windDirection as WeatherDataTypeValue
Wind direction is crucial to calculate Heat Transfer Coefficients for each surface and is normally contained in weather files for Building Performance Simulations. However, this parameter is not part of the Enumeration WeatherDataTypeValue.
In my opinion, the arguments against a soilTemperature parameter (see #154) do not apply in this case, as the wind direction is a basic parameter in weather stations and does not need a specific model.
I would then propose to extend the Enumeration WeatherDataTypeValue with a new item windDirection.