All signatories
Jean JOUZEL, Palaeoclimatologist, former vice-chair of the IPCC, member of the French Academy of Sciences.
Wolfgang CRAMER, lead author of IPCC Working Group 2, CNRS research director, ecologist
Magali REGHEZZA, member of the French High Council on Climate, geographer, member of the Centre de Formation sur l’Environnement et la Société de l’ENS (Centre for Environmental and Social Studies)
Jean-Baptiste SALLEE, IPCC Author, CNRS Research Director, oceanographer
Christophe CASSOU, co-author of the 6th IPCC report, CNRS research director, climatologist
Yamina SAHEB, lead author of IPCC group 3, PhD in energy, expert in climate change mitigation policies
Agnès DUCHARNE, hydroclimatologist, CNRS research director
Jean-Louis DUFRESNE, co-author of the 5th and 6th IPCC reports, CNRS research director, climatologist
Michael GHIL, climatologist, physicist and mathematician, professor Emeritus at the Ecole Normale Supérieure, Member of the Academia Europaea, Alfred Wegener Medalist of the European Geosciences Union
Heidi SEVESTRE, glaciologist, member of the Arctic Monitoring and Assessment Programme, working group of the Arctic Council
Xavier CAPET, CNRS Research Director, oceanographer
Elodie VERCKEN, Director of Research in Ecology, INRAE
Juliette MIGNOT, IRD Research Director, climatologist
Benjamin SULTAN, IRD Research Director, climatologist
François COLAS, IRD Research Director, oceanographer
Jérôme VIALARD, IRD Research Director, Oceanographer and Climatologist
Sébastien LEBONNOIS, CNRS Research Director, planetologist
Etienne BERTHIER, Glaciologist at the CNRS, Midi Pyrénées Observatory
Stéphanie BONIFACE, Carbon Footprint Project Manager, Institut Pierre Simon Laplace, CNRS
Rémi LAXENAIRE, CNES post-doctoral researcher at the University of La Réunion, oceanographer
Niels DUTRIEVOZ, PhD student at the Laboratory of Climate and Environmental Sciences (LSCE)
Philippe NAVEAU, PhD student, CNRS, LSCE
Lionel GOURDEAU, IRD Research Director, oceanographer
Catherine AUBERTIN, Research Director, IRD, environmental economist
David LABAT, University Professor, hydrogeologist, Toulouse 3 University
Xavier MARI, IRD Research Director, oceanographer
Sébastien BAROT, IRD Research Director, ecologist
Serge JANICOT, Research Director, IRD
Sara Labrousse LOCEAN, CNRS Research Fellow, ecologist
Philippe SOLANO, IRD, Director of UMR Intertryp IRD-Cirad
Dr Sarah DUMONT, oncologist
Yann COHEN, Postdoctoral researcher in atmospheric chemistry (LSCE)
Marie-Paule BONNET, IRD Research Director, UMR Espace-Dev
Renaud PERSON, IRD research engineer, oceanographer
Pascal MAUGIS, researcher at LSCE
Dr Frédéric C. DO, PhD, HDR, Plant Water Ecophysiology, Ecohydrology, Agroecology, Agroforestry
Lucile GUERIN, Climate Project Officer at IRD.
Robin ROLLAND, PhD student in oceanography.
Valentin MARON, researcher in climate didactic physics
Christophe LOUP, Assistant Chemical Engineer, CNRS.
Sophie GODIN-BEEKMANN, Director of Research in Atmospheric Physics, CNRS
Céline GUILLOIT, Research Officer
Maxime REJOU-MECHAIN, Ecologist at the Institut de Recherche pour le Développement, Research Officer.
Raphael LEBLOIS, INRAE Montpellier researcher
Olga OTERO, University Professor, Evolution & Palaeontology
Lise DESVALLEES, Senior Lecturer and researcher at the University of Pau and the Pays de l’Adour Post-doctoral researcher at the PASSAGES Laboratory
Jacques LE BOURLOT, Professor Emeritus (Physics/Astrophysics) at Université Paris-Cité and Observatoire de Paris
Albane BARBERO, Research Engineer – Institute of Environmental Geosciences of the Environment
Rémi VALOIS, MdC Senior Lecturer and Researcher, Hydrogeology and Geophysics, EMMAH Laboratory – Univ. Avignon
Laurent DRAPEAU, Applied Mathematics Research Engineer, IRD
Nicolas DELPIERRE, Professor of Forest Ecology, Université Paris-Saclay
Sylvain GLÉMIN, CNRS Research Director
Claire CHATELAIN, CNRS Research Fellow, Centre R. Mousnier Centre/Sorbonne University
Jean-Luc GOUZE, DR Inria, Sophia-Antipolis
Éric LOMBAERT, INRAE Research Engineer
Patrick GANSTER, Senior Lecturer and Researcher, ITM
Jim GRISILLON, PhD student in atmospheric chemistry at the LCE (Laboratoire deChimie de l’Environnement) at the University of Aix-Marseille.
Guillaume BLANC, Senior Lecturer in physics, Université Paris Cité
Olivier FREROT, Chief Engineer, Ponts et Chaussées, Lecturer and essayist
Arthur LEBLOIS, CNRS Research Director
Constance VALENTIN, Research fellow, Physicist
Alain FUMENIA, Post-doctoral researcher at the Oceanology and Geoscience Laboratory
Gilles ARNOLD, Senior Lecturer at the University of Haute Alsace
Jean-Christophe POGGIALE, Professor, Université de la Méditerranée, member of the Microbiology, Geochemistry and Marine Ecology Laboratory at the Marseille Oceanology Centre.
Simon BENHAMOU, CNRS Research Director
Thierry MENAND, Senior Lecturer at the University of Clermont Auvergne, Doctor of Internal Geophysics
Sara LABROUSSE, postdoctoral researcher, specialist in marine ecology, CNRS
Cécile APPERT, Research Director, CNRS
Audrey TAILLEFER, Post-doctoral researcher in Geosciences
Laurent PAGANI, Astrophysicist, CNRS Research Director
Tanguy FARDET, Research Fellow, OCAPI Programme, LEESU, ENPC
Simon BOITARD , Research Fellow, INRAE
Nicolas GRANER, Head of scientific mediation, Université Paris-Saclay
Daniel EPRON, Professor, Kyoto University, Université de Lorraine, Faculty of Agriculture
Patrick DUNCAN, Former Research Director, CNRS Labo de Chizé.
Rémi GAILLARD, PhD student in climate science
Olivier COQ, CNRS Researcher
James COSTA, University Professor, Sorbonne Nouvelle University
Thierry WINKEL, Researcher, IRD
Fabien MALBET, Research Director, Deputy Director of the Observatoire des Sciences de l’Univers de Grenoble, Univ. Grenoble Alpes.
Claire WAELBROECK, CNRS Research Director in palaeoclimatology and oceanography.
Laurent PERRIN, CNRS Research Director
Jérôme FONTANE, Teacher-researcher, engineering sciences
Patricia GARNIER, INRAE Research Director
Philémon AUTIN, Postdoctoral researcher, Grenoble Institute of Environmental Geosciences
Pascal BARLA, INRIA Research Fellow
Denis LOUSTAU, INRAE Research Director
Nicolas PERRY, University Professor, member of the Ecodesign of Sustainable Systems Network
Nicolas GRATIOT, IRD Research Director, geophysicist, Deputy Director of the IGE
David MONTAGNE, Senior Lecturer and researcher, AgroParisTech
Raia-Silvia MASSAD, INRAE Research Fellow, UMR Ecosys
Kaïna PRIVET, Ecologist
Xavier ROBERT, Research fellow, IRD Grenoble
Haye VAN DER WERF, INRAE Research Engineer
Fanny DOMMANGET, Researcher in the ecology of plant invasions
Laurent BETERMIN, Senior Lecturer at the Institut Camille Jordan
Nathalie GEORGE, CNRS Research Director
Bruno FADY, INRAE Research Director
Christine LAUZERAL, Doctor of Ecology, Evolution and Biological Diversity Laboratory – Paul Sabatier University
Guillaume SESCOUSSE, INSERM Research Fellow
Benoit HINGRAY, hydroclimatologist, CNRS researcher
Odile FOSSATI, ecologist, IRD
Camille LEPOITTEVIN, Research engineer, BIOGECO unit, INRAE
Thierry MOUTIN, Professor, Mediterranean Institute of Oceanography
Marie LAUNAY, Deputy Director of the AgroClim Unit, INRAE
Sébastien TRIQUENEAUX, Néel Institute, CNRS
Sylvia PARDONNET, AI studies of geo-natural and man-made environments, IPHC
Joachim THIEBAUT, PhD student in biology and ecotoxicology
Julie PERRIN, Professor, Université Paris 8 Saint-Denis
Luis GARCIA ALLES, CNRS Researcher
Béatrice MARTICORENA, CNRS Research Director, Atmospheric physical chemist
Julie LE GALLO, University Professor in agriculture, Institut Agro Dijon
Frédéric LEGENDRE, Senior Lecturer, Institute of Systematics, Evolution and Biodiversity
Nicolas BEZ, Director of Research, IRD
Boris LEROY, Senior Lecturer, Muséum d’Histoire Naturelle, specialising in Biogeography of Global Change
Aurélie CHARRON, Sustainable Development Research Officer
Aurélien PAULMIER, Researcher in marine biochemistry
Antoine LEBLOIS, Researcher at INRAE
Michel BLAY, Honorary Research Director, CNRS
Lucie ZINGER, Senior Lecturer, Biology Institute of the Ecole Normale Supérieure, Ecology and Evolutionary Biology Section
Laurence DESPRES, Professor, Grenoble Alpes University, Alpine Ecology Laboratory,
Marc PANANCEAU, Teacher-researcher, Université Paris-Saclay
Mathieu MANGEOT, Teacher-researcher in Sustainability Sciences
Patrick CHAUVIN, STI teacher in CPGE, Montauban
Patrick CHAMES, CNRS Research Director, Marseille
Roméo HATCHI, Research engineer at the CEA, mathematician
Myriam QUATRINI, Associate Professor, University of Aix-Marseille
Pascal HOUILLIER, Professor of Physiology, Université Paris Cité
Philippe ROCHE, CNRS Researcher, Grenoble
Jean CHAMEL, Anthropologist, University of Lausanne
Sarah KADA, Postdoctoral researcher
Didier ORANGE, IRD Researcher, Ecohydrologist
François BOUSQUET, CIRAD researcher
Odin MARC, CNRS Researcher, Geosciences Environment Toulouse
Thomas RUPP, Senior Lecturer, Université Savoie Mont Blanc
Valérie D’ACREMONT GENTON, Professor of Global and Environmental Health, University of Lausanne
Sophie GERBER, Researcher, INRAE, Bordeaux
Romain COUILLET, Professor at Grenoble-Alpes University
Flavien LABRE, R&D engineer in soil decontamination
Serge RENOUARD, R&D Director
Caroline ZANCHI, Post-doctoral biologist
François BONHOMME, Research Director, University of Montpellier
Jean-Louis MARTIN, Emeritus Research Director, CNRS
Anne-Marie DARE, Teacher-researcher in physics, Aix-Marseille University
Paul SAVARY, Post-doctoral researcher in ecology, Department of Biology, Concordia University
Pierre-Henri GOUYON-SION, Professor Emeritus, Muséum National d’Histoire Naturelle
Olivier TALAGRAND, Honorary Research Director at the CNRS, Laboratoire de Météorologie Dynamique, Geosciences Department, Institut Pierre-Simon Laplace
Jean-Luc PEIRY, Professor UCA, University of Clermont Auvergne
Charling TAO, Emeritus Research Director CNRS
Patrick PETITJEAN, Paris Astrophysics Institute
Christelle PLUVINET, Naturalist technician
Emmanuel KRIEGER, PhD student in Sustainability Sciences, INRIA
Marina PAVLIDES , Scientific Documentalist
Michelle LECOLLE, Professor, Paris 3 Sorbonne Nouvelle
Fabien PERDU, expert at CEA
Delphine MOUSSARD, Senior Lecturer at the University of Aix-Marseille
Josyane RONCHAIL, Climatologist – LOCEAN
Laurent MANIVEL, Research Director, CNRS
Claudine GUERINI-TOUVIER, Associate Professor
Harry BERNAS, Physicist, CNRS Research Director
François DULAC, CEA Researcher-Engineer in Climate and Environmental Sciences
Cécile MEUNIER, PRAG University of Rennes
Marie GRANGE, PhD, Grenoble Alpes University
Damien CARTRON, CNRS Research Engineer, Maurice Halbwachs Centre
Lilian BLANC, Environmental Sciences researcher, CIRAD
Sandra BARANTAL, post-doctoral researcher in soil ecology, Centre D’Ecologie Fonctionnelle et Évolutive, Montpellier
Sylvie FERRARI, Professor of Ecological Economics, University of Bordeaux
Louisiane BURKART, eco-epidemiologist for the French Polar Institute, French Southern and Antarctic Territories
Fabien HOBLEA, teacher-researcher in environmental geography
Michel PETERSCHMITT, Researcher in Plant Virology
Camille ROSSIGNOL, Department of Chemical and Geological Sciences, University of Cagliari
Frédéric REES, Research Fellow, INRAE
Pauline GARNIER-GERE, Research Fellow, INRAE
Lounès CHIKHI, CNRS Research Director, Evolution and Biological Diversity Laboratory, Toulouse III University
Corinne CHARBONNEL, Astrophysicist, CNRS Research Director and Ordinary Professor
Bernard SCHÉOU, Senior Lecturer, IAE/University of Perpignan
Aude VALADE, Researcher, CIRAD, UMR Functional Ecology and Biogeochemistry of Soils and Agroecosystems, Montpellier
Claude MARANGES, Professor, National Institute of Applied Sciences, Toulouse
Yves RICHARD, Professor, University of Boulogne, Climatology Research Centre
Enrique BARRIUSO, Research Director, INRAE
Yona SILVY, Oceanographer, postdoctoral researcher at the University of Bern
Adrienne RESSAYRE, INRAE researcher
Guillaume CHAGNAUD, post-doctoral researcher in hydro-climatology
Steven RENDON RESTREPO, post-doctoral researcher at the Leibniz-Institut für Astrophysik Potsdam (AIP)
Jeanne GHERARDI SCAO, teacher-researcher UVSQ/LSCE
François AGUILLON, Professor Emeritus of Physics, Université Paris-Saclay
Geoffroy AUBRY, Research fellow CNRS, Institut de Physique de Nice
Sakina-Dorothée AYATA, Senior Lecturer in marine ecology at Sorbonne University
Silvia DE MONTE, CNRS Research Fellow, Biology Institute, ENS
Thierry LEBEL, IRD Research Director
Vincent MOULIN, PhD student in forest ecology at the ECODIV USC INRAE Laboratory
Tristan LAFONT RAPNOUIL, CNRS PhD student
Benoît FONTAINE Research Engineer, Muséum national d’Histoire naturelle, Centre d’Écologie et des Sciences de la Conservation
Casimir DE LAVERGNE, CNRS research fellow, oceanographer
Thomas HERMILLY, PhD student in physical oceanography and biogeochemistry at LOPS
Géraldine BOCQUEHO, INRAE Research Fellow
Mélanie GRENIER, CNRS research fellow, oceanographer
Noam BLOCH, PhD student, Hydraulic engineer, Grenoble Alpes University.
Yannick BIARD, Director of the MEANS multi-criteria evaluation platform and Head of the Environmental Analysis of Agricultural and Food Products project.
Fabrice HERNANDEZ, IRD Research Fellow, oceanographer.
Emmanuel WICKER, HDR Researcher, International Centre for Agricultural Research for Development
Rosemary MORROW, CNAP oceanographer at LEGOS, oceanographer
Claire LEVY CNRS Research Engineer, Oceanographer
Odile PONCY, Botany, Honorary IR CNRS, MNHN, National Museum of Natural History
Mickael CORIAT, Astrophysicist, IRAP, Toulouse
Sylvain CHARLAT, CNRS Researcher, Lyon 1 University.
Julie AUGUSTIN, Post-doctoral researcher in ecology
Matthias BEEKMANN, CNRS Research Director
Florence GAUNET, Researcher, CNRS
Géraldine SARRET, CNRS Research Director, Institute of Earth Sciences
Cyril PANNETIER, post-doctoral researcher at the Observatoire Côte d’Azur (OCA)
Pierre GERARD, Senior Lecturer at AgroParisTech, Institut Diversité, Écologie et Évolution du Vivant (IDEEV)
Pascal GUÉNEL, Research Director, INSERM
Cécile TANNIER, Geographer, CNRS Research Director
Bertrand PLEZ, Professor, Laboratoire Univers et Particules de Montpellier
Marie-Lazarine POULLE , Research Engineer, URCA
Pierrick PENVEN- IRD Research Director – Oceanographer
Fabienne BARATAUD, INRAE Research Engineer
Albert HERTZOG, Teacher-Researcher, LMD, Sorbonne-Université, Laboratoire de Météorologie Dynamique
Antoine BIERJON, CNRS research engineer, planetology
Marine LANET, PhD student at the Laboratoire de Météorologie Dynamique
Aymeric SPIGA, Senior Lecturer at Sorbonne University, Climatologist / Planetologist
Laurent FAIRHEAD, Research Engineer, Laboratoire de Météorologie Dynamique
Marion SAINT-LU, CNRS post-doctoral researcher, climatologist
Cathlee PETIT, post-doctoral researcher in ecology
Dr Sara FLEURY, CNRS Research Engineer
Clémence PERRIN-MALTERRE, Senior Lecturer – HDR, UFR Sciences et Montagne, Deputy Director of the EDYTEM laboratory
Laure VIEU, CNRS Research Director
Alban PLANCHAT, PhD student, Oceanographer
Marie-Alice FOUJOLS, Research Engineer, Climate Modelling, CNRS
Sébastien PAYAN, Deputy Scientific Director of AERIS, Researcher at the Laboratoire Atmosphères Milieux Observations Spatiales
Camille RISI, CNRS research fellow, climatologist
Martin TURBET, CNRS research fellow, Laboratoire de Météorologie Dynamique
Eric FAUDRY, Microbiology researcher
Johan PARRA Research engineer, Laboratoire de Météorologie Dynamique
Louise FOUQUEAU- Post-doctoral researcher in Evolutionary Biology, ISTA (Institute of Science & Technology Austria – University of Basel)
Najda VILLEFRANQUE, CNRS research fellow, climate physicist
Andrea M. DOGLIOLI, Senior Lecturer HDR, Mediterranean Institute of Oceanography
Julien SARRON, Research agronomist, CIRAD
Florian MAUMUS- Research Director, INRAE
Riwal PLOUGONVEN, Professor and Deputy Director of the Laboratoire de Météorologie Dynamique, Ecole Polytechnique
Pascal BONNEFOND, Astronomer, Observatoire de Paris – SYRTE
Cédric SUEUR, Senior Lecturer in Ethology and Animal Ethics, University of Strasbourg
Agathe HELLICH, Environmental Sciences Engineer
Arnaud CHIFFAUDEL, Researcher in Complex Systems Physics
Méril MASSOT, Postdoctoral researcher in microbiology at the Centre for Evolutionary and Functional Ecology, CNRS
Claire DOUTRELANT, CNRS researcher in Evolutionary Ecology
Juliane FLOURY, Professor of Process Engineering, Agrocampus Ouest Rennes
Gwenael RABUT, Biologist, Research Fellow
Laure PECQUERIE, IRD Research Fellow, LEMAR, Brest
Celine SCORNAVACCA, Research Director, CNRS, Montpellier
Dominique DESCLAUX, Researcher in agronomy and plant improvement – INRAE Montpellier
Stéphane MOUNIER, Senior Lecturer, University of Toulon, Geochemist.
Hélène CASTEBRUNET, Senior Lecturer and researcher in urban hydrology, Institute of Environmental Geosciences
Hélène CHAUVEAU, Geographer, researcher associated with the Rural Studies Laboratory
Jean GUILLARD, IR – HDR – Univ. Savoie Mont Blanc, INRAE
Pierre SALOU, CEA Engineer, Large National Heavy Ion Accelerator
Jérémie CAVÉ, IRD researcher, Toulouse
Vincent PRADIER, PhD student, IAE, University of Paris 1
Océane FOIX, Researcher in Seismology
Guillaume GUIMBRETIERE, CNRS Research Fellow, Atmosphere and Cyclones Laboratory
Loïc SALMON, CNRS Researcher, Biophysics
Jean-Christophe HAMILTON, CNRS Research Director, APC (AstroParticle and Cosmology) Laboratory, Paris
Laurène FEINTRENIE, Agronomy and geography researcher at CIRAD, ECOSUR, Campeche, Mexico
Jean-Baptiste DURAND, CIRAD researcher
Julie RIEGEL, Research fellow in anthropology
Daniele ROMANINI, CNRS Research Director, LIPhy – Laboratory of Interdisciplinary Physics
Marwan NACIRI, PhD student in ecology, CEFE University of Montpellier
Yasmine LALAU, Teacher-researcher
Emmanuelle KESSE-GUYOT, INRAE Research Director
Nathalie FROMIN, CNRS research fellow
Gilles RAMSTEIN Research Director, CEA, Climate and Environmental Sciences Laboratory
Guillaume PITON, geoscience research fellow, IGE laboratory
Benjamin GRELIER, hydrology researcher
André MOUNIER, PhD student, ADEME (CIRED/LMD)
Edouard KLEINPETER, CNRS research engineer, Bordeaux
Aude CARRERIC, post-doctoral researcher in climate sciences.
Laurent HUSSON, CNRS Research Director
Vincent LHUILLIER, Senior Lecturer, University of Lorraine
Viviane BALADI, Research Director, CNRS, Sorbonne University
Benjamin MAUROY, Research Director, CNRS
Elsa ABS, Researcher, Laboratory of Climate and Environmental Sciences (LSCE)
François DULAC, CEA Researcher-Engineer in Climate and Environmental Sciences, Paris-Saclay
Philippe LESAGE, Senior Lecturer in Earth Sciences, Savoie Mont Blanc University
Soizic ROCHANGE, Senior Lecturer, Toulouse 3 University
Gabriel HES, PhD student in climate and forest sciences, EDB, University of Toulouse
Kévin JEAN, Senior Lecturer in Epidemiology, MESuRS Laboratory
Théophile TRUCHIS, Physics Centre (CPHT – Polytechnique), Mathematical Physics team, PhD student in evolution modelling
Gaëlle LETORT, CNRS Research Engineer, Institut Pasteur Paris
Andrée DE BACKER, Researcher, University of Lille
Pierre-François VAQUIÉ, Agricultural engineer
Florence VOLAIRE, Research Fellow, French National Research Institute for Agriculture, Food and the Environment
Laurent RIOU, Research Fellow, INSERM
Julien MILLI, Assistant Astronomer, Grenoble Institute of Palaeontology and Astrophysics
Arnaud POUBLAN-COUZARDOT, Neuroscientist, post-doctoral fellow, INSERM
Victor ALTMAYER, Doctor in neurology at the Pitié-Salpêtrière Hospital, doctoral student in cognitive neuroscience at the Brain Institute.
Matthieu CHASSE, Senior Lecturer, PhD in geosciences. Institute of Mineralogy, Materials Physics and Cosmochemistry, Sorbonne University.
Gilles ARMANI, anthropologist
Mireille NAVARRETE, INRAE Research Director
Christian PAROISSIN, Senior Lecturer, Université de Pau et des Pays de l’Adour
Annette BERARD, Researcher in microbial ecology
Bertrand CARISSIMO, Senior researcher at the Atmospheric Environment Teaching and Research Centre
Claire COULY, Project Manager, Réseau national des Maisons des Sciences de l’Homme, support for the “health and environmental crises” mechanism
Patrick CASSAM-CHENAI, CNRS Research Director
Laure HOSSARD, Research agronomist, INRAE, UMR Innovation Montpellier
Simon MUNIER, Hydrometeorology researcher at Météo France
Louise VAN OUDENHOVE, INRAE research fellow
Rémi SERVIEN, INRAE Research Fellow
Hugo MATHE-HUBERT, postdoctoral fellow, CNRS, researcher in Evolutionary Ecology
Maurine MONTAGNAT, Research Director, CNRS
Bernard TOURANCHEAU, Professor, Grenoble Alpes University
David NERINI, Senior Lecturer, Mediterranean Institute of Oceanography
Pascal BRUNET, CNRS engineer
Jean-Marc BONNEVILLE, CNRS Research Fellow, Alpine Ecology Laboratory
Gaëlle CAPITAINE, PhD student in chemical oceanography, Laboratoire National de Métrologie et d’Essais, Mediterranean Institute of Oceanography
Damien SOUS, Oceanographer, MIO
Pierre-Pol LIEBGOTT, Research Fellow
Nadège FONVIEILLE, PhD student in oceanography at MIO
Bruno ZAKARDJIAN Professor, University of Toulon, Mediterranean Institute of Oceanology
Xavier FAIN, climatologist at the CNRS