How to calculate the daily average wind speed: Difference between revisions

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===Daily average wind speed===
The [[Daily_avg_wind_speed_(Heat_Overlay)|daily average wind speed]] has to be measured from 8 UTC current day to 7 UTC the next day, according to the {{Heat_DPRA_Report}}. The wind speed is also measured in 0.1 meters, so the values from the [[KNMI weather data]] column ''FH'' have to be divided by 10 to get to a value in m/s.
The [[Daily_avg_wind_speed_(Heat_Overlay)|daily average wind speed]] has to be measured from 8 UTC current day to 7 UTC the next day, according to the {{Template:Heat_DPRA_Report}}. The wind speed is also measured in 0.1 meters, so the values has to be divided by 10 to get to a value in m/s.


[[File:Tutorial_daily_wind_speed_table_(Heat_Overlay).png]]
[[File:Tutorial_daily_wind_speed_table_(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 KNIM historical weather data table and how to download this information please go to the [[Tutorial dutch model attributes (Heat_Overlay)|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 august 2nd, the values at 8am of august 2nd, up to and including 7am on august 3rd 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=
* [[KNMI weather data]]
* [[Daily avg wind speed (Heat Overlay)]]
}}


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

Latest revision as of 08:23, 5 February 2024

The daily average wind speed has to be measured from 8 UTC current day to 7 UTC the next day, according to the DPRA Heat stress report. The wind speed is also measured in 0.1 meters, so the values from the KNMI weather data column FH have to be divided by 10 to get to a value in m/s.

Tutorial daily wind speed table (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

  • The values at each hour regard the measurement over the preceding hour up to that time. To obtain the value for august 2nd, the values at 8am of august 2nd, up to and including 7am on august 3rd must be used.
  • The wind speed (hourly, and 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.

See also

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