IPCC list of greenhouse gases

Gases relevant to radiative forcing only (per IPCC documentation)

The following table has its sources in Chapter 2, p. 141, Table 2.1. of the IPCC Fourth Assessment Report, 2007.

Mole fractions: μmol/mol = ppm = parts per million (10⁶); nmol/mol = ppb = parts per billion (10⁹); pmol/mol = ppt = parts per trillion (10¹²).

The older data from 1998 has been left for reference.