Sonic wind component w
The data contains values for w 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 | August 14, 2024 |
| Metadata last updated | December 22, 2025 |
| Created | August 14, 2024 |
| Format | SERVICE |
| Identifier (Permalink) | snow-drift-station-3d-ultrasonic.a0d480eb-e00a-4508-9d76-16da99c61b61 |
| 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/a0d480eb-e00a-4508-9d76-16da99c61b61 |
| 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 w |
| Has views | False |
| Id | 4a52328a-c186-426e-9c55-bbf912e0036e |
| Identifier | snow-drift-station-3d-ultrasonic.a0d480eb-e00a-4508-9d76-16da99c61b61 |
| Issued | 2019-11-05T14:43:20+00:00 |
| Language | ['en'] |
| License | https://opendata.swiss/terms-of-use#terms_by |
| Modified | 2019-11-05T14:43:20+00:00 |
| Package id | 7dcb4836-e477-4e4e-b8e4-27980d9abac3 |
| Position | 2 |
| Rights | https://opendata.swiss/terms-of-use#terms_by |
| State | active |
| Title | Sonic wind component w |
| Uri | https://www.envidat.ch/dataset/snow-drift-station-3d-ultrasonic/resource/a0d480eb-e00a-4508-9d76-16da99c61b61 |