Articles | Volume 13, issue 9
Geosci. Model Dev., 13, 4271–4285, 2020
https://doi.org/10.5194/gmd-13-4271-2020
Geosci. Model Dev., 13, 4271–4285, 2020
https://doi.org/10.5194/gmd-13-4271-2020

Development and technical paper 16 Sep 2020

Development and technical paper | 16 Sep 2020

Can machine learning improve the model representation of turbulent kinetic energy dissipation rate in the boundary layer for complex terrain?

Nicola Bodini et al.

Data sets

High-resolution data from sonic anemometers on the meteorological towers at Perdigão UCAR/NCAR, EOL https://doi.org/10.26023/8X1N-TCT4-P50X

Model code and software

Machine learning code for TKE dissipation rates Nicola Bodini https://doi.org/10.5281/zenodo.3754710

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Short summary
While turbulence dissipation rate (ε) is an essential parameter for the prediction of wind speed, its current representation in weather prediction models is inaccurate, especially in complex terrain. In this study, we leverage the potential of machine-learning techniques to provide a more accurate representation of turbulence dissipation rate. Our results show a 30 % reduction in the average error compared to the current model representation of ε and a total elimination of its average bias.