C3: Extreme Temperature Change: NOAA Data Prove Extreme Temperatures Occurred Prior To Large CO2 Emissions

The modern U.S. extreme temperature changes occurring under high atmospheric CO2 levels are insignificant, compared to those that happened under low global CO2 level conditions – below 350 ppm

(click on image to enlarge)

Extreme temperature change Noaa co2 emissions Expanding on previous ‘C3’ articles, here and here, this new chart reveals, record-setting U.S. maximum and minimum temperatures occurred with much more frequency prior to the large influx of human CO2 emissions.

The decades prior to the 1960’s produced 84% of the hot maximum, record-setting temperatures; for the same decades, they produced 62% of record-setting cold temperatures.

And despite the much higher atmospheric CO2 levels, the 21st century is not producing the IPCC-predicted, record-setting temperatures, be they high or low.

Look closely, since 1999, zero hot record-setting U.S. temperatures have happened; but wait……OMG, one new cold extreme temperature, in one single U.S. state was confirmed!

Of course, the U.S summer of 2012 has been a hot and dry one for major regions of the country, and new maximum state records will likely happen. But frankly, per the chart, it appears the U.S. was long overdue for a sizzling summer of records and thus the probability for it to happen was high, regardless of CO2 levels.

Conclusions: Extreme temperature change is not a function of high atmospheric CO2 levels – those above 350 ppm. For the U.S., the vast majority for both extreme hot and cold record-setting temperatures took place prior to 1960 when human CO2 emissions were a tiny fraction of today’s. The NOAA/NCDC climate research agency has verified this as empirically correct.

Modern, regional, historical and fabricating-fake temperature charts.

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