MatterHEX 2023 field campaign data and associated EULAG Large-Eddy Simulations

Description

Data of the MatterHEX (MatterHorn EXperiment) 2023 field campaign at the Matterhorn (Cervino, European Alps) conducted between 29 September and 16 October 2023 and the corresponding EULAG Large-Eddy Simulations (Prusa et al., 2008) to study flow past Matterhorn and the formation of banner clouds. A complete overview of the campaign strategy, the deployed instruments, and the observational timeline is given in Hoch et al. (2025). In additon, Hoch et al. (2025) summarizes the main findings of MatterHEX and investigates how frequently flow conditions around the Matterhorn are conducive to banner cloud occurrence. A detailed comparison of the observations with EULAG Large-Eddy Simulations can be found in Thomas et al. (2025).

Repository structure

The repository includes data from a 1. Halo Photonics Streamline XR Doppler lidar located near Furggsee (Zermatt), 2. Vaisala Windcube v2.1 lidar near Furggsee (Zermatt), 3. Cambell Scientific CSAT3 Sonic Anemometer near Furggsee (Zermatt), 4. GRAW DF-09 Radiosondes at Schönbielhütte SAC, 5. Webcam near Furggsee (Zermatt), 6. Webcam at upper Hirli cable car station (Zermatt), 7. & 8. first and last time step fields of the EULAG Large-Eddy Simulations, and 9. & 10. one-hour time-averaged fields of the EULAG Large-Eddy Simulations.

Further information on the data records can be found in the corresponding README files.

Raw data (HPL-file format) from a Halo Photonics Streamline XR Doppler lidar located near Furggsee (Zermatt) (29 September to 16 October 2023)

Lidar_HPS_FS_YYYYMMDD.zip, e.g. Lidar_HPS_FS_20231003.zip:

README_Lidar_HPS_FS.txt

Raw data (NETCDF-file format) from a Vaisala Windcube v2.1 lidar near Furggsee (Zermatt) (26 September to 16 October 2023)

Lidar_VW_FS_2023_0926_1016.zip:

README_Lidar_VW_FS.txt

Raw and processed data (NETCDF-file format) from a Cambell Scientific CSAT3 Sonic Anemometer near Furggsee (Zermatt) (2 October to 16 October 2023)

Sonic_FS_2023_1002_1016.zip:

Sonic_FS_1002.zip ... Sonic_FS_1016.zip

README_Sonic_FS.txt

Raw and processed data (NETCDF-file format) from GRAW DF-09 Radiosondes at Schönbielhütte SAC (28 September to 16 October 2023)

Raso_SH_2023_0928_1016.zip:

Raso_SH_YYYMMDD_HHMMSS.nc, e.g. RASO_SH_20231003_135802.nc

README_Raso_SH.txt

Images (JPG-file format) from a Microseven M7B5MP-PSAA Webcam near Furggsee (Zermatt) (29 September to 16 October 2023)

Webcam_FS_2023_0929_1016.zip:

Webcam_FS_0929.zip ... Webcam_FS_1016.zip

README_Webcam_FS.txt

Images (JPG-file format) from a Microseven M7B5MP-PSAA Webcam at upper Hirli cable car station (Zermatt) (29 September to 16 October 2023)

Webcam_H_2023_0929_1015.zip:

Webcam_H_0929.zip ... Webcam_H_1015.zip

README_Webcam_H.txt

First and last time step fields (NETCDF-file format) of EULAG Large-Eddy Simulation based on ambient flow conditions derived from radiosonde launched at 1736 UTC (1936 CEST) on 29 September 2023 (September Case) and from radiosonde launched at 1358 UTC (1558 CEST) on 3 October 2023 (October Case):

EULAG_tinst_20230929_1736.zip

MatterHEX23_20230929_1736_EULAG_wdir308_tav.nc

README_EULAG_tav_20230929_1736.txt

First and last time step fields (NETCDF-file format) of EULAG Large-Eddy Simulation based on ambient flow conditions derived from radiosonde launched at 1358 UTC (1558 CEST) on 3 October 2023 (October Case):

EULAG_tinst_20231003_1358.zip

MatterHEX23_20231003_1358_EULAG_wdir270_tinst.nc

README_EULAG_tinst_20231003_1358.txt

One-hour time-averaged fields (NETCDF-file format) of EULAG Large-Eddy Simulations based on ambient flow conditions derived from radiosonde launched at 1736 UTC (1936 CEST) on 29 September 2023 (September Case). The simulation is rotated back.

EULAG_tav_20230929_1736.zip

MatterHEX23_20230929_1736_EULAG_wdir308_tav.nc

README_EULAG_tav_20230929_1736.txt

One-hour time-averaged fields (NETCDF-file format) of EULAG Large-Eddy Simulations based on ambient flow conditions derived from radiosonde launched at 1358 UTC (1558 CEST) on 3 October 2023 (October Case):

EULAG_tav_20230929_1736.zip

MatterHEX23_20231003_1358_EULAG_wdir270_tav.nc

README_EULAG_tav_20231003_1358.txt