  This paper deals about the presentation of a new software RUNEOLE used to
provide weather data in buildings physics. RUNEOLE associates three modules
leading to the description, the modelling and the generation of weather data.
The first module is dedicated to the description of each climatic variable
included in the database. Graphic representation is possible (with histograms
for example). Mathematical tools used to compare statistical distributions,
determine daily characteristic evolutions, find typical days, and the
correlations between the different climatic variables have been elaborated in
the second module. Artificial weather datafiles adapted to different simulation
codes are available at the issue of the third module. This tool can then be
used in HVAC system evaluation, or in the study of thermal comfort. The studied
buildings can then be tested under different thermal, aeraulic, and radiative
solicitations, leading to a best understanding of their behaviour for example
in humid climates.
