2011-02-04 21:17:04Relative effect of different Greenhouse gases
perseus

owlsmoor@googlemail...
78.143.222.231
Is anyone aware of the relative effect of each greenhouse gas calculated using the well publicised global warming potentials rather than global forcing? 

I think these are based on global forcing coefficients unless I am mistaken? If so they are looking into the past rather than the future.



Global Greenhouse Gas Data | Climate Change - Greenhouse Gas Emissions | U.S. EPA
2011-02-05 21:10:10
perseus

owlsmoor@googlemail...
78.143.202.119

OK does anyone know a source for raw emissions of methane, N20 etc rather than their CO2 equivalents?  It should be just a matter of weighting these by the GWP.

I thought this would be a useful representation since it would illustrate which GHGs are the most important which the graph above doesn't.

2011-02-05 21:56:00
Rob Painting
Rob
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118.93.230.64
Have you checked out CDIAC?.
2011-02-06 01:40:58
perseus

owlsmoor@googlemail...
78.143.202.119

I can't see anything suitable there, mainly atmospheric concentrations. I thought I found something on CAIT but same problem, always equivalents.   In principle I could work back, but better to have the original data.

Surely the proportion emitted weighted  by global warming potential rather than forcing would be essential for policy making? I'm sure I've seen a pie chart with much different proportions.

 

2011-02-06 02:57:12
nealjking

nealjking@gmail...
84.151.44.10

There was a paper by Gavin Schmidt on this issue:

http://pubs.giss.nasa.gov/cgi-bin/abstract.cgi?id=sc05400j

Check it out.

 

2011-02-06 03:06:31
perseus

owlsmoor@googlemail...
78.143.202.119

I may be getting CO2eq and CO2e confused, the first is based on potentials the second on radiative forcing and the pie chart was based on CO2eq after all! 

Carbon dioxide equivalent

I will examine the link anyway thanks

2011-02-06 05:12:46Science of Doom
John Hartz
John Hartz
john.hartz@hotmail...
98.122.68.19

The Science of Doom website has an extremely detailed, four part series on “Understanding Atmospheric Radiation and the ‘Greenhouse’ Effect.” You will likely find the answers to your questions embedded in it.

http://scienceofdoom.com/