Articles | Volume 13, issue 11
Geosci. Model Dev., 13, 5119–5145, 2020
https://doi.org/10.5194/gmd-13-5119-2020

Special issue: Particle-based methods for simulating atmospheric aerosol...

Geosci. Model Dev., 13, 5119–5145, 2020
https://doi.org/10.5194/gmd-13-5119-2020

Development and technical paper 30 Oct 2020

Development and technical paper | 30 Oct 2020

Collisional growth in a particle-based cloud microphysical model: insights from column model simulations using LCM1D (v1.0)

Simon Unterstrasser et al.

Data sets

Simulation/Plot Data of Coalescence/aggregation column model S. Unterstrasser https://doi.org/10.5281/zenodo.4030878

Model code and software

Collisonal growth Column model LCM v1.0 S. Unterstrasser https://doi.org/10.5281/zenodo.4031214

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Short summary
Particle-based cloud models use simulation particles for the representation of cloud particles like droplets or ice crystals. The collision and merging of cloud particles (i.e. collisional growth a.k.a. collection in the case of cloud droplets and aggregation in the case of ice crystals) was found to be a numerically challenging process in such models. The study presents verification exercises in a 1D column model, where sedimentation and collisional growth are the only active processes.