Geomagnetism and Aeronomy

, Volume 50, Issue 3, pp 383–392

Reconstruction of the Earth’s surface temperature based on data of deep boreholes, global warming in the last millennium, and long-term solar cyclicity. Part 1. Experimental data

  • V. A. Dergachev
  • O. M. Raspopov

DOI: 10.1134/S0016793210030138

Cite this article as:
Dergachev, V.A. & Raspopov, O.M. Geomagn. Aeron. (2010) 50: 383. doi:10.1134/S0016793210030138


The most reliable pattern of climate changes is obtained using data of instrumental observations at the network of meteorological stations. However, the series of such data have short timescales (about 150 years). Indirect data from natural archives make it possible to judge specific features of climate changes in the more distant past. In contrast to indirect methods, when data are related to temperature through statistical correlations with air temperature, the borehole geothermal method makes it possible to directly determine the surface air temperature. The reconstructions of the temperature obtained using different indirect data for the Northern Hemisphere have been compared with the surface air temperature reconstructions based on the data of borehole thermometry and solar activity variations, and the possibilities of using the method in order to reconstruct long-term trends in climate changes have been indicated.

Copyright information

© Pleiades Publishing, Ltd. 2010

Authors and Affiliations

  • V. A. Dergachev
    • 1
  • O. M. Raspopov
    • 2
  1. 1.Ioffe Physical-Technical InstituteRussian Academy of SciencesSt. PetersburgRussia
  2. 2.Pushkov Institute of Terrestrial Magnetism, Ionosphere, and Radiowave Propagation, St. Petersburg BranchRussian Academy of SciencesSt. PetersburgRussia