3 ms·

- since CO2 has a logarithmic effect on warming Where does this affirmation come from ?

• sanxiyn 10y ago
  Eh, this is actually well known. "The existing concentrations of a particular gas dictate the effect that additional molecules of that gas can have. For gases such as the halocarbons, where the naturally occurring concentrations are zero or very small, their forcing is close to linear in concentration for present-day concentrations. Gases such as methane and nitrous oxide are present in such quantities that significant absorption is already occurring and it is found that their forcing is approximately proportional to the square root of their concentration. (snip) For carbon dioxide, as has already been mentioned, parts of the spectrum are already so opaque that additional molecules of carbon dioxide are even less effective, the forcing is found to be logarithmic in concentration." From page 49 of http://ipcc.ch/ipccreports/far/wg_I/ipcc_far_wg_I_chapter_02.pdf http://ipcc.ch/ipccreports/far/wg_I/ipcc_far_wg_I_chapter_02...
  • Oletros 10y ago
    The question should be why the OP made this observation regarding the other claims he made