Articles | Volume 13, issue 6
Methods for assessment of models
 | Highlight paper
18 Jun 2020
Methods for assessment of models | Highlight paper |  | 18 Jun 2020

Towards an objective assessment of climate multi-model ensembles – a case study: the Senegalo-Mauritanian upwelling region

Juliette Mignot, Carlos Mejia, Charles Sorror, Adama Sylla, Michel Crépon, and Sylvie Thiria

Related authors

Impact of volcanic eruptions on CMIP6 decadal predictions: A multi-model analysis
Roberto Bilbao, Pablo Ortega, Didier Swingedouw, Leon Hermanson, Panos Athanasiadis, Rosie Eade, Marion Devilliers, Francisco Doblas-Reyes, Nick Dunstone, An-Chi Ho, William Merryfield, Juliette Mignot, Dario Nicolì, Margarida Samsó, Reinel Sospedra-Alfonso, Xian Wu, and Stephen Yeager
Earth Syst. Dynam. Discuss.,,, 2023
Preprint under review for ESD
Short summary
IPSL-CM5A2 – an Earth system model designed for multi-millennial climate simulations
Pierre Sepulchre, Arnaud Caubel, Jean-Baptiste Ladant, Laurent Bopp, Olivier Boucher, Pascale Braconnot, Patrick Brockmann, Anne Cozic, Yannick Donnadieu, Jean-Louis Dufresne, Victor Estella-Perez, Christian Ethé, Frédéric Fluteau, Marie-Alice Foujols, Guillaume Gastineau, Josefine Ghattas, Didier Hauglustaine, Frédéric Hourdin, Masa Kageyama, Myriam Khodri, Olivier Marti, Yann Meurdesoif, Juliette Mignot, Anta-Clarisse Sarr, Jérôme Servonnat, Didier Swingedouw, Sophie Szopa, and Delphine Tardif
Geosci. Model Dev., 13, 3011–3053,,, 2020
Short summary
Is deoxygenation detectable before warming in the thermocline?
Angélique Hameau, Thomas L. Frölicher, Juliette Mignot, and Fortunat Joos
Biogeosciences, 17, 1877–1895,,, 2020
Short summary
Reconstructing climatic modes of variability from proxy records using ClimIndRec version 1.0
Simon Michel, Didier Swingedouw, Marie Chavent, Pablo Ortega, Juliette Mignot, and Myriam Khodri
Geosci. Model Dev., 13, 841–858,,, 2020
Short summary
Generation of Rossby waves off the Cape Verde Peninsula: the role of the coastline
Jérôme Sirven, Juliette Mignot, and Michel Crépon
Ocean Sci., 15, 1667–1690,,, 2019
Short summary

Related subject area

Numerical methods
A comparison of Eulerian and Lagrangian methods for vertical particle transport in the water column
Tor Nordam, Ruben Kristiansen, Raymond Nepstad, Erik van Sebille, and Andy M. Booth
Geosci. Model Dev., 16, 5339–5363,,, 2023
Short summary
AutoQS v1: automatic parametrization of QuickSampling based on training images analysis
Mathieu Gravey and Grégoire Mariethoz
Geosci. Model Dev., 16, 5265–5279,,, 2023
Short summary
Sweep Interpolation: A Fourth-Order Accurate Cost Effective Scheme in the Global Environmental Multiscale Model
Mohammad Mortezazadeh, Jean-Francois Cossette, Ashu Dastoor, Jean de Grandpré, Irena Ivanova, and Abdessamad Qaddouri
EGUsphere,,, 2023
Short summary
Implementation and application of ensemble optimal interpolation on an operational chemistry weather model for improving PM2.5 and visibility predictions
Siting Li, Ping Wang, Hong Wang, Yue Peng, Zhaodong Liu, Wenjie Zhang, Hongli Liu, Yaqiang Wang, Huizheng Che, and Xiaoye Zhang
Geosci. Model Dev., 16, 4171–4191,,, 2023
Short summary
A dynamical core based on a discontinuous Galerkin method for higher-order finite-element sea ice modeling
Thomas Richter, Véronique Dansereau, Christian Lessig, and Piotr Minakowski
Geosci. Model Dev., 16, 3907–3926,,, 2023
Short summary

Cited articles

Borodina, A., Fischer, E. M., and Knutti, R.: Potential to constrain projections of hot temperature extremes, J. Climate, 30, 9949–9964,, 2017. 
Capet, X., Estrade, P., Machu, E., Ndoye, S., Grelet, J., Lazar, A., Marié, L., Dausse, D., Brehmer, P., Capet, X., Estrade, P., Machu, E., Ndoye, S., Grelet, J., Lazar, A., Marié, L., Dausse, D., and Brehmer, P.: On the Dynamics of the Southern Senegal Upwelling Center: Observed Variability from Synoptic to Superinertial Scales, J. Phys. Oceanogr., 47, 155–180,, 2017. 
Collins, M., Knutti, R., Dufresne, J.-L., Fichefet, T., Friedlingstein, P., Gao, X., Gutowski, W. J., Johns, T., Krinner, G., Shongwe, M., Tebaldi, C., Weaver, A. J., and Wehner, M.: Long-term Climate Change: Projections, Commitments and Irreversibility, in Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Stocker, T. F., Qin, G.-K. D., Plattner, M., Tignor, S. K., Allen, J., Boschung, A., Nauels, Y., Xia, Y., Bex, P. M., and Midgley, V., Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, 2014. 
Cox, P. M., Pearson, D., Booth, B. B., Friedlingstein, P., Huntingford, C., Jones, C. D., and Luke, C. M.: Sensitivity of tropical carbon to climate change constrained by carbon dioxide variability, Nature, 494, 341–344,, 2013. 
Cropper, T. E., Hanna, E., and Bigg, G. R.: Spatial and temporal seasonal trends in coastal upwelling off Northwest Africa, 1981-2012, Deep. Res. Pt. I, 86, 94–111,, 2014. 
Short summary
The most robust representation of climate is usually obtained by averaging a large number of simulations, thereby cancelling individual model errors. Here, we work towards an objective way of selecting the least biased models over a certain region, based on physical parameters. This statistical method based on a neural classifier and multi-correspondence analysis is illustrated here for the Senegalo-Mauritanian region, but it could potentially be developed for any other region or process.