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Access Issues

Climate scientist John Christy presented a series of charts and data at a global warming conference showing warming is proceeding at a modest pace and not causing significant harm. Christy, a climate scientist at the University of Alabama at Huntsville who oversees NASA’s satellite instruments measuring global temperatures, presented records debunking many of the most frequently asserted global warming myths.

In his first chart, Christy presented National Oceanic and Atmospheric Administration (NOAA) data documenting a long-term decline in powerful tornadoes. Data during the past 50 years show tornado activity peaked in the early 1970s and has been in gradual decline for the past 40 years.

In his second chart, Christy presented tropical storm data since 1970 showing a gradual decline in tropical storm and hurricane activity.

In his third chart, Christy presented Northern Hemisphere snow cover data showing no trend in snow cover for the past 45 years.

Next, Christy presented NOAA data since the late 1800s showing no trends in drought or extreme wetness.

Christy then presented U.S. Historical Climatology Network data showing no recent increase in the frequency of record-high temperatures. The data showed more high temperature records were set between 1900 and 1955 than between 1955 and 2013.

Christy then presented satellite temperature readings showing climate models referenced by the United Nations Intergovernmental Panel on Climate Change predicted far more warming during the past 20 years than occurred in the real world.

Finally, Christy presented data showing a 50 percent cut in U.S. carbon dioxide emissions would reduce global temperatures by merely 0.07 degrees Celsius by 2050 and little more reductions after that. An 80 percent reduction in U.S. emissions would not accomplish much more than a 50 percent reduction, Christy showed.

“We are not evil people for emitting CO2, we are good people because we recognize the direct and powerful benefits to human life that carbon-based energy supplies,” Christy summarized.

SOURCES: Power Line and GlobalWarming.org

 

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