How to calculate the daily average radiation: Difference between revisions
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The [[Daily_avg_radiation_(Heat_Overlay)|daily average radiation]] is measured for the hours the sun is up. It is up for discussion to take into account the first and last hours, because these hours often don't contribute fully to the average. | The [[Daily_avg_radiation_(Heat_Overlay)|daily average radiation]] is measured for the hours the sun is up. It is up for discussion to take into account the first and last hours, because these hours often don't contribute fully to the average. | ||
Similar to the hourly radiation, the radiation values have to be multiplied: | Similar to the hourly radiation, the radiation values from [[KNMI weather data]] column ''Q'' have to be multiplied: | ||
<math>radiation_{daily} = \frac{\sum^{m}_{t=n}Q_{t}}{m-n+1} \cdot 10000 / 3600 </math>, | <math>radiation_{daily} = \frac{\sum^{m}_{t=n}Q_{t}}{m-n+1} \cdot 10000 / 3600 </math>, | ||
Revision as of 15:21, 16 February 2023
The daily average radiation is measured for the hours the sun is up. It is up for discussion to take into account the first and last hours, because these hours often don't contribute fully to the average. Similar to the hourly radiation, the radiation values from KNMI weather data column Q have to be multiplied:
,
where:
- is the first full hour with sun radiation.
- is the last full hour with sun radiation.
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