November 2013

1975

2012

The 2013 WMO greenhouse gas bulleting shows that there is no let up in the unprecedented rate of heat being added to the climate system - by increasing emissions of long lasting cumulative GHGs to the atmosphere.

If this is not stopped it can only lead to total planetary catastrophe.

THE RAPID TREND TO PLANETARY CATASTROPHE

Executive summary The latest analysis of observations from the WMO Global Atmosphere Watch (GAW) Programme shows that the globally carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) reached new highs in 2012, with CO2 at 393.1 ppm, CH4 at 1819 ppb and N2O at 325. ppb. These values constitute, respectively, 141%, 260% and 120% of pre-industrial (before 1750) levels. The atmospheric increase of CO2 from 2011 to 2012 is higher than the average growth rate over the past 10 years. For N2O the increase from 2011 to 2012 is larger than the average growth rate over the past 10 years. Atmospheric CH4 continued to increase at a rate similar to the one observed over the past 4 years.

WMO Greenhouse Gas Bulletin Nov 2013

Atmospheric GHG concentrations to 2012 WMO GHG Bulletin Nov 2013

CO2 Carbon dioxide

CH4 methane

N2O nitrous oxide

Atmospheric GHG concentrations WMO GHG Budget Nov 2013

Methane concentration increase

Methane emissions increase

Monthly increase

Post 2007 renewed sustained atmospheric methane increase Is due to feedback emissions from NH and SH wetland peat.

Sulfa hexafluoride CF6

After remaining nearly constant from 1999 to 2006, atmospheric CH4 began increasing again in 2007.

Methane‘s global warming effect is 80 times CO2 over a 20 year period

Nitrous oxide’s global warming effect is 289 times CO2 over a 20 year period

Sulfa hexafluoride’s global warming effect is 16,000 times CO2 over a 20 year period

2012 level

393ppm

1819 ppb

325 ppb

800,000 year

maximum

300 ppm 800 ppb 315 ppb

GHG heating index (WMO 2013)

CO2 heating index to 2012 (NOAA 2013)

Total climate system

heat content

Constant rate of heat being added to the climate system The National Oceanic and Atmospheric Administration (NOAA) Annual Greenhouse Gas Index shows that from 1990 to 2012 radiative forcing by long-lived greenhouse gases increased by 32%, with CO2 accounting for about 80% of this increase.

WMO GHG bulletin November 2013

32% increase In 22 yrs

1990

CO2 carbon dioxide

CH4 methane

N2O nitrous oxide

CFC’s

GHG heating index 2013