How to calculate the hourly wind speed: Difference between revisions

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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 wind speed ([[KNMI weather data#Hourly_wind_speed|hourly]], and [[KNMI weather data#Daily_average_wind_speed|daily average]]) can also be based on an other data source; ''Potentiele wind (UP)'': http://projects.knmi.nl/klimatologie/onderzoeksgegevens/potentiele_wind-sigma/. These values are often a few 0.1 m/s higher than the values from the historical KNMI weather data table.
* The wind speed ([[KNMI weather data#Hourly_wind_speed|hourly]], and [[KNMI weather data#Daily_average_wind_speed|daily average]]) can also be based on an other data source; ''Potentiele wind (UP)'': http://projects.knmi.nl/klimatologie/onderzoeksgegevens/potentiele_wind-sigma/. These values are often a few 0.1 m/s higher than the values from the historical KNMI weather data table.
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Latest revision as of 08:27, 5 February 2024

The hourly wind speed from the KNMI weather data table column FH has to be divided by 10, since it is defined in 0.1 m/s.

Tutorial hourly wind speed (Heat Overlay).png

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 http://www.knmi.nl/kennis-en-datacentrum/achtergrond/klimatologische-brochures-en-boeken
5/E FH 0.1 m/s Uurgemiddelde windsnelheid (in 0.1 m/s). Zie http://www.knmi.nl/kennis-en-datacentrum/achtergrond/klimatologische-brochures-en-boeken

Notes

See also