Vaisala Energy Support
What do the Annual Mean Irradiance Tools provide?
For your selected location, these tools show the annual average (mean) irradiance value (GHI, DNI, DIF) including a +/- (plus or minus) range. This tool directly incorporates a confidence interval, providing a range of expected values and a more realistic assessment. This value reflects the general terrain conditions in your area and is based on a combination of computer simulations and direct satellite observations.
You have the option of seeing the irradiance values in units of kWh/m2/day (kilowatt-hours per square meter per day) or W/m2 (Watts per meter squared). To learn how to change your account settings click here.
More Solar Online Tools Questions
- How do I enter a location?
- What's the latest month available in the solar time series tool?
- What is the Data Shown in the Solar Time Series Viewer?
- What updates were applied to the datasets in November 2019?
- Which weather data source should I pick?
- 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?
- What is Diffuse Horizontal Irradiance?
- 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?
- 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.