on the website https://duramat.github.io/pv-terms/ , it lists the wind speed measurement height as 10 m. While this is generally true for standardized measurements it isn't always true. If I'm reading the documentation correctly, the NSRDB uses a height of 2m but PVGIS uses a proper 10m height. Then when people do their own measurements on actual PV systems this is usually done at a "module height" of 2 m. Where this becomes an issue is when you use a temperature model that may be based on a 2, 5 or 10m wind speed height. Typically the variation in wind speed with height is modeled as a power law. To accomodate this in PVDeg we define a variable "Wind_Height_m" and a power law factor "wind_factor" to make the speed adjustments for height. Then when meterological data is taken from a data set, we put in a meta data field for the wind speed height. When the calculations for wind speed are modified for the particular thermal model, the user can put in a custom wind factor or use the default of 0.33. Could you modify the definitions of variables to accomodate this?
on the website https://duramat.github.io/pv-terms/ , it lists the wind speed measurement height as 10 m. While this is generally true for standardized measurements it isn't always true. If I'm reading the documentation correctly, the NSRDB uses a height of 2m but PVGIS uses a proper 10m height. Then when people do their own measurements on actual PV systems this is usually done at a "module height" of 2 m. Where this becomes an issue is when you use a temperature model that may be based on a 2, 5 or 10m wind speed height. Typically the variation in wind speed with height is modeled as a power law. To accomodate this in PVDeg we define a variable "Wind_Height_m" and a power law factor "wind_factor" to make the speed adjustments for height. Then when meterological data is taken from a data set, we put in a meta data field for the wind speed height. When the calculations for wind speed are modified for the particular thermal model, the user can put in a custom wind factor or use the default of 0.33. Could you modify the definitions of variables to accomodate this?