DOI: 10.35097/hnu5eyk3xz4n3bkj
title: Research data for "Sensitivities of Simulated Mixed-phase Arctic Multilayer Clouds to Primary and Secondary Ice Processes"

description: This archive contains research data presented in the manuscript "Sensitivities of Simulated Mixed-phase Arctic Multilayer Clouds to Primary and Secondary Ice Processes" with DOI: 10.5194/egusphere-2024-2988. In this study, the microphysical sensitivity of Arctic mixed-phase multilayer clouds are examined via two case studies observed during the MOSAiC campaign in September 2020. Sensitivity simulations on cloud droplet activation, primary ice, and secondary ice processes were performed. The ICON model is used to model these clouds and observational data from the MOSAiC campaign is used to constrain and evaluate the model.
description: This archive contains research data presented in the manuscript "Sensitivities of Simulated Mixed-phase Arctic Multilayer Clouds to Primary and Secondary Ice Processes" with DOI: 10.5194/egusphere-2024-2988 

Content:
Simulations September 01 - September 02 2020; 
GRID R3B8; 6km grid spacing, run with 1moment microphysics initialised at 00UTC on the 01-09-2020 using ICON Global 13km 
-R3B8_0109_0309.nc 

GRID: R3B10; 2-moment 1.6km grid spacing initialised at 04UTC 
- Reference run; R3B10_0109_0209_orig.nc : with Hande et al (2015,2016) CCN and INP parameterisations 
Sensitivity Studies: 
- R3B10_0109_0209_INP.nc : implemented INP polynomial at warm temperatures in immersion freezing and scaled down immersion, rain freeze and depositional freezing at cold temperatures 
- R3B10_0109_0209_pr1L.nc : for prescribed 1 per L 

GRID: R3B12; 2-moment 400m grid spacing 
- R3B12_0109_0209.nc : initialised at 06UTC and nudged by the output from R3B10_0109_0209_pr1L.nc with prescribed 1 per L 

GRID R3B14; 2-moment 100m grid spacing 
- R3B14_0109_0209.nc : initialised at 08UTC and nudged by R3B12_0109_0209.nc with prescribed 1 per L 


Simulations September 03 - September 04 2020; 

GRID R3B8; run with 1moment microphysics initialised at 00UTC on 03-09-2020 
- R3B8_0309_0409.nc 

GRID R3B10;2-moment 1.6km grid spacing initialised at 04UTC 
- Reference run: R3B10_0309_0409_orig.nc 
Primary Ice Sensitivity Studies: 
- R3B10_0309_0409_INP.nc : implemented INP polynomial at warm temperatures in immersion freezing and scaled down immersion, rain freeze and depositional freezing at cold temperatures 
- R3B10_0309_0409_INPx1E4.nc : same as above but scaled by 10000 
- R3B10_0309_0409_INPx1E6.nc : same as above but scaled by 1E6 
- R3B10_0309_0409_pr1L.nc : prescribed 1 per L at warm temperatures 
Cloud Droplet Sensitivity: 
- R3B10_0309_0409_pr1L_CCN.nc : prescribed ice at warm temperatures plus a CCN scaling 
Secondary Ice Sensitivity: 
- R3B10_0309_0409_orig_SIP.nc : original primary ice nucleation with SIP implementation with droplet shattering and break-up collision added on top of the reference rime-splintering. Collisional break-up is parameterised by Takahashi 
- R3B10_0309_0409_INP_SIP.nc : new immersion freezing parameterisation with SIP as above 
- R3B10_0309_0409_INP_SIP_BR_scaled.nc : new immersion freezing parameterisation and SIP with a scaled down breakup (SIP) parameterisation 
- R3B10_0309_0409_INP_CCN_SIP_BR_scaled.nc : new immersion freezing parameterisation with scaled down CCN concentration and SIP with a scaled down breakup (SIP) parameterisation 
- R3B10_0309_0409_pr1L_SIP.nc 

GRID R3B12; 2-moment 400m grid spacing 
- R3B12_0309_0409.nc : initialised 06UTC and nudged by simulation with prescribed 1 per L (R3B10_0309_0409_pr1L) 

GRID R3B14; 2-moment 100m grid spacing 
- R3B14_0309_0409.nc: initialised at 08UTC and nudged by R3B12_0309_0409 with prescribed 1 per L
description: The data are in netCDF format. All data has been postprocessed and only contains the mean values over a smaller region ~15km surrounding the ship. Files follow the format __.nc 

Please see Table 1 in the paper for the description of the simulations performed. Each 2-moment run has accumulated process rates associated with the simulation named ___process_rates.nc.