PERLE4

Type Oceanographic cruise
Ship L'Atalante
Ship owner Ifremer
Dates 27/03/2021 - 26/04/2021
Chief scientist(s) PUJO-PAY Mireille , DURRIEU De Xavier , CONAN Pascal ORCID

LABORATOIRE D'OCÉANOGRAPHIE MICROBIENNE - UMR 7621

1 avenue Pierre Favre

66650 Banyuls-sur-mer

33 (0)4 68 88 73 01

https://lomic.obs-banyuls.fr/#fr/index.html
DOI 10.17600/18001980
Objective

The Programme PERLE (Pelagic Ecosystem Response in the Levant Experiment) from the MISTRALS/ MERMEX programme implementation plan, aims to describe the formation and dispersion of Levantine Intermediate Water (LIW), and determine its role in structuring the planktonic ecosystem in the eastern Mediterranean. Indeed, these LIW, formed in the eastern basin, represent the only water mass common to the whole Mediterranean and play a key role for the general circulation, the redistribution of nutrients and the dynamics and planktonic communities. However, environmental changes due to climate changes seem to impact these LIW waters (circulation, structure...). In the near future, this could have important environmental consequences such as changes in the circulation of Mediterranean Sea. The objective of the programme is therefore to assess the changes that are taking place in order to predict future environmental evolutions.

Four oceanographic cruises study the key periods of the annual cycle from both a physical and biogeochemical caracteristics. The PERLE-4 cruise focuses on the dispersion of Intermediate Levantine Waters and the evolution of their physical and biogeochemical characteristics, between the formation zone (Levantine basin) and the North-Western basin. It corresponds to the postponement of the PERLE 3 cruise which had been scheduled in March 2020 and which was interrupted at the beginning of the mission for sanitary reasons Covid-19.

A network of stations covering the study area will be set up during the cruise to describe the physical, optical, biogeochemical and biological parameters of the water column (surface-bottom). These observations will be supplemented by physical and biogeochemical parameters collected by autonomous platforms (mooring line; profiling floats; gliders). Satellite data will also be used to monitor the evolution of the temperature and chlorophyll concentration of the surface waters over the entire area under study, as well as to identify the main (sub)mesoscale structures.

The observations will also allow the calibration of float-profiler / glider data to assess nutrients and the composition of the main phytoplankton groups in areas not prospected by the ship. This information will make it possible to improve the representation of the evolution of the characteristics of the LIWs along their path between the eastern and western basins.

The results of this cruise will also make it possible to complete the existing databases, to test and improve modelling on a regional (Levantine basin) and global (Mediterranean) scale, by combining them with the results of the countdown campaigns (MOOSE-GE in the north-western Mediterranean; DEKOSIM in the Levantine basin...).

Published data

Metzl Nicolas, Fin Jonathan, Lo Monaco Claire, Mignon Claude, Alliouane Samir, Bombled Bruno, Boutin Jacqueline, Bozec Yann, Comeau Steeve, Conan Pascal, Coppola Laurent, Cuet Pascale, Ferreira Eva, Gattuso Jean-Pierre, Gazeau Frédéric, Goyet Catherine, Grossteffan Emilie, Lansard Bruno, Lefèvre Dominique, Lefèvre Nathalie, Leseurre Coraline, Lombard Fabien, Petton Sébastien, Pujo-Pay Mireille, Rabouille Christophe, Reverdin Gilles, Ridame Céline, Rimmelin-Maury Peggy, Ternon Jean-François, Touratier Franck, Tribollet Aline, Wagener Thibaut, Wimart-Rousseau Cathy (2024). An updated synthesis of ocean total alkalinity and dissolved inorganic carbon measurements from 1993 to 2023: the SNAPO-CO2-v2 dataset. https://doi.org/10.17882/102337


Metzl Nicolas, Fin Jonathan, Lo Monaco Claire, Mignon Claude, Alliouane Samir, Antoine David, Bourdin Guillaume, Boutin Jacqueline, Bozec Yann, Conan Pascal, Coppola Laurent, Douville Eric, Durrieu De Madron Xavier, Gattuso Jean-Pierre, Gazeau Frédéric, Golbol  Melek, Lansard Bruno, Lefèvre Dominique, Lefèvre Nathalie, Lombard Fabien, Louanchi Férial, Merlivat Liliane, Olivier Léa, Petrenko Anne, Petton Sébastien, Pujo-Pay Mireille, Rabouille Christophe, Reverdin Gilles, Ridame Céline, Tribollet Aline, Vellucci Vincenzo, Wagener Thibaut, Wimart-Rousseau Cathy (2023). A synthesis of ocean total alkalinity and dissolved inorganic carbon measurements from 1993 to 2022: the SNAPO-CO2-v1 dataset. https://doi.org/10.17882/95414


Data managed by SISMER

Bibliography

Publications

Metzl Nicolas, Fin Jonathan, Lo Monaco Claire, Mignon Claude, Alliouane Samir, Antoine David, Bourdin Guillaume, Boutin Jacqueline, Bozec Yann, Conan Pascal, Coppola Laurent, Diaz Frédéric, Douville Eric, Durrieu De Madron Xavier, Gattuso Jean-Pierre, Gazeau Frédéric, Golbol Melek, Lansard Bruno, Lefèvre Dominique, Lefèvre Nathalie, Lombard Fabien, Louanchi Férial, Merlivat Liliane, Olivier Léa, Petrenko Anne, Petton SébastienORCID, Pujo-Pay Mireille, Rabouille Christophe, Reverdin Gilles, Ridame Céline, Tribollet Aline, Vellucci Vincenzo, Wagener Thibaut, Wimart-Rousseau Cathy (2024). A synthesis of ocean total alkalinity and dissolved inorganic carbon measurements from 1993 to 2022: the SNAPO-CO2-v1 dataset. Earth System Science Data, 16(1), 89-120. Publisher's official version : https://doi.org/10.5194/essd-16-89-2024 , Open Access version : https://archimer.ifremer.fr/doc/00859/97094/


Barboni Alexandre, Coadou-Chaventon Solange, Stegner Alexandre, Le Vu Briac, Dumas Franck (2023). How subsurface and double-core anticyclones intensify the winter mixed-layer deepening in the Mediterranean Sea. Ocean Science, 19(2), 229-250. Publisher's official version : https://doi.org/10.5194/os-19-229-2023 , Open Access version : https://archimer.ifremer.fr/doc/00787/89858/


D'Ortenzio F., Taillandier V., Claustre H., Coppola L., Conan P., Dumas Franck, Durrieu Du Madron X., Fourrier M., Gogou A., Karageorgis A., Lefevre Dominique, Leymarie E., Oviedo A., Pavlidou A., Poteau A., Poulain P.M., Prieur L, Psarra S., Puyo‐pay M., Ribera D'Alcalà M., Schmechtig C., Terrats L., Velaoras D., Wagener T., Wimart‐rousseau C. (2021). BGC‐Argo floats observe nitrate injection and spring phytoplankton increase in the surface layer of Levantine Sea (Eastern Mediterranean). Geophysical Research Letters, 48(8), e2020GL091649 (11p.). Publisher's official version : https://doi.org/10.1029/2020GL091649 , Open Access version : https://archimer.ifremer.fr/doc/00685/79744/


References of Technical Reports

Doussin Jean-François, de Garidel-Thoron Thibault, (coord.) (2023). Prospective océan-atmosphère 2023-2028. Synthèse des ateliers du colloque de synthèse de prospective du domaine océan-atmosphère (oa) des 10-13 janvier 2023 à Autrans et des groupes de travail préparatoires.


Thesis using campaign data

Panetier Aurélie (2023). Shipborne Global Navigation Satellite Systems for Offshore Atmospheric Water Vapor Monitoring. PhD Thesis, ENSTA Bretagne.


Wimart-Rousseau Cathy (2021). Dynamiques saisonnière et pluriannuelle du système des carbonates dans les eaux de surface en mer Méditerranée / Seasonal and multiannual dynamics of the carbonate system in the surface waters of the Mediterranean Sea. PhD Thesis, Université Aix-Marseille. https://archimer.ifremer.fr/doc/00747/85889/