DOI: 10.16904/envidat.645
title: Modeled and measured fluxes of latent and sensible heat and snow transport at S17 near Syowa in Antarctica

description: This dataset supports a related publication (Sigmund et al., 2025) and contains
- results of four **large-eddy simulations** (LES) coupled to a Lagrangian model (LM) for snow transport, aiming to reproduce field measurements, especially latent heat fluxes, at the S17 site near Syowa Station, East Antarctica, in conditions of drifting and blowing snow,
- references to the **source code** of the LES-LM model,
- the source code and results of a simple **one-dimensional (1D) model** inspired by the large-scale model CRYOWRF (Sharma et al., 2023), aiming to reproduce the LES-LM results,
- post-processed **measurements** shown in the figures of the related publication,
- **programming code** for post-processing and plotting the results.
The LES-LM simulations solve the Navier-Stokes equations for incompressible flows and advection-diffusion equations for air temperature and specific humidity in a domain of 19.2 x 18.32 x 18.32 m³. In these simulations, the airflow is driven by a prescribed large-scale pressure gradient. We assume that the air density is constant (1.18 kg/m³) and the snow particles have a spherical shape and a density of 918.4 kg/m³. Further methodological details are described in the related publication. The 1D model and post-processing code was created using the R software version 4.3.2 (R Core Team, 2024).
References
- Sharma, V., Gerber, F., & Lehning, M. (2023): Introducing CRYOWRF v1.0: multiscale atmospheric flow simulations with advanced snow cover modelling. Geosci. Model Dev. 16, 719–749. [https://doi.org/10.5194/gmd-16-719-2023](https://doi.org/10.5194/gmd-16-719-2023)
- Sigmund, A., Melo, D. B., Dujardin, J., Nishimura, K., & Lehning, M. (2025). Parameterizing snow sublimation in conditions of drifting and blowing snow. Journal of Advances in Modeling Earth Systems, 17, e2024MS004332. [https://doi.org/10.1029/2024MS004332](https://doi.org/10.1029/2024MS004332)
description: Resource Title: (a) Readme.pdf
 Size: 418202 bytes
 Format: .pdf
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.645/Readme.pdf
 Description: Meta data for the whole dataset including a link to the LES-LM source code.
description: Resource Title: (b) Data_of_figures.zip
 Size: 51098 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.645/Data_of_figures.zip
 Description: Folder containing the data (csv files) visualized in figures of the related publication. The filenames specify the respective figure(s). However, data shown in Figures S5 and S6 are included in data resource (d).
description: Resource Title: (c) LES-LM_code_settings.zip
 Size: 38912 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.645/LES-LM_code_settings.zip
 Description: Simulation-specific settings (part of the LES-LM source code).
description: Resource Title: (d) LES-LM_main_results.zip
 Size: 22963814 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.645/LES-LM_main_results.zip
 Description: Main results of the LES-LM simulations. We do not provide the complete raw output of the simulations because of the large amount of data. For example, the three-dimensional fields of wind velocity components, air temperature and specific humidity are only provided in horizontally averaged form.
description: Resource Title: (e) LES-LM_particles_case_1.Rdata
 Size: 1036936806 bytes
 Format: .Rdata
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.645/LES-LM_particles_case_1.Rdata
 Description: Properties of individual drifting and blowing snow particles in the LES-LM simulation of Case 1.
description: Resource Title: (f) LES-LM_particles_case_2.Rdata
 Size: 1288490189 bytes
 Format: .Rdata
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.645/LES-LM_particles_case_2.Rdata
 Description: Properties of individual drifting and blowing snow particles in the LES-LM simulation of Case 2.
description: Resource Title: (g) LES-LM_particles_case_3a.Rdata
 Size: 2147483648 bytes
 Format: .Rdata
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.645/LES-LM_particles_case_3a.Rdata
 Description: Properties of individual drifting and blowing snow particles in the LES-LM simulation of Case 3a.
description: Resource Title: (h) LES-LM_particles_case_3b.Rdata
 Size: 2040109466 bytes
 Format: .Rdata
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.645/LES-LM_particles_case_3b.Rdata
 Description: Properties of individual drifting and blowing snow particles in the LES-LM simulation of Case 3b.
description: Resource Title: (i) 1D_model_code.zip
 Size: 29082 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.645/1D_model_code.zip
 Description: Source code of the 1D model (R scripts).
description: Resource Title: (j) Turbulence_measurements_case_1.txt
 Size: 1258291 bytes
 Format: .txt
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.645/Turbulence_measurements_case_1.txt
 Description: Post-processed high-frequency measurements used to plot turbulence cospectra (data underlying Figure S2 of the related publication). Further measurements are published in a related dataset (Sigmund et al., 2021).
description: Resource Title: (k) Postprocessing_code.zip
 Size: 417382 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.645/Postprocessing_code.zip
 Description: R scripts used to post-process the results of the LES-LM model and 1D model and produce the figures.