ICON-LEM Ny-Ålesund low-level clouds polar night and polar day 2021/2022

Low-level clouds during the polar night and polar day simulated in ICON-LEM for Ny-Ålesund 

This data set was created using the ICON-LEM model with ca. 600m resolution and a diagnostic tool "microphysical wrapper". It contains the meteogram output of the Ny-Ålesund column (Svalbard) and the microphysical process rates. The data was created for the polar night (Nov 2021- Feb 2022) and polar day (May - Aug 2022). Clouds are classified as low-level if their cloud top height (CTH) is below 2.5 km and the distance between any cloud with CTH above 2.5 km is at least 500 m higher. The data set was first used and described in the publication: 

T. Kiszler, D. Ori, V. Schemann. (preprint) Microphysical processes involving the vapour phase dominate in simulated low-level Arctic clouds. Atmospheric Physics and Chemistry, https://doi.org/10.5194/egusphere-2023-2986

This data is related to the repository https://github.com/TracyMcBean/Kiszler_et_al_2023_microphysics

File description:

*_PN is polar night data

*_PD is polar day data

LLC_meteo_<yyyymm>_ICONv1_v6.nc : Contains the meteogram variables (thermodynamics, surface variables, hydrometeors)

LLC_wrapper_mass_<yyyymm>_ICONv1_v6.nc : Contains hydrometeors masses after diagnostic run of a microphysical wrapper

LLC_wrapper_tend_<yyyymm>_ICONv1_v6.nc : Contains the mircophysical process rates showing the mass change per timestep 

low_cloud_times_v6_*.csv : Contains the date and time when a low-level cloud was detected