b003:     ccsm1 control experiment. see http://www.cgd.ucar.edu/csm/experiments/b003.html.
              Results shown here use the 5 year mean between 95th and 99th model years.

    b006:     ccsm1 transient experiment. see http://www.cgd.ucar.edu/csm/experiments/b006.html.
              Results shown here use the 5 year mean between 95th and 99th model years, the first five years
	      after the doubling CO2 is achieved in the transient 1% increase run.