Warmest 12-Month Period Recorded In US
First time accepted submitter seanzig writes "Dr. Jeff Masters of Weather Underground provides a good overview of the State of the Climate Report from NOAA's National Climatic Data Center (NCDC). May 2011 through Apr. 2012 broke the previous record (Nov. 1999 — Oct. 2000). A number of other interesting records (e.g., warmest March on record) and stats emerged. It just presents the data and does not surmise anything about the causes or what should be done about it."
Let me fill in the blanks for you. It's getting warmer because of anthropogenic carbon emissions. And no matter what you think should be done about it, nothing is going to be done about it because people are not going to agree on a common course of action.
So, better get used to it: it's going to get a lot warmer. But why that may be unpleasant and costly for some, it's not going to be the end of civilization.
"Well, I think there's little disagreement that a "large" fraction is human caused, although obviously some small fraction is natural variation."
I don't know whether this is disingenuous or you just don't understand.
The whole reason there even exists controversy about this in the first place, is that the signal is very small in relation to the noise: any human-caused differences are so small in relation to the natural variations that it has been nearly impossible to detect (if, indeed, it has actually been detected).
"some small fraction is natural..." is not the real situation at all. The problem is the opposite: the vast majority of it is natural. Any scientist, even the staunchest AGW supporter, will admit that if he/she has any pretension to honesty at all.