OZCAR: The French Network of Critical Zone Observatories

J. Gaillardet 1 I. Braud 2 F. Hankard S. Anquetin 3 Olivier Bour 4 N. Dorfliger Jean-Raynald de Dreuzy 4 S. Galle 3 C. Galy Sébastien Gogo 5, 6 L. Gourcy F. Habets Fatima Laggoun-Défarge 5, 6 Laurent Longuevergne 4 Tanguy Le Borgne 4 F. Naaim-Bouvet 7 G. Nord V. Simonneaux 8 D. Six 3 T. Tallec 8 C. Valentin 9 G. Abril 10 P. Allemand 11 A. Arènes B. Arfib 12, 13 L. Arnaud N. Arnaud P. Arnaud 14 S. Audry 15 Vincent Bailly Comte 13, 16 C. Batiot 17, 13 Annick Battais 4 H. Bellot 7 Eric Bernard 18 C. Bertrand 19, 13 H. Bessière Stéphane Binet 5, 6, 13 J. Bodin 20 X. Bodin L. Boithias J. Bouchez 21 B. Boudevillain I. Moussa F. Branger 2 J. Braun Pascal Brunet 13, 22 B. Caceres D. Calmels 23 B. Cappelaere 17 H. Celle-Jeanton 19 F. Chabaux 24 K. Chalikakis 25, 26, 13 C. Champollion 27 Yoann Copard 28 C. Cotel Philippe Davy 4 P. Deline G. Delrieu J. Demarty 17 C. Dessert 29 M. Dumont C. Emblanch 25, 26, 13 J. Ezzahar 30 M. Estèves V. Favier 3 M. Faucheux 31 N. Filizola 32 P. Flammarion 33 P. Floury O. Fovet Matthieu Fournier 34, 13 J. Francez 35 L. Gandois 36 C. Gascuel E. Gayer 37 C. Genthon 3 F. Gérard D. Gilbert 38 I. Gouttevin 2 M. Grippa 15 Gérard Gruau 4 A. Jardani 13, 34 Laurent Jeanneau 4 J. Join H. Jourde 17, 13, 22 F. Karbou 39 Y. Lagadeuc 40 E. Lajeunesse 29 R. Lastennet 41, 13 W. Lavado 42 E. Lawin T. Lebel 3 C. Le Bouteiller 7 C. Legout 43 Y. Lejeune 44 E. Le Meur 3 N. Le Moigne 45 J. Lions A. Lucas 46 J. Malet C. Marais-Sicre 8 Jean-Christophe Maréchal 16, 13 C. Marlin 47 P. Martin 48 J. Martin 49 N. Massei 34, 13 A. Mauclerc Naomi Mazzilli 25, 26, 13 J. Molénat P. Moreira-Turcq 50 E. Mougin 15 S. Morin 51 J. Ngoupayou G. Panthou 3 C. Peugeot 17 G. Picard 52 C. Pierret 53 G. Porel 54 A. Probst 36, 13 J. Probst 36, 13 A. Rabatel 3 D. Raclot 55 L. Ravanel F. Rejiba P. René 56 O. Ribolzi 15 J. Riotte 50 A. Rivière H. Robain 57 L. Ruiz J. Sanchez-Perez W. Santini 15 S. Sauvage 36 P. Schoeneich J. Seidel 22, 13 M. Sekhar 58 O. Sengtaheuanghoung 59 N. Silvera 60 M. Steinmann 19, 13 A. Soruco 61 G. Tallec 53 E. Thibert 7 D. Lao 62, 13 C. Vincent 3 D. Viville 63 P. Wagnon R. Zitouna David Labat 15, 13
6 Biogéosystèmes Continentaux - UMR7327
ISTO - Institut des Sciences de la Terre d'Orléans - UMR7327 : UMR7327
21 APC - Neutrinos
APC - UMR 7164 - AstroParticule et Cosmologie, LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
54 Argile, sol et Altérations
IC2MP - Institut de Chimie des Milieux et Matériaux de Poitiers
Abstract : The French critical zone initiative, called OZCAR (Observatoires de la Zone Critique–Application et Recherche or Critical Zone Observatories–Application and Research) is a National Research Infrastructure (RI). OZCAR-RI is a network of instrumented sites, bringing together 21 pre-existing research observatories monitoring different compartments of the zone situated between “the rock and the sky,” the Earth’s skin or critical zone (CZ), over the long term. These observatories are regionally based and have specific initial scientific questions, monitoring strategies, databases, and modeling activities. The diversity of OZCAR-RI observatories and sites is well representative of the heterogeneity of the CZ and of the scientific communities studying it. Despite this diversity, all OZCAR-RI sites share a main overarching mandate, which is to monitor, understand, and predict (“earthcast”) the fluxes of water and matter of the Earth’s near surface and how they will change in response to the “new climatic regime.” The vision for OZCAR strategic development aims at designing an open infrastructure, building a national CZ community able to share a systemic representation of the CZ , and educating a new generation of scientists more apt to tackle the wicked problem of the Anthropocene. OZCAR articulates around: (i) a set of common scientific questions and cross-cutting scientific activities using the wealth of OZCAR-RI observatories, (ii) an ambitious instrumental development program, and (iii) a better interaction between data and models to integrate the different time and spatial scales. Internationally, OZCAR-RI aims at strengthening the CZ community by providing a model of organization for pre-existing observatories and by offering CZ instrumented sites. OZCAR is one of two French mirrors of the European Strategy Forum on Research Infrastructure (eLTER-ESFRI) project.
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J. Gaillardet, I. Braud, F. Hankard, S. Anquetin, Olivier Bour, et al.. OZCAR: The French Network of Critical Zone Observatories. Vadose Zone Journal, Soil science society of America - Geological society of America., 2018, 17 (1), pp.1-24. ⟨10.2136/vzj2018.04.0067⟩. ⟨insu-01944414⟩

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