Lets start with NASA global warming scientists. While they are not on grants, they are paid by the government for their work:
http://climate.nasa.gov/
Then you have the EPA, who are involved with GW and are also paid by the govt:
http://www.epa.gov/climatechange/
Then you have all the scientists who work for IPCC:
http://www.ipcc.ch/
Then you have all the scientists who work for the National Climatic Data Center:
http://en.wikipedia.org/wiki/National_Climatic_Data_Center
Then you have all the scientists who work for Climatic Research Unit:
http://en.wikipedia.org/wiki/Climatic_Research_Unit
And then you also have many university scientists/professors who work on grants like Michael Mann.
Some of these scientists work for the government and get paid a salary, and some make a living receiving grants from charity, UN or other governmental agencies