Carbon dioxide: the fitted model

The CO2 model (fit/CO2): two effective electronic oscillators fitted to Old, Gentili & Peck (480-1600 nm, level free), the visible data, the 633 and 1542 nm metrology, Hohm’s 325-633 nm dispersion, Shelton’s N2/CO2 ratios with Marchetti’s CO2-laser values as validators, with HITRAN’s vibrational bands below 7000 cm^-1 fixed (reduced chi-squared 4.01; TC-797). Shown over the model’s main range, 250 nm to 1.4 um; seven additional qualified infrared intervals extend to 8.941 um, with gaps listed in The gas models.

from _helpers import fit_overview

fig = fit_overview("CO2", xlim=(250e-9, 1.4e-6))