Per our prior article, an examination of the empirical evidence for atmospheric warming was done to determine if Earth had crossed the 'tipping point' red line. This article drills down further to look at specific data points.
The adjacent chart - using the same information as before - narrows the focus down to a few specific markers of both short-term and long-term global warming acceleration.
Besides showing the cumulative CO2 growth, this chart depicts the plots (pinkish circles sans the connecting curve lines) of the 12-month, 24-month, and 36-month rolling per century warming acceleration trends
[For those counting: the count of their respective calculated trend points are as follows: 459 calculated points; 447 calculated points; 435 calculated points.]
On the chart, the 12-month first and last calculated trend points are marked as red dots; for the 24-month first and last, the representation marks are the blue dots; and for the 36-month first and last, those are designated by the two bright green circles.
Clearly, despite the substantial increase of atmospheric CO2 levels from 1979 to 2018, all the ending acceleration trend points of February 2018 are actually lower than the very first trend points for each short-term period.
Moving on.
The chart's aqua colored trend line is constructed using the 240-month rolling calculated trends (the count of calculated trend points making up the aqua line is 231). The aqua colored triangles mark the first, last, and highest calculated warming trend points.
For the long-term, the empirical evidence confirms that the February 2018 acceleration trend of 1.17°C per century is lower than both the beginning trend value of 1.74°C and the highest trend value reached way back in April 2004 of 2.52°C per century.
One could surmise that this result is climate evidence of a long-term atmospheric negative feedback mechanism in play.
Conclusion: For a tipping point and/or runaway warming to be reached, and then survive, the anthropogenic global warming hypothesis demands that the lower troposphere warms in a consistent and accelerating mode, due to the hypothetical positive atmospheric feedbacks supposedly produced from fossil fuel CO2 emissions. As this analysis substantiates what the prior article had found, the current climate "tipping point" claims and/or concerns are completely without empirical evidence merit or, if you prefer, categorically factless.
Additional global, regional, and historical temperature charts.
Note: This analysis of the empirical data from January 1979 through 2018 is about the past, and it should not be interpreted as a future prediction of climate change/response. Excel was used to calculate and plot the multiple rolling/moving LT temperature trends and monthly CO2 cumulative totals.