public static double ExtraTerrestrialRadiation(ILocation position, DateTime date)
{
double latitude = Astronomy.BoundedLatitude(position);
double dayAngle = Astronomy.DayAngle(date);
int dayOfYear = Astronomy.DayOfYear(date);
double solarDistanceCorrection = Astronomy.SolarDistanceCorrection(dayAngle);
double solarDeclination = Astronomy.SolarDeclination(dayOfYear);
double daylightTimeFactor = Astronomy.DaylightTimeFactor(latitude, solarDeclination);
return(Astronomy.ExtraTerrestrialRadiation(latitude, solarDistanceCorrection, solarDeclination, daylightTimeFactor));
}
public static double DayLength(ILocation position, DateTime date)
{
return(Astronomy.DayLength(Astronomy.DaylightTimeFactor(position, date)));
}
public static double DaylightTimeFactor(ILocation position, DateTime date)
{
return(Astronomy.DaylightTimeFactor(Astronomy.BoundedLatitude(position), Astronomy.SolarDeclination(date)));
}
public static double SolarDistanceCorrection(DateTime date)
{
return(Astronomy.SolarDistanceCorrection(Astronomy.DayAngle(date)));
}
public static double SolarElevation(ILocation position, DateTime date, double hour)
{
return(Astronomy.SolarElevation(Astronomy.BoundedLatitude(position), hour, Astronomy.SolarDeclination(Astronomy.DayOfYear(date))));
}
private static double SolarDeclination(DateTime date)
{
return(Astronomy.SolarDeclination(Astronomy.DayOfYear(date)));
}
public static double DayAngle(DateTime date)
{
return((double)(Astronomy.DayOfYear(date) * 2) * Math.PI / 365.0);
}
public static double RelativeSunshineFraction(ILocation position, DateTime date)
{
return(Astronomy.RelativeSunshineFraction(Astronomy.DaylightTimeFactor(position, date)));
}
public static double ShortestDayLength(ILocation location)
{
DateTime date = location.Latitude < 0.0 ? new DateTime(1999, 6, 21) : new DateTime(1999, 12, 21);
return(Astronomy.DayLength(location, date));
}
