Sonic wind component v
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)
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Additional Information
| Field | Value |
|---|---|
| Data last updated | June 15, 2021 |
| Metadata last updated | December 16, 2025 |
| Created | June 15, 2021 |
| Format | SERVICE |
| Identifier (Permalink) | snow-drift-station-3d-ultrasonic.a485c9f7-72e0-474c-9bc8-3d9aea695a30 |
| Issued date | November 5, 2019 |
| Modified date | November 5, 2019 |
| Languages | English |
| Access URL | https://www.envidat.ch/dataset/snow-drift-station-3d-ultrasonic/resource/a485c9f7-72e0-474c-9bc8-3d9aea695a30 |
| License (Terms of use) | Non-commercial Allowed / Commercial Allowed / Reference Required |
| Format | SERVICE |
| Coverage | - |
| Documentation | - |
| Access service | - |
| Temporal Resolution | - |
| Byte size | 513,827,192 |
| Datastore active | False |
| Datastore contains all records of source file | False |
| Display name | Sonic wind component v |
| Has views | False |
| Id | cc57d674-3612-4d08-8902-dcfebc0f743d |
| Identifier | snow-drift-station-3d-ultrasonic.a485c9f7-72e0-474c-9bc8-3d9aea695a30 |
| Issued | 2019-11-05T14:40:47+00:00 |
| Language | ['en'] |
| License | https://opendata.swiss/terms-of-use#terms_by |
| Modified | 2019-11-05T14:40:46+00:00 |
| Package id | 58a12251-b8e1-4798-8559-c46ae93e2bc5 |
| Position | 1 |
| Rights | https://opendata.swiss/terms-of-use#terms_by |
| State | active |
| Title | Sonic wind component v |
| Uri | https://www.envidat.ch/dataset/snow-drift-station-3d-ultrasonic/resource/a485c9f7-72e0-474c-9bc8-3d9aea695a30 |