Diurnal Weather Averages

Note: To use this feature, you must sign in to Autodesk online services by clicking ServicesServices Sign In, and entering the User ID and password associated with your Autodesk account.

When reviewing an GUID-2043E09F-40E5-4155-AE28-134F62E54F54.htm#WS73099CC142F487552C60378B128B24194AD655E in the Results and Compare dialog, this chart tracks annual averages for temperature and solar radiation. The y-axis on the left is the temperature, and the y-axis on the right is the solar radiation in BTUs per hour per area.

Parameter Description
Temperature - Dry Bulb Daily averages of dry-bulb temperature for the entire year.
Temperature - Wet Bulb Daily averages of wet-bulb temperature for the entire year.
Diffuse Solar The portion of solar radiation that is scattered downward in the atmosphere.

On clear days, diffuse radiation is about 10% of the total solar radiation reaching the earth's surface. On extremely overcast days, the portion of diffuse radiation may be close to 100%.

Direct Solar The component of solar radiation reaching the earth's surface from the direction of the sun that has not been refracted, reflected, or scattered.