Huang, B.A. Baum, Y.X. Hu, G.W. Kattawar, M.I. Mishchenko, and Q. Fu, 2005: Scattering and
absorption property database for nonspherical ice particles in the near - through far - infrared spectral region.
The basic ingredients are easy to list: —
absorption / emission
properties (or spectroscopic parameters) of CO2 at atmospheric pressures, i.e. data presently available from HITRAN -
database combined with models of line broadening — observed
properties of the atmosphere where most important features include clouds and moisture content, but many other factors have some influence — computer model of the transmission of radiation along the lines of MODTRAN or GENLN2