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- W4386010300 abstract "<strong class=journal-contentHeaderColor>Abstract.</strong> Here we present for the first time a proof of concept for an emulation-based method that uses a large-eddy simulations (LES) to present sub-grid cloud processes in a general circulation model (GCM). We focus on two key variables affecting the properties of shallow marine clouds: updraft velocity and precipitation formation. The LES is able to describe these processes with high resolution accounting for the realistic variability in cloud properties. We show that the selected emulation method is 5 able to represent the LES outcome with relatively good accuracy and that the updraft velocity and precipitation emulators can be coupled with the GCM practically without increasing the computational costs. We also show that the emulators influence the climate simulated by the GCM, but do not consistently improve or worsen the agreement with observations on cloud related properties. Although especially the updraft velocity at cloud base is better captured. A more quantitative evaluation of the emulator impacts against observations would, however, have required model re-tuning, which is a significant task and thus could 10 not be included in this proof-of-concept study. All in all, the approach introduced here is a promising candidate for representing detailed cloud and aerosol related sub-grid processes in GCMs. Further development work together with increasing computing capacity can be expected to improve the accuracy and the applicability of the approach in climate simulations." @default.
- W4386010300 created "2023-08-21" @default.
- W4386010300 date "2023-08-21" @default.
- W4386010300 modified "2023-10-17" @default.
- W4386010300 title "Comment on egusphere-2023-912" @default.
- W4386010300 doi "https://doi.org/10.5194/egusphere-2023-912-rc3" @default.
- W4386010300 hasPublicationYear "2023" @default.
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