Articles | Volume 14, issue 4
Geosci. Model Dev., 14, 1921–1948, 2021
Geosci. Model Dev., 14, 1921–1948, 2021
Model evaluation paper
12 Apr 2021
Model evaluation paper | 12 Apr 2021

Quantifying and attributing time step sensitivities in present-day climate simulations conducted with EAMv1

Hui Wan et al.

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Cited articles

Barrett, A. I., Wellmann, C., Seifert, A., Hoose, C., Vogel, B., and Kunz, M.: One Step at a Time: How Model Time Step Significantly Affects Convection-Permitting Simulations, J. Adv. Model. Earth Sy., 11, 641–658,, 2019. a
Beljaars, A., Bechtold, P., Köhler, M., Morcrette, J. J., A.Tompkins, Viterbo, P., and Wedi, N.: The numerics of physicalparameterization, in: Seminar on Recent Developments in Numerical Methods for Atmospheric and Ocean Modelling, European Centre For Medium-Range Weather Forecasts, Shinfield Park, Reading, United Kingdom, ECMWF, 2004. a, b
Beljaars, A., Dutra, E., Balsamo, G., and Lemarié, F.: On the numerical stability of surface–atmosphere coupling in weather and climate models, Geosci. Model Dev., 10, 977–989,, 2017. a
Beljaars, A., Balsamo, G., Bechtold, P., Bozzo, A., Forbes, R., Hogan, R. J., Köhler, M., Morcrette, J.-J., Tompkins, A. M., Viterbo, P., and Wedi, N.: The Numerics of Physical Parametrization in the ECMWF Model, Front. Earth Sci., 6, 137,, 2018. a, b
Beljaars, A. C. M.: Numerical schemes for parametrizations, in: Seminar on Numerical Methods in Atmospheric Models, European Centre For Medium-Range Weather Forecasts, Shinfield Park, Reading, 1–42, available at: (last access: 6 April 2021), 1991. a
Short summary
Numerical models used in weather and climate research and prediction unavoidably contain numerical errors resulting from temporal discretization, and the impact of such errors can be substantial. Complex process interactions often make it difficult to pinpoint the exact sources of such errors. This study uses a series of sensitivity experiments to identify components in a global atmosphere model that are responsible for time step sensitivities in various cloud regimes.