'Norwegian Institute for Agricultural and Environmental Research' is the owner of a network of meteorological stations,
established in 1987. 45 of the stations are measuring global radiation, hourly values. These time series are to be used as
one of the input parameters for modelling UV-radiation. Also several other meteorological parameters of relevance for
modelling UV-radiation are measured in this station network and discussed below.
A discussion on quality of these data contains general considerations on the concept of quality, considerations on the
methods for making measurements at the specific series from a few sites as well as specific quality considerations on
several other available time series of meteorological parameters, like the albedo, precipitation, relative humidity of the
air, temperature of the air etc. from the sites.
Elements describing the sites are mentioned, like information on the horizon, the geographical coordinates etc.
The availability of independent time series of measurements of ozone, cloudiness, precipitation, content of aerosol and
vertical distributions of humidity to be used in models are also discussed.
Modelling UV-radiation at the ground is defined as a complex problem of data integration using data from different
sources. The main part of this paper contains discussion complex data integration.