here is a new study... that contradicts one the main tenants of nutter theory.
don't go blaming watts... he is just summarizing the new study published in a agw nutter respected journal...
BOMBSHELL: Study shows greenhouse gas induced warming dropped for the past 14 years
Posted on August 5, 2014 by Anthony Watts
Paper finds a decrease of IR radiation from greenhouse gases over past 14 years, contradicts expected increase â cloudiness blamed for difference.
A paper published in the Journal of Climate finds from 800,000 observations a significant decrease in longwave infrared radiation from increasing greenhouse gases over the 14 year period 1996-2010 in the US Great Plains. CO2 levels increased ~7% over this period and according to AGW theory, downwelling IR should have instead increased over this period.
According to the authors,
âThe AERI data record demonstrates that the downwelling infrared radiance is decreasing over this 14-yr period in the winter, summer, and autumn seasons but it is increasing in the spring; these trends are statistically significant and are primarily due to long-term change in the cloudiness above the site.â
The findings contradict the main tenet of AGW theory which states increasing greenhouse gases including the primary greenhouse gas water vapor and clouds will cause an increase of downwelling longwave infrared âback-radiation.â
The paper also finds a negative trend in precipitable water vapor, as do other global datasets, again the opposite of predictions of AGW theory that warming allegedly from CO2 will increase precipitable water vapor in the atmosphere to allegedly amplify warming by 3-5 times. Is the unexpected decrease in water vapor the cause of the decrease in downwelling IR?
Global datasets also show an increase of outgoing longwave IR radiation to space from greenhouse gases over the past 62 years, again in contradiction to the predictions of AGW theory.
Gero, P. Jonathan, David D. Turner, 2011: Long-Term Trends in Downwelling Spectral Infrared Radiance over the U.S. Southern Great Plains. J. Climate, 24, 4831â4843.
doi:
http://dx.doi.org/10.1175/2011JCLI4210.1