I went to his biography on his web site to learn his scientific qualifications and it says,
Last time I checked, entropy and albedo (topics vital to understanding heat transfer) were not front and center in a bachelor of arts degree and a law degree. There is at least one university in Massachusetts that offers a degree in meteorology: The Massachusetts Institute of Technology. On the faculty is Dr. Kerry Emanuel, a responsible pro-GW scientist, and Dr. Richard Lindzen, a responsible GW skeptic. Before he makes another ridiculous statement, I suggest Rep. Markey learn some basic meteorology then listen to both Emanuel and Lindzen. That will allow him actually add to the discussion rather than making ridiculous statements that pertain to 45% of Americans.