He doesn't believe it's real or involves human activity.
http://www.discover.com/issues/sep-05/departments/discover-dialogue/Of course his prediction of the hurricane season of 2005 was off by the distance you can fling a frisbee over an expanse of floating bodies in a bayou experiencing 130 mph winds.
At the start of the 2005 hurricane season he predicted 15 named storms, 8 hurricanes and 4 major hurricanes with winds exceeding 110 mph.
http://www.usatoday.com/weather/hurricane/2005-05-31-Gray-hurricaneforecast_x.htmThe actual 2005 results were 27 named storms, 15 hurricanes, 7 category 3 or greater hurrincanes and 3 category 5 hurricanes.
Three of the 6 most intense hurricanes ever recorded occurred in 2005.
Natural variation.
Oh well, who's counting. After all Dr. Gray is
famous for his predictions. He's a celebrity, almost like Britney Spears.
Dr. Gray is so good at his predictive skills that he should go to work for the Department of Defense, in the "greeting us with roses" department.