Articles | Volume 17, issue 23
Research article
08 Dec 2020
Research article |  | 08 Dec 2020

Spatially resolved evaluation of Earth system models with satellite column-averaged CO2

Bettina K. Gier, Michael Buchwitz, Maximilian Reuter, Peter M. Cox, Pierre Friedlingstein, and Veronika Eyring

Data sets

O4Mv3 XCO2 data product version 3 M. Reuter!/dataset/satellite-carbon-dioxide?tab=form

GISS Surface Temperature Analysis (GISTEMP) GISTEMP Team

ISLSCP II MODIS (Collection 4) IGBP Land Cover M. A. Friedl, A. H. Strahler, J. Hodges, F. G. Hall, G. J. Collatz, B. W. Meeson, S. O. Los, E. Brown De Colstoun, and D. R. Landis

Atmospheric Carbon Dioxide Dry Air Mole Fractions from the NOAA ESRL Carbon Cycle Cooperative Global Air Sampling Network E. J. Dlugokencky, P. M. Lang, J. W. Mund, A. M. Crotwell, M. J. Crotwell, and K. W. Thoning

ESMValTool (Version v2.0.0) Andela, B., Broetz, B., de Mora, L., Drost, N., Eyring, V., Koldunov,N., Lauer, A., Mueller, B., Predoi, V., Righi, M., Schlund, M.,Vegas-Regidor, J., Zimmermann, K., Adeniyi, K., Arnone, E.,Bellprat, O., Berg, P., Bock, L., Caron, L.-P., Carvalhais, N., Cionni, I., Cortesi, N., Corti, S., Crezee, B., Davin, E. L., Davini,P., Deser, C., Diblen, F., Docquier, D., Dreyer, L., Ehbrecht,C., Earnshaw, P., Gier, B., Gonzalez-Reviriego, N., Goodman,P., Hagemann, S., von Hardenberg, J., Hassler, B., Hunter, A., Kadow, C., Kindermann, S., Koirala, S., Lledó, L., Lejeune, Q.,Lembo, V., Little, B., Loosveldt-Tomas, S., Lorenz, R., Lovato,T., Lucarini, V., Massonnet, F., Mohr, C. W., Amarjiit, P., Pérez-Zanón, N., Phillips, A., Russell, J., Sandstad, M., Sellar, A., Sen-ftleben, D., Serva, F., Sillmann, J., Stacke, T., Swaminathan, R.,Torralba, V., and Weigel, K.

ESMValCore Andela, B., Broetz, B., de Mora, L., Drost, N., Eyring, V., Koldunov, N., Lauer, A., Predoi, V., Righi, M., Schlund, M., Vegas-Regidor, J., Zimmermann, K., Bock, L., Diblen, F., Dreyer, L., Earnshaw, P., Hassler, B., Little, B., Loosveldt-Tomas, S., Smeets, S., Camphuijsen, J., Gier, B.K., Weigel, K., Hauser, M., Kalverla, P., Galytska, E., Cos-Espuña, P., Pelupessy, I., Koirala, S., Stacke, T., Alidoost, S., and Jury, M.

Short summary
Models from Coupled Model Intercomparison Project (CMIP) phases 5 and 6 are compared to a satellite data product of column-averaged CO2 mole fractions (XCO2). The previously believed discrepancy of the negative trend in seasonal cycle amplitude in the satellite product, which is not seen in in situ data nor in the models, is attributed to a sampling characteristic. Furthermore, CMIP6 models are shown to have made progress in reproducing the observed XCO2 time series compared to CMIP5.
Final-revised paper