Updated solar and weather data for the previous day, month, or year at all of your sites delivered on an ongoing basis for easy integration with your existing performance monitoring systems.
Available variables include: GHI, DNI, DIF, temperature, wind speed, relative humidity, accumulated precipitation, and a flag for daily snow.
- Long-term time series from Vaisala’s archive for benchmarking a site
- TMY data for added context
- API delivery
Unless optional features are requested, solar resource information is delivered for each location via a data file in an easily integrated CSV file format either via FTP or API.
Vaisala's 3TIER Services produced the first global solar irradiance map and time series dataset at roughly three times the resolution of previous U.S. solar datasets and at thirty times the resolution of global datasets available from NASA and continuously updated. Based on almost two decades of satellite imagery and cutting-edge technology, our uniform methodology is supported by a large scientific and research community.
The dataset is based on actual, quarter- or half-hourly, high-resolution visible satellite imagery observations via the broadband visible wavelength channel at a 2 arc minute resolution. These data have been processed to hourly GHI, DNI, and DIF values. Vaisala processes the satellite images based on a combination of in-house research and algorithms published in peer-reviewed scientific literature. These algorithms contain parameters and coefficients that are based on empirical fits to observational data. Weather variables are gathered from the ECMWF forecasting grids available globally.
|Western Hemisphere||GOES 8 - 13||January 1997 – last month|
|South Asia & Middle East||Meteosat 5, Meteosat 7||January 1999 – last month|
|East Asia & Oceania||GMS 5, GOES 9, MTSAT 1-2||December 1998 – last month|
|Europe & Africa||Meteosat 7, Meteosat 9||July 1998 – last month|
If you are unfamiliar with the technical terminology on this page, please visit our Glossary for more information.