SOLAR RADIATION VARIABILITY AND THE OBSERVED TREND IN TEMPERATURE IN CLUJ-NAPOCA FROM 2004 TO 2007
Pages 88-91
Sandu-Valer TAHª, Dumitru RISTOI
Abstract
Variations in solar activity, at least as observed in numbers of sunspots, have been apparent since ancient times but to what extent solar variability may affect global climate has been far more controversial. The subject had been in and out of fashion, with connections between the Sun and climate intermittently proposed and dismissed, for at least two centuries until the early 1990s when a number of factors combined to again bring it to the forefront of scientific research. The main driving force was the international push to understand, and attribute causes to, apparent global warming. The need to distinguish between natural and anthropogenic causes of climate change led meteorologists, even those skeptical of solar-climate links, to accept that an objective analysis of the Sun's role was required. This study supposed to be an analysis of correlation between solar variations and temperature in Cluj-Napoca. Period of the observed trend in temperature in Cluj-Napoca was recorded between October 2004 and October 2007.