Articles | Volume 17, issue 10
https://doi.org/10.5194/essd-17-5089-2025
https://doi.org/10.5194/essd-17-5089-2025
Data description paper
 | 
01 Oct 2025
Data description paper |  | 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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Cited articles

BEC: FTP, https://bec.icm.csic.es/data-access-ftp/ (last access: 15 August 2025), 2025. a
ESA: Open Science Catalog, https://opensciencedata.esa.int/products/sofresh-sea-surface-salinity/collection (last access: 15 August 2025), 2025. a
Abernathey, R. P., Cerovecki, I., Holland, P. R., Newsom, E., Mazloff, M., and Talley, L. D.: Water-mass transformation by sea ice in the upper branch of the Southern Ocean Overturning, Nature Geoscience, 9, 596–601, https://doi.org/10.1038/ngeo2749, 2016. a, b
Argo: Argo float data and metadata from Global Data Assembly Centre (Argo GDAC), Argo [data set], https://doi.org/10.17882/42182, 2025. a, b
Aulicino, G., Cotroneo, Y., Ansorge, I., and van den Berg, M.: Sea surface temperature and salinity collected aboard the S.A. AGULHAS II and S.A. AGULHAS in the South Atlantic Ocean and Southern Ocean from 2010-12-08 to 2017-02-02 (NCEI Accession 0170743), NCEI, https://doi.org/10.7289/v56m3545, 2018a. a
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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.
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