Articles | Volume 15, issue 10
https://doi.org/10.5194/gmd-15-4147-2022
https://doi.org/10.5194/gmd-15-4147-2022
Model experiment description paper
 | 
31 May 2022
Model experiment description paper |  | 31 May 2022

Prediction error growth in a more realistic atmospheric toy model with three spatiotemporal scales

Hynek Bednář and Holger Kantz

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Latest update: 17 Jul 2024
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Short summary
A scale-dependent error growth described by a power law or by a quadratic hypothesis is studied in Lorenz’s system with three spatiotemporal levels. The validity of power law is extended by including a saturation effect. The quadratic hypothesis can only serve as a first guess. In addition, we study the initial error growth for the ECMWF forecast system. Fitting the parameters, we conclude that there is an intrinsic limit of predictability after 22 days.