I’ve often said my email is like a fire hose. Here’s an example of something that got lost in the stream and I didn’t find it until last night while looking for another email.
Zeke Hausfather writes (In August 2012):
We have a new memo through Berkeley Earth that attempts to discern the causes of recent declines in U.S. CO2 emissions. The switch from coal to gas is the single largest factor, though others are important as well.
Some of the inspiration for the research came from a post you did last year: http://wattsupwiththat.com/2012/07/02/us-co2-emissions-may-drop-to-1990-levels-this-year/
The memo is available here: http://static.berkeleyearth.org/memos/explaining-declines-in-us-carbon.pdf
I’m also attaching the summary figure. The black portion represents actual emissions, with each “wedge” showing how much additional emissions would have occurred without the associated factor.