3TIER Support
What is Diffuse Horizontal Irradiance?
Diffuse Horizontal Irradiance is the amount of radiation received per unit area by a surface (not subject to any shade or shadow) that does not arrive on a direct path from the sun, but has been scattered by molecules and particles in the atmosphere and comes equally from all directions.
If you are interested in more detailed information on the DIF values for any location worldwide, please see our Solar DIF GIS Data Layer, Solar Time-series, and FullView Solar Site Climate Variability Analysis products.
More Solar Prospecting Tools Questions
- How do I enter a location?
- What do the Annual Mean Irradiance Tools provide?
- How do I interpret the graphs provided by the Monthly Mean Irradiance Tools?
- What solar values are shown on the map?
- Why do we show a +/- next to the annual values?
- What is Global Horizontal Irradiance?
- How can I compare sites side-by-side?
- What is Direct Normal Irradiance?
- How do I change locations for individual tools?
- Which Internet browsers does the 3TIER website support?
- Why does the map disappear?
- What are the units of irradiance?
- What affects solar radiation at a given site?
- How much area is covered by the Solar Prospecting Tools?
- How accurate are the Solar Prospecting Tools?
- What data has been created?
- How was the data behind your map created?
- How do I convert the 3TIER values to peak sun hours?
- Why does the data not match my observations?
- Is 3TIER data more accurate than NREL?
- What were 3TIER's solar data validation procedures?
If you didn't find what you were looking for, please contact 3TIER Support for additional assistance.
