Hourly Solar Radiation

The function estimates hourly solar radiation (W m^-2 hr^-1) as a function of daily global solar radiation (W m^-2 d^-1). Based on Tham et al. (2010) and Tham et al. (2011) .

diurnal_radiation_variation(doy, S, hour, lon, lat)

Arguments

doy

numeric the day of year.

S

numeric solar radiation (W m^-2 d^-1).

hour

numeric hour (0-24).

lon

numeric longitude (degrees).

lat

numeric latitude (degrees).

Value

numeric hourly solar radiation (W m^-2).

References

Tham Y, Muneer T, Davison B (2010). “Estimation of hourly averaged solar irradiation: evaluation of models.” Building Services Engingeering Research Technology, 31(1). doi:10.1177/0143624409350547 .

Tham Y, Muneer T, Davison B (2011). “Prediction of hourly solar radiation on horizontal and inclined surfaces for Muscat/Oman.” The Journal of Engineering Research, 8(2), 19-31. doi:10.24200/tjer.vol8iss2pp19-31 .

See also

Other microclimate functions: air_temp_profile_neutral(), air_temp_profile_segment(), air_temp_profile(), degree_days(), direct_solar_radiation(), diurnal_temp_variation_sineexp(), diurnal_temp_variation_sinesqrt(), diurnal_temp_variation_sine(), monthly_solar_radiation(), partition_solar_radiation(), proportion_diffuse_solar_radiation(), solar_radiation(), surface_roughness(), wind_speed_profile_neutral(), wind_speed_profile_segment()

Examples

diurnal_radiation_variation(doy    = 112, 
                            S = 8000, 
                            hour   = 12, 
                            lon    = -122.33, 
                            lat    = 47.61)
#> [1] 1006.89