- Dernière mise à jour
- 5 novembre 2019
- Conditions d'utilisation
-
- Organisation
- EnviDat: le portail de données environnementales
- Format
- SERVICE
Description
The data contains values for v direction of the wind in a sampling frequency of 20 Hz. Erroneour spikes were filterd in two steps.
- Define moving window uₓ = u(i-3:i+3)
- If u(i)-mean(uₓ) > 2*std(uₓ):u(i) = NaN
Frozen detectors resulted in continuous zero values (not filtered). The wind speed and direction were calculated as follows:
wind speed = sqrt(u² + v²) wind direction = 180° + (180° / PI)* arctan2 (-u, -v)
Informations complémentaires
- Identifier
- snow-drift-station-3d-ultrasonic.a485c9f7-72e0-474c-9bc8-3d9aea695a30
- Date de publication
- 5 novembre 2019
- Date de modification
- 5 novembre 2019
- Langues
- Anglais
- URL d'accès
- https://www.envidat.ch/dataset/snow-drift-station-3d-ultrasonic/resource/a485c9f7-72e0-474c-9bc8-3d9aea695a30
- Taille du fichier
- 490.0 MB
- Format
- SERVICE
- Documentation
-
