j.jmarsys.2019.103262, 2020. a, b
Brandt, P., Funk, A., Hormann, V., Dengler, M., Greatbatch, R. J., and Toole, J. M.: Interannual atmospheric variability forced by the deep equatorial Atlantic Ocean, Nature, 473, 497, https://doi.org/10.1038/nature10013, 2011. a
Brandt, P., Claus, M., Greatbatch, R. J., Kopte, R., Toole, J. M., Johns, W. E., and Böning, C. W.: Annual and semiannual cycle of equatorial Atlantic circulation associated with basin-mode resonance, J. Phys. Oceanogr., 46, 3011–3029, 2016. a
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Short summary
There has been a long-standing need for a rapid-detection method for waves using simulation data for Atlantic Niño events. This study addresses this by utilizing an ocean reanalysis and an energy flux scheme during the 2019 Niño event. The results confirm the significant influence of subseasonal Kelvin waves on the event and also suggest that wave energy from off-equatorial regions likely preconditioned the event. This study is thus a useful tool for warning systems for Atlantic Niño events.