Solar activity, cosmic rays, and earth temperature reconstructions for the past two millennia. Part 1. Analysis of temperature reconstructions

The data on a change in the Earth's surface temperature during the time interval of the past 2000 years, which were obtained using the instrumental, historical, and indirect methods, were reviewed and analyzed. In addition, data on borehole termometry were analyzed, and it was shown that this method can be used to reconstruct long-term trends in climate change, which is among the main causes of differences in interpreting indirect data on long timescales (several hundred and thousand years).