How to calculate the hourly wind direction: Difference between revisions
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The [[Wind_direction_( | The [[Wind_direction_(Heat Stress Overlay)|hourly wind direction]] from the [[KNMI weather data]] table column ''DD'' is presented in degrees and oriented towards the north, which means we can use it directly. | ||
[[File:Tutorial_hourly_wind_direction_(Heat_Overlay).png]] | [[File:Tutorial_hourly_wind_direction_(Heat_Overlay).png]] | ||
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* The values at each hour regard the measurement over the preceding hour up to that time. To obtain the value for 12:00 UTC, the values at 12:00 UTC must be used. | * The values at each hour regard the measurement over the preceding hour up to that time. To obtain the value for 12:00 UTC, the values at 12:00 UTC must be used. | ||
|seealso= | |seealso= | ||
* [[Wind direction (Heat Overlay)]] | * [[Wind direction (Heat Stress Overlay)]] | ||
* [[KNMI weather data]] | * [[KNMI weather data]] | ||
}} | }} | ||
[[Category:How-to's]] | [[Category:How-to's]] | ||
Latest revision as of 12:27, 13 April 2026
The hourly wind direction from the KNMI weather data table column DD is presented in degrees and oriented towards the north, which means we can use it directly.
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| Column | Name | Unit | Dutch Description |
|---|---|---|---|
| 2/B | YYYYMMDD | Date | datum (YYYY=jaar,MM=maand,DD=dag) |
| 3/C | HH | Hour | tijd (HH=uur, UT.12 UT=13 MET, 14 MEZT. Uurvak 05 loopt van 04.00 UT tot 5.00 UT |
| 4/D | DD | Degrees | Windrichting (in graden) gemiddeld over de laatste 10 minuten van het afgelopen uur (360=noord, 90=oost, 180=zuid, 270=west, 0=windstil 990=veranderlijk. Zie [1] |
Notes
- The values at each hour regard the measurement over the preceding hour up to that time. To obtain the value for 12:00 UTC, the values at 12:00 UTC must be used.