Satellite-based regional Sea Surface Salinity  maps for enhanced understanding of  freshwater fluxes in the Southern Ocean

González-Gambau, Verónica; Olmedo, Estrella; García-Espriu, Aina; González-Haro, Cristina; Turiel, Antonio; Gabarró, Carolina; Silvano, Alessandro; Narayanan, Aditya; Naveira-Garabato, Alberto; Catany, Rafael; Hoareau, Nina; Umbert, Marta; Aulicino, Giuseppe; Cotroneo, Yuri; Sabia, Roberto; Fernández-Prieto, Diego

doi:10.5194/essd-17-5089-2025

Articles | Volume 17, issue 10

https://doi.org/10.5194/essd-17-5089-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/essd-17-5089-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 10

Data description article

|

01 Oct 2025

Data description article |

| 01 Oct 2025

Satellite-based regional Sea Surface Salinity maps for enhanced understanding of freshwater fluxes in the Southern Ocean

Verónica González-Gambau, Estrella Olmedo, Aina García-Espriu, Cristina González-Haro, Antonio Turiel, Carolina Gabarró, Alessandro Silvano, Aditya Narayanan, Alberto Naveira-Garabato, Rafael Catany, Nina Hoareau, Marta Umbert, Giuseppe Aulicino, Yuri Cotroneo, Roberto Sabia, and Diego Fernández-Prieto

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Cumulative views and downloads (calculated since 30 Apr 2025)

Month	HTML	PDF	XML	Total
Apr 2025	11	1	0	12
May 2025	224	26	7	257
Jun 2025	63	21	9	93
Jul 2025	60	14	5	79
Aug 2025	225	9	1	235
Sep 2025	865	4	3	872
Oct 2025	253	61	13	327
Nov 2025	213	59	10	282
Dec 2025	221	91	10	322
Jan 2026	439	94	17	550
Feb 2026	257	79	15	351
Mar 2026	141	148	11	300
Apr 2026	163	138	10	311
May 2026	52	25	5	82

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Short summary

This paper introduces a new Sea Surface Salinity product for the Southern Ocean, based on SMOS data and developed by the Barcelona Expert Center. It offers 9 d maps on a 25 km EASE-SL grid, from 2011 to 2023, covering areas south of 30° S. The product is accurate beyond 150 km from sea ice, with nearly zero bias and a ~0.22 STD. It tracks well seasonal and interannual changes and will contribute to the understanding of processes influenced by upper-ocean salinity, including ice formation/melt.