20 October atmospheric GHG concentrations

Little change in concentrations over the past month. The feedback increase in atmospheric methane persists.

Atmospheric GHG levels 29 Sept 2012

Mauna Loa carbon dioxide and methane have changed little since last month.  Methane is still on a rising trend due to post 2007 feedback emissions from the warming planet. Nitrous oxide continues to rise.

More heat is being  added to the climate system at an unprecedented rate, which has accelerated over the past decade due to all three GHGs.

Arctic methane continues to rise due to feed back emissions.