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Journal Articles Journal of Advances in Modeling Earth Systems Year : 2020

Presentation and evaluation of the IPSL‐CM6A‐LR climate model

Olivier Boucher (1) , Jérôme Servonnat (2) , Anna Lea Albright (1) , Olivier Aumont (3) , Yves Balkanski (2) , Vladislav Bastrikov (4) , Slimane Bekki (5) , Rémy Bonnet (6) , Sandrine Bony (1) , Laurent Bopp (1) , Pascale Braconnot (2) , Patrick Brockmann (7) , Patricia Cadule (6) , Arnaud Caubel (8) , Frédérique Cheruy (1) , Francis Codron (9) , Anne Cozic (8) , David Cugnet (1) , Fabio d'Andrea (1) , Paolo Davini (10) , Casimir de Lavergne (3) , Sébastien Denvil (6) , Julie Deshayes (3) , Marion Devilliers (11) , Agnès Ducharne (12) , Jean-Louis Dufresne (1) , Eliott Dupont (6) , Christian Éthé (6) , Laurent Fairhead (1) , Lola Falletti (5) , Simona Flavoni (9) , Marie-Alice Foujols (6) , Sébastien Gardoll (6) , Guillaume Gastineau (9) , Josefine Ghattas (6) , Jean-Yves Grandpeix (1) , Bertrand Guenet (13) , Lionel Guez (1) , Éric Guilyardi (9) , Matthieu Guimberteau (4) , Didier Hauglustaine (2) , Frédéric Hourdin (1) , Abderrahmane Idelkadi (1) , Sylvie Joussaume (2) , Masa Kageyama (7) , Myriam Khodri (9) , Gerhard Krinner (14) , Nicolas Lebas (9) , Guillaume Levavasseur (6) , Claire Lévy (3) , Laurent Li (1) , Francois Lott (1) , Thibaut Lurton (6) , Sebastiaan Luyssaert (15) , Gurvan Madec (3) , Jean-Baptiste Madeleine (1) , Fabienne Maignan (13, 4) , Marion Marchand (5) , Olivier Marti (2) , Lidia Mellul (1) , Yann Meurdesoif (8) , Juliette Mignot (9) , Ionela Musat , Catherine Ottle (13) , Philippe Peylin (4) , Yann Planton (9) , Jan Polcher (1) , Catherine Rio (16) , Nicolas Rochetin (1) , clement rousset (3) , Pierre Sepulchre (7) , Adriana Sima (1) , Didier Swingedouw (11) , Rémi Thiéblemont (17) , Abdoul Khadre Traore (1) , Martin Vancoppenolle (3) , Jessica Vial (1) , Jérôme Vialard (9) , Nicolas Viovy (13) , Nicolas Vuichard (13)
Slimane Bekki
Patrick Brockmann
Patricia Cadule
Francis Codron
Anne Cozic
  • Function : Author
Lola Falletti
  • Function : Author
  • PersonId : 949677
Éric Guilyardi
Masa Kageyama
Myriam Khodri
Nicolas Lebas
Laurent Li
Gurvan Madec
Marion Marchand
Juliette Mignot
Ionela Musat
  • Function : Author
Yann Planton
Pierre Sepulchre
Jérôme Vialard

Abstract

This study presents the global climate model IPSL-CM6A-LR developed at Institut Pierre-Simon Laplace (IPSL) to study natural climate variability and climate response to natural and anthropogenic forcings as part of the sixth phase of the Coupled Model Intercomparison Project (CMIP6). This article describes the different model components, their coupling, and the simulated climate in comparison to previous model versions. We focus here on the representation of the physical climate along with the main characteristics of the global carbon cycle. The model's climatology, as assessed from a range of metrics (related in particular to radiation, temperature, precipitation, and wind), is strongly improved in comparison to previous model versions. Although they are reduced, a number of known biases and shortcomings (e.g., double Intertropical Convergence Zone [ITCZ], frequency of midlatitude wintertime blockings, and El Niño–Southern Oscillation [ENSO] dynamics) persist. The equilibrium climate sensitivity and transient climate response have both increased from the previous climate model IPSL-CM5A-LR used in CMIP5. A large ensemble of more than 30 members for the historical period (1850–2018) and a smaller ensemble for a range of emissions scenarios (until 2100 and 2300) are also presented and discussed.
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Dates and versions

hal-02875593 , version 1 (16-07-2020)
hal-02875593 , version 2 (06-01-2023)

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Attribution - NonCommercial

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Olivier Boucher, Jérôme Servonnat, Anna Lea Albright, Olivier Aumont, Yves Balkanski, et al.. Presentation and evaluation of the IPSL‐CM6A‐LR climate model. Journal of Advances in Modeling Earth Systems, 2020, 12 (7), pp.e2019MS002010. ⟨10.1029/2019MS002010⟩. ⟨hal-02875593v2⟩
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