Roy Spencer, meteorologist. Before becoming a Principal Research Scientist at the University of Alabama in Huntsville in 2001, he was a Senior Scientist for Climate Studies at NASA’s Marshall Space Flight Center: The total amount of CO2 humans have added to the atmosphere in the last 100 years has upset the radiative energy budget of the Earth by only 1%. The IPCC says there will be strong warming, with cloud changes making the warming worse. I claim there will be weak warming.
