How to calculate the hourly wind speed: Difference between revisions

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===Hourly wind speed===
The [[Wind_speed_(Heat_Overlay)|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.
The [[Wind_speed_(Heat_Overlay)|hourly wind speed]] from the table has to be divided by 10, since it is defined in 0.1 m/s.


[[File:Tutorial_hourly_wind_speed_(Heat_Overlay).png]]
[[File:Tutorial_hourly_wind_speed_(Heat_Overlay).png]]


==Note==
{| class="wikitable"
The wind speed ([[Tutorial_dutch_model_attributes_(Heat_Overlay)#Hourly_wind_speed|hourly]], [[Tutorial_dutch_model_attributes_(Heat_Overlay)#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.
! 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''
|}


==Also see==
{{article end
For more information on the KNMI historical weather data table and how to download this information please go to the [[Tutorial dutch model attributes (Heat Overlay)]]
|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.
* 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.
|seealso=
* [[Wind speed (Heat Overlay)]]
* [[KNMI weather data]]
}}


{{Template:Heat_Module_buttons}}
[[Category:How-to's]]

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

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