Published July 10, 2025 | Version v1
Dataset Open

Model Code and Experimental Data Supporting ''Homogeneous ice nucleation in adsorbed water films: A theoretical approach" by Laaksonen et al.

Creators

  • 1. Finnish Meteorological Institute

Contributors

Description

GINCUP-main.zip Compressed archive (.zip) with Python scripts, README, and example input files.

Silica_adsorption.zip: Nitrogen adsorption and desorption isotherms data on non-porous silica. Measured with a BELSORP MaxII at the Finnish Meteorological Institute

SiO2_sizedistribution.txt It includes measurements of particle size distribution for silica (SiO₂) powder.

1percentAF_SiO2.xlsx This file contains experimental results for silica particles with 1 % activated fraction (AF) at specific SiO₂ concentrations, as discussed in Section 3 (Experimental section) and in the analysis related to Figure 9 of the manuscript. The data were used to evaluate the critical supersaturations and to compare experimental ice nucleation onset conditions with theoretical predictions for silica particles

Files

GINCUP-main.zip

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Additional details

Identifiers

URL
https://github.com/Golnaz-roudsari/GINCUP
B2SHARE Legacy Record ID
de4f05ce04a344b284ae919a7665606a
URL
https://etsin.fairdata.fi/dataset/d23bf30b-dff5-49e3-a4ac-d92512a48b99

Related works

Cites
Other: 10.5194/egusphere-2024-4095, 2025 (DOI)

Funding

Academy of Finland, Center of Excellence in Atmospheric Sciences, project number 307331

Instruments

SPIN (Spectrometer for Ice Nuclei, DMT)
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Belsorp MAX II (Microtrac MRB)
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SMPS (TSI 3938)
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FMI metadata

Link to external data location (URL)
https://github.com/Golnaz-roudsari/GINCUP
Process step
Silica powder prepared by grinding fused silica beads., Particle size distribution measured with SMPS., Nitrogen adsorption isotherms measured at 77.3 K., Ice nucleation activity measured with SPIN instrument under controlled T and RH., Data averaged and post-processed for analysis.
Lineage
Experimental data were generated using silica (SiO₂) particles in laboratory measurements. Particle size distributions were obtained using a Scanning Mobility Particle Sizer (SMPS). Adsorption isotherms were measured with a Belsorp MAX II gas adsorption instrument. Ice nucleation experiments were performed with the SPIN continuous-flow diffusion chamber. Data were processed and averaged into temperature and humidity bins, following the methodology described in Section 3 of the related publication
Platforms
Laboratory instruments
Model
GINCUP (General Ice Nucleation Computation Platform), a theoretical model based on Frenkel–Halsey–Hill (FHH) adsorption theory and classical nucleation theory. The source code is available at https://github.com/Golnaz-roudsari/GINCUP
Parameter
  • Parameter name: Particle size distribution
  • Parameter unit: 1/cm³
  • Parameter description: Number concentration of SiO₂ aerosol particles as a function of mobility diameter.
  • Parameter name: Relative humidity with respect to ice (RHice)
  • Parameter unit: %
  • Parameter description: Supersaturation conditions at which ice nucleation events occurred.
  • Parameter name: Temperature
  • Parameter unit: K
  • Parameter description: Temperature in the SPIN chamber during experiments.
  • Parameter name: Activated fraction (AF)
  • Parameter unit: %
  • Parameter description: Fraction of aerosol particles that nucleated ice.
Data levels (meter, hectoPascal, degree, sigma pressure levels, other) in vertical direction(+/-) for example 1500 m or 850 hPa
  • Level: Laboratory / controlled chamber
Resolution
1
Resolution unit
K (temperature binning)
Supplemental information
These datasets accompany the manuscript Homogeneous ice nucleation in adsorbed water films: a theoretical approach (Laaksonen et al., 2025). The data files include experimental silica adsorption and ice nucleation measurements used in Section 3 (Experimental section) and in the analysis corresponding to Figure 9. The code used for theoretical calculations is openly available at https://github.com/Golnaz-roudsari/GINCUP
Topic category
environment

Temporal Coverage

Ranges:

Start date: 2023-01-01
End date: 2024-12-01