It has been a spectacular failure, which is why you pompous warmist hypocrites ignore it, despite that it all comes from your holy climate bible, the IPCC reports. I have posted the evidence several times now, yet not once did any of you warmist clods make a cogent reply to them, not ONCE. Because you KNOW you can't since the evidence of its failure is INDISPUTABLE!
Your strawmen do not address the fact that observed temperatures are within the predicted range.
Climate models are even more accurate than you thought
2015 11.00 BST Last modified on Wed 14 Feb 2018 17.38 GMT
[...] When accounting for these factors, the study finds that the difference between observed and modeled temperatures since 1975 is smaller than previously believed. The models had projected a 0.226°C per decade global surface air warming trend for 1975–2014 (and 0.212°C per decade over the geographic area covered by the HadCRUT4 record). However, when matching the HadCRUT4 methods for measuring sea surface temperatures, the modeled trend is reduced to 0.196°C per decade. The observed HadCRUT4 trend is 0.170°C per decade.
Comparison of 84 climate model simulations (using RCP8.5) against HadCRUT4 observations (black), using either air temperatures (red line and shading) or blended temperatures using the HadCRUT4 method (blue line and shading). The upper panel shows anomalies derived from the unmodified climate model results, the lower shows the results adjusted to include the effect of updated forcings from Schmidt et al. (2014).
https://www.theguardian.com
Oh man you make clear how clueless you are on this because Nuttyboy left out some critical things that would have easily destroyed it.
Do you know what RCP 8.5 forcings are and how much CO2 yearly PPM increase is needed to make it fit into their insane of at least 5C warming projection by 2100?
Right now the rate of warming (1.6C per decade) is falling well BELOW the emission scenarios based warm forcing effect, as posted by the IPCC over the years. The IPCC since 1995 has been forcasting at least .30C per decade but never reaches .20C in any decade since 1990, with an increasing failing rate over time.
Satellite data is the only appropriate database because it is a well covered measure of the atmosphere, where most of the postulated CO2 warm forcing effect is to take place in.
HadCrut4 doesn't cover atmosphere temperature at all, just at the SURFACE:
From
Wikipedia
"HadCRUT is the
dataset of monthly
instrumental temperature records formed by combining the sea surface temperature records compiled by the
Hadley Centre of the UK
Met Office and the land surface air temperature records compiled by the
Climatic Research Unit (CRU) of the
University of East Anglia."
Hint: each doubling of the atmospheric CO2 concentration will add 3.7 W/m² to the net infrared radiative flux.
Hint: What is 3ppm X 81 years = _______?
Hint: 8 decades X the current .16C per decade warming rate = _________?
You fell for the worst possible scenario that is all but impossible for it to happen. CO2 levels will not likely reach beyond the 650 ppm level by 2100, even if it average 3 ppm per year, which is highly unlikely as it has reached 3 ppm only ONCE since 1958.
You are truly ignorant in this stuff!
