that's one more link than was provided in the op.
But I'll provide the study the author was probably basing the article on. It's called 'Cooling of Atmosphere Due to CO2 Emission'. It was conducted by G. V. Chilingar and L. F. Khilyuk of the Rudolf W. Gunnerman Energy and Environment Laboratory, University of
Southern California, Los Angeles, California, and O. G. Sorokhtin of the Institute of Oceanology of Russian Academy of Sciences
Cooling of Atmosphere Due to CO2 Emission – clothcap2 - My Telegraph
PS> You know, of course, that you can find people who swear that CO2 causes atmospheric warming .I'll bet they even have studies...
studies that were proven to be fraudulent that is.