Preprints
https://doi.org/10.5194/gmd-2023-209
https://doi.org/10.5194/gmd-2023-209
Submitted as: model evaluation paper
 | 
18 Dec 2023
Submitted as: model evaluation paper |  | 18 Dec 2023
Status: this preprint is currently under review for the journal GMD.

How the meteorological spectral nudging impacts on aerosol radiation clouds interactions?

Laurent Menut, Bertrand Bessagnet, Arineh Cholakian, Guillaume Siour, Sylvain Mailler, and Romain Pennel

Abstract. Meteorological and chemical modelling at the regional scale involve nudging to remain consistent with large-scale meteorology and meteo-chemical coupling to properly consider the interactions between aerosols, clouds and radiations. Both types of process can change meteorology, but not for the same reasons and not necessarily in the same way. To assess the possible interactions between nudging and coupling, several simulations are carried out with the WRF-CHIMERE coupled model. By comparison with measurements, we show that the use of nudging significantly improves the model performances. We also show that coupling changes the results much less than nudging. Finally, we show that when nudging is used, it limits the variability in the results due to coupling.

Laurent Menut, Bertrand Bessagnet, Arineh Cholakian, Guillaume Siour, Sylvain Mailler, and Romain Pennel

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Reviewer comments on Menut et al. (gmd-2023-209)', Anonymous Referee #1, 09 Jan 2024
  • RC2: 'Comment on gmd-2023-209', Anonymous Referee #2, 12 Feb 2024
Laurent Menut, Bertrand Bessagnet, Arineh Cholakian, Guillaume Siour, Sylvain Mailler, and Romain Pennel
Laurent Menut, Bertrand Bessagnet, Arineh Cholakian, Guillaume Siour, Sylvain Mailler, and Romain Pennel

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Short summary
This study is about the modelling of the atmospheric composition in Europe and during the summer 2022, when massive wildfires were observed. It is a sensitivity study dedicated to the relative impact of two modelling processes able to modify the meteorology used for the calculation of the atmospheric chemistry and transport of pollutants.