Curry: 'On balance, I don't see any particular dangers from greenhouse warming'
'[Humans do] influence climate to some extent, what we do with land-use changes and what we put into the atmosphere. But I don't think its a large enough impact to dominate over natural climate variability.
'The collapse of the consensus on cholesterol and heart disease-- that one collapsed overnight. I can only hope that sanity will eventually prevail with the climate problem as well.'
'The United Nations Intergovernmental Panel on Climate Change (IPCC) concluded that global mean temperature [changes] cannot be forecast because climate is too complex. They nevertheless rely on complex computer modelling to represent their assumptions about how the climate works. The outputs of such models are called “scenarios.” In effect, the IPCC tells stories, illustrated with computer graphics, about what would happen if their assumptions were correct.'
Curry to Warmist Rep. Don Beyer, a Virginia Democrat: 'What is being proposed is ineffective, it’s not going to do anything even if the U.S. is successful at meeting 80 percent reductions by 2050 this is going to reduce warming by about a tenth of a degree centigrade. It’s not going to do anything.'
Georgia Institute of Technology's Dr. Judith Curry on April 15, 2015 at The House of Representatives Committee on Science, Space and Technology Hearing on the President’s UN Climate Pledge: 'Recent data and research supports the importance of natural climate variability and calls into question the conclusion that humans are the dominant cause of recent climate change. This includes:
The slow down in global warming since 1998
Reduced estimates of the sensitivity of climate to carbon dioxide
Climate models that are predicting much more warming than has been observed so far in the 21st century
We have made some questionable choices in defining the problem of climate change and its solution:
The definition of ‘dangerous’ climate change is ambiguous, and hypothesized catastrophic tipping points are regarded as very or extremely unlikely in the 21st century
Efforts to link dangerous impacts of extreme weather events to human-caused warming are misleading and unsupported by evidence.
Singer: 'I accept the theoretical existence of a greenhouse effect. In other words, I recognize carbon dioxide, water vapor, and other gases in the atmosphere can absorb infrared radiation and have a potential effect on climate. On the other hand, I am not convinced these effects really exist to any appreciable extent, so I am definitely not a lukewarmer.'