UCLALES-SALSA Simulation Data for the SPICULE-RF04b Cloud Case from "Secondary Ice Formation in Cumulus Congestus Clouds: Insights from Observations and Aerosol-Aware Large-Eddy Simulations"

Datasets include UCLALES-SALSA simulation outputs for a system of cumulus congestus (CuCg) clouds observed in 5 June 2021 over the Southern Great Plains in the United States of America during the Secondary Production of Ice in Cumulus Experiment (SPICULE) performed in May-June 2021. The selected cloud case was labeled as SPICULE_RF04b_20210605 to match the mission name.

Airborne in situ observations used for model initialization and validation were presented by Lawson et al. (2023) and can be found in a public repository (https://www.eol.ucar.edu/field_projects/spicule). The simulation time interval goes from 18:30UTC to 21:30UTC including the first hour as a spinup period.

The goal of the study was to understand the role of secondary ice formation in the glaciation of young cumulus congestus that lack sufficient ice nucleating particles using large-eddy-simulations that reproduced the observed changes in hydrometeor size distributions induced by secondary ice production due to droplet shattering (Phillips et al. 2017) , rime splintering (Hallet and Mossop, 1974) and ice-ice collisional breakup (Phillips et al. 2017) modified by Grzegorczyk et al. (2025).

In this version, the datasets have been relocated to a permanent repository, with improved description and organization to facilitate access.