...while the green/left would like us to believe that the science of climate change is settled, this blog has always stressed the great unknowns about our changing climate. These unknowns include in particular, the role of our oceans and the interactions of our cloud cover. Ongoing ocean temperature monitoring has cast serious doubt on the viability of IPCC climate models, and the great uncertainties regarding the role of the sun, cosmic rays and cloud formation still present great scientific challenges. Some of these challenges will be answered by research at CERN, (the HADRON nuclear collider) with the so called CLOUD experiment...and also with direct cloud sampling techniques. It seems that the more we learn, the more cause we have to doubt the validity of the ubiquitous climate models......the formation of low-level clouds...that have a cooling effect on Earth's climate—has vexed climate scientists for years. Current climate models treat cloud cover simplistically and make the assumption that cloud cover decreases as temperatures rise. New data from a cloud sampling experiment indicates that biological material—bacteria, spores and plant material—may account for 1/3 of the airborne material involved in cloud formation. Furthermore, biological material can form clouds at much warmer temperatures than mineral dust. These new discoveries indicate that modelers have the effects of temperature on low cloud cover backwards, placing all model predictions in doubt...In climate change science, which derives many of its projections from computer simulations of climate phenomena, the actions of aerosols on clouds represent what scientists consider the greatest uncertainty in modeling predictions for the future...aerosols' role in cloud formation had been inadequately portrayed in climate models...These are just the latest revelations about the shaky foundations climate models are built upon...missing factors and erroneous feedback loops highlight how arbitrary decisions, which happen to reinforce the modeler's desired result, can undermine a model's veracity. Nobody denies that atmospheric CO2 increases environmental heating. The problem is that, relative to other forcings, this is a small effect that is quickly overwhelmed by other factors. A slight change in cloud cover can completely nullify any effect of CO2, and we have no way of accurately predicting cloud cover—certainly not with the models currently available...more at TheResilientEarth here...
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