Per the catastrophic anthropogenic global warming (CAGW) hypothesis, human CO2 emissions above 350 ppm will cause accelerating global warming temperature changes year-in and year-out, resulting in extreme climate change - the IPCC gold-standard global temperature dataset confirms that the hypothetical, relentless global warming changes from human CO2 emissions have not happened...ergo, extreme climate change from accelerating warming is a moot point
(click on charts to enlarge, sources of data)
The leftmost chart plots each year's temperature change (the triangles) from June to June, plus it includes a curve (black line) of annual CO2 levels since 1850. The red curve represents a moving 30-year average of the June-to-June temperature changes, and the blue line is placed at the peak of the 30-year average change.
- This chart clearly demonstrates that global temperature changes are not accelerating or occurring in a unidirectional warming mode, as would be expected per the CAGW hypothesis
- This chart reveals that the rapid and consistent increase in atmospheric CO2 levels is not having the predicted impact on global June temperature change
- This chart reveals that the moving 30-year average (red curve) of June temperature changes has remained in a very narrow band, which is currently below the previous peaks of the 30-year average (see blue line)
- When closely examining the past June temperature changes, this chart reveals that the most extreme (warming and cooling changes) took place well before the 1990s and 2000s.
The rightmost chart represents the most extreme June-to-June temperature changes since 1850, both warming and cooling change extremes. There are a total of 163 observations of June-to-June temperature changes since 1850 and this column chart depicts the 20 most extreme changes (12.3% of observations).
- This chart reveals that the majority of the June extreme warming/climate changes took place well before the 1990s, the 2000s and the 2010s.
- This chart also reveals that the majority of the June extreme cooling/climate changes took place well before the 1990s, the 2000s and the 2010s.
- In fact, this chart demonstrates that any recent (the last two decades+) June extreme temperature changes were likely a result of the super El Niño of 1997/1998 and the subsequent global temperature collapse during the 1999 La Niña.
- This chart clearly shows that zero extreme June-to-June warming extremes took place since 1997 - that's 16 years in a row of normalcy
- This chart actually documents the known travesty of the CAGW hypothesis - the predicted, extreme June temperature warming changes (due to the enormous increase of human CO2 emissions since the 1970s) were supposed to start during the 1990's, right on through June 2013 - the predicted, runaway extreme June-warming changes did not happen.
Note: Charts' plots and averages produced using Excel. Anyone interested in the actual empirical evidence can download the datasets used for these charts and graph the data using Excel - no PhD, nor programming/coding skills required. 'Just Do It' and educate yourself about the facts instead of relying on dubious hearsay and speculations, or believing the infamous 3rd party press releases that the mainstream environmental journalists publish without any due diligence.