Controls of the latitudinal migration of the Brazil-Malvinas confluence described in MOM6-SWA14

Laureanti, Nicole Cristine; Curchitser, Enrique; Hedstrom, Katherine; Adcroft, Alistair; Hallberg, Robert; Harrison, Matthew J.; Dussin, Raphael; Chou, Sin Chan; Nobre, Paulo; Giarolla, Emanuel; Camayo, Rosio

doi:10.5194/gmd-19-3109-2026

Articles | Volume 19, issue 8

https://doi.org/10.5194/gmd-19-3109-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Development and deployment of regional ocean configurations...

https://doi.org/10.5194/gmd-19-3109-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 8

Methods for assessment of models

|

22 Apr 2026

Methods for assessment of models |

| 22 Apr 2026

Controls of the latitudinal migration of the Brazil-Malvinas confluence described in MOM6-SWA14

Nicole Cristine Laureanti, Enrique Curchitser, Katherine Hedstrom, Alistair Adcroft, Robert Hallberg, Matthew J. Harrison, Raphael Dussin, Sin Chan Chou, Paulo Nobre, Emanuel Giarolla, and Rosio Camayo

Data sets

Mixed layer depth over the global ocean: An examination of profile data and a profile-based climatology (https://mld.ifremer.fr/Surface_Mixed_Layer_Depth.php) C. de Boyer Montégut et al. https://doi.org/10.1029/2004JC002378

An Introduction to the Near-Real-Time QuikSCAT Data (https://podaac.jpl.nasa.gov/QuikSCAT?tab=-mission-objectives&sections=about%2Bdata) R. N. Hoffman and S. M. Leidner https://doi.org/10.1175/WAF841.1

World Ocean Atlas 2023. Salinity and Temperature J. R. Reagan et al. https://doi.org/10.25921/va26-hv25

River discharge and related historical data from the Global Flood Awareness System. v3.1 E. Zsoter et al. https://doi.org/10.24381/cds.a4fdd6b9

ERA5 hourly data on single levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.adbb2d47

Model code and software

MOM6 Ocean Model N. C. Laureanti et al. https://doi.org/10.5281/zenodo.17252994

"Controls of the Latitudinal Migration of the Brazil-Malvinas Confluence described on MOM6-SWA14" model set-up scripts and files N. C. Laureanti et al. https://doi.org/10.5281/zenodo.17252554

"Controls of the Latitudinal Migration of the Brazil-Malvinas Confluence described on MOM6-SWA14" figures scripts and files N. C. Laureanti et al. https://doi.org/10.5281/zenodo.18498115

Short summary

This study investigates the variability of currents in the Southwestern Atlantic Ocean using a high-resolution simulation. Particularly in the Brazil-Malvinas Confluence (BMC), it finds that the southward movement of the BMC, induced by the warming trends in the region, is balanced by northward flow from the Malvinas Current and Pacific Waves. The analysis also examines the intense northward displacement of the North Brazil Current, where inconsistencies in the simulation affect its evolution.