|
<< Click to Display Table of Contents >> WRDC Data |
  
|
|
<< Click to Display Table of Contents >> WRDC Data |
|
(Go directly to Importing WRDC Data)
World Radiation Data Center provides monthly global radiation data for 1195 ground sites from a 30-year (1964 - 1993) data set. Unfortunately this database does not include temperature values, which should be obtained by another mean (for example a near similar site from the Meteonorm values).
The WRDC database is maintained for the World Meteorological Organization (WMO) by the Russian Federal Service for Hydrometeorology and Environmental Monitoring in St. Petersburg. The basic data are available as daily irradiation values (or eventually hourly) in a special unpractical format not readily readable in PVsyst ( http://wrdc-mgo.nrel.gov/ ).
You can find a list of available sites, with their geographical coordinates, on the NREL web site http://wrdc-mgo.nrel.gov/html/sites.html. But several of these sites hold only partial data (sometimes only a few months or even no irradiance at all).
The NASA and NREL provide an interface for getting either daily values for given "real" months (not useful here), or monthly averages over the whole available measurements of the concerned site.