The WMO data, meanwhile, confirms that atmospheric concentrations of the three gases principally responsible for the man-made component of the greenhouse effect - carbon dioxide, methane, and nitrous oxide - all rose during 2009.

BBC: Modest hopes for climate summit, as gas levels rise

The greenhouse gases surveyed include not only carbon dioxide but also methane (CH4), nitrous oxide (N2O), ozone (O3), and fluoride-containing gases that contribute to climate change.

FORBES: EPA Greenhouse Gas Inventory Shows 6 Percent Drop In CO2