[A-CG41] Aircraft and UAV Observations for Earth-planetary sciences

[ACG41-P01] Idealized Large-Eddy Simulations of Arctic Mixed-Phase Clouds Observed during Aircraft Experiments

*Ong Chia Rui¹, Makoto Koike¹ (1.The University of Tokyo)

Keywords:Mixed-phase clouds, Large-eddy simulation

Low-level mixed-phase clouds play very important role for Arctic climate. However, there is still great uncertainty in understanding microphysical properties and processes of these clouds and how they are represented in numerical model simulations. In general, Arctic mixed-phase clouds have been studied using large eddy simulation (LES) and model inter-comparison has been conducted for specific cloud systems observed during field campaigns to evaluate model performance. A cloud system observed over the open sea during the Mixed-Phase Arctic Cloud Experiment, M-PACE, is one of these well-known systems, in which active riming took place. In this study, we simulate this cloud system to evaluate performance of the SCALE-AMPS LES model, which adopts one of the most sophisticated cloud microphysical representation, following the setup used in the previous inter-comparison study. We also conduct sensitivity test of ice habits to study the impact of different ice habits on evolution of mixed-phase clouds.