Radiation factors and evidentiary basis of climate change

We consider the evidentiary basis and problematic issues of results’ interpretation of investigations into climate change, which are not in line with the theory of their anthropogenic origin. Using data on variations in the area and brightness of active solar formations and on aerosol concentration of natural (volcanic) and anthropogenic origin and GHG, the indices have been developed to characterize the impact of the said outer factors on climate over the period from 1881 to 2010. With the use of models of multiple regressions, the determination values of temperature changes in various space-time scales have been obtained due to the proposed radiation indices. The radiation indices totally determine about 70 % of the temperature variance of the Earth and Northern hemisphere.