Geoffrey (Geoff) Jenkins is a climatologist and former head of climate change prediction at the Hadley Centre for Climate Prediction and Research, part of the Met Office. In answer to "What makes you believe the recent rise [in temperature] is due to human activity?" he said: : "Feeding in the different agents that cause climate change into our models – like greenhouse gases, output from the Sun, … Wikipedia
The definitive Wikipedia entry for Geoff Jenkins. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Geoff_Jenkins_%28climatologist%29
