This video draws on three studies (below) investigating how the changing ratio of carbon C-13/C-12 isotopes in the atmosphere since the beginning of industrialization correlates to the dramatic rise in CO2 concentration in the earth's atmosphere:
"Natural and anthropogenic changes in atmospheric CO2 over the last 1000 years from air in Antarctic ice and firn" D. M. Etheridge, et al., Journal of Geophysical Research, Volume. 101, No. D2, Pages 4115-4128, Februrary 20, 1996 [ Ссылка ]
"A 1000-year high precision record of δ13C in atmospheric CO2" R. J. Francey, et al., Tellus B: Chemical and Physical Meteorology, Volume 51B, 170–193, 1999 [ Ссылка ]
"Long-term variability in the global carbon cycle inferred from a high-precision CO2 and δ13C ice-core record" C. M. Trudinger, et al., Tellus B: Chemical and Physical Meteorology, Volume 51, 233-248, 1999 - Issue 2 [ Ссылка ]
