Decadal ocean observations in the Northwestern Mediterranean: insights from the MOOSE-GE cruises

Coppola, Laurent; Bosse, Anthony; Wagener, Thibaut; Lefevre, Dominique; Lescot, Magali; Carlotti, François; Lombard, Fabien; Guidi, Lionel; Not, Fabrice; Durrieu de Madron, Xavier; Conan, Pascal; Pujo-Pay, Mireille; Ulses, Caroline; Somot, Samuel; Estournel, Claude; Diamond Riquier, Emilie; Laus, Céline; Leblond, Nathalie; Labaste, Matthieu; Bretel, Patrice; Golbol, Melek; Kunesch, Stephane; Sola, Jennifer; Chirurgien, Laure; Nunige, Sandra; Romac, Sarah; Testor, Pierre

doi:10.5194/essd-18-5303-2026

Articles | Volume 18, issue 7

https://doi.org/10.5194/essd-18-5303-2026

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

https://doi.org/10.5194/essd-18-5303-2026

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

Articles | Volume 18, issue 7

Data description article

|

22 Jul 2026

Data description article |

| 22 Jul 2026

Decadal ocean observations in the Northwestern Mediterranean: insights from the MOOSE-GE cruises

Laurent Coppola, Anthony Bosse, Thibaut Wagener, Dominique Lefevre, Magali Lescot, François Carlotti, Fabien Lombard, Lionel Guidi, Fabrice Not, Xavier Durrieu de Madron, Pascal Conan, Mireille Pujo-Pay, Caroline Ulses, Samuel Somot, Claude Estournel, Emilie Diamond Riquier, Céline Laus, Nathalie Leblond, Matthieu Labaste, Patrice Bretel, Melek Golbol, Stephane Kunesch, Jennifer Sola, Laure Chirurgien, Sandra Nunige, Sarah Romac, and Pierre Testor

Data sets

MOOSE_GE cruises Laurent Coppola et al. https://doi.org/10.18142/235

MOOSE-GE cruises: lowered and ship ADCP data Anthony Bosse et al. https://doi.org/10.17882/99825

LION observatory data Anthony Bosse et al. https://doi.org/10.17882/44411

BILLION observatory data Xavier Durrieu de Madron et al. https://doi.org/10.17882/45980

DYFAMED observatory data Laurent Coppola et al. https://doi.org/10.17882/43749

MOOSE_GE cruises: phytoplankton pigments Céline Dimier et al. https://doi.org/10.17882/99865

Short summary

The Mediterranean Ocean Observing System for the Environment program investigated the fast-changing northwestern Mediterranean through annual cruises from 2010 to 2024. Using consistent surface-to-seafloor measurements, checked against fixed and autonomous platforms, we find intermediate and deep waters warming and getting saltier, oxygen declining and dissolved carbon rising, indicating progressing acidification. These trends can reshape ecosystems and stress the need for sustained monitoring.