NASA's James Hansen is the enviros' point person on global warming, regularly serving up scare stories on impending environmental doom as worldwide temperatures continue to drop. But his former boss at NASA, Dr. John S. Theon, says he has become a global warming skeptic.
“I appreciate the opportunity to add my name to those who disagree that global warming is man made,” Theon wrote to the Minority Office at the Environment and Public Works Committee on January 15, 2009. Theon is the former Chief of the Climate Processes Research Program at NASA Headquarters and former Chief of the Atmospheric Dynamics & Radiation Branch.
Theon declared “climate models are useless.” “My own belief concerning anthropogenic climate change is that the models do not realistically simulate the climate system because there are many very important sub-grid scale processes that the models either replicate poorly or completely omit,” Theon explained. “Furthermore, some scientists have manipulated the observed data to justify their model results.
In doing so, they neither explain what they have modified in the observations, nor explain how they did it. They have resisted making their work transparent so that it can be replicated independently by other scientists. This is clearly contrary to how science should be done. Thus there is no rational justification for using climate model forecasts to determine public policy,” he added.
There is more at Watts up with That.