The Truth Is Out: '1' Weird Trick That Estimates Global Warming Better Than NASA & James Hansen

Adjacent is an image of a  simple future temperature change estimator that is a complement to the CO2 mitigation calculator discussed here.

This estimator simply uses known empirical evidence (i.e. global CO2 emissions, CO2 ppm levels and global annual temperatures) from 1850 to 2012.

Using this 'weird trick' of estimating temperature change by only working with past empirical evidence allowed this cheapo estimator tool to produce a potential global temperature increase guesstimate of +0.55°C +0.45°C, for the span of 1960 to 2012 (update: corrected typo).

That estimate compares very favorably to the actual temperature increase that occurred: +0.50°C (annual HadCRUT4 global).

And what did the fancy NASA/Hansen multi-billion climate simulation model predict for that same period, 1960 to 2012? Approximately a +1.17°C increase, nowhere close to reality.

To use this simple tool to generate 'quick & dirty' estimates of future temps, go here. (This tool does not predict - it approximates a rough estimate that establishes a CO2, global warming reality starting point.)

Note1: The simple estimator allow two different means to calculate future temp changes.....by either inputting a desired future CO2 ppm level or by inputting a desired per year growth of ppm levels.