VALERIA WINTER
Astronomical Observatory, Bucharest
(Abstract)
Starting from the similarity of the informational system (source-channel-reception)
and actinometric system (sun-atmosphere-radiometer at the ground) and using
the concept of informational entropy, the author succeeded in setting the observation
data into a mathematical model allowing for precise analyses and interpretations.
Thus, the author was able to compute the virtual perturbations of the direct
solar radiation intensity intercepted at the ground.
The atmospheric turbidity was studied using both classical and informational
methods, to analyse the observation data obtained by simultaneous comparative
measurements carried out at two functional distinct points, placed in three
different areas: industrial city, mountain region, sea shore.
It was found that the new algorithm permits to carry out a fast rigorous quantitative
analysis and, at the same time, to determine precisely the value of each perturbing
factor action.
In this way, the causes generating the fluctuations of the direct solar radiation
intensity were pointed out quite clearly.