The alarmist’s climate crisis is encountering some serious headwinds. Not just from we skeptics but also from the ranks of the man-made global warming adherents. This posting will be to set the table for the subsequent postings that will illustrate the headwinds. Another posting that will illustrate the profound damage that the crisis crowd are doing to the young people will also be posted.
I posted in April 2021 how the alarmist’s computer forecasts were biased. Two concepts are the primary tools that the computer operators use to make predictions of future temperatures. One is the representative concentration pathway (RCP) and the other is the equilibrium climate sensitivity (ECS)
RCP
Representative Concentration Pathway (RCP) is an estimate of the amount of CO2 in the atmosphere at any given time.
The chart below shows the range of RCPs the computer programmer can use. The chart has RCPs portraying the forecasted amount of accumulated CO2 in the atmosphere out to the year 2100. The chart has a bit of dialog as well. More on this will appear in the upcoming posting on this topic.
ECS
Theory is that temperature will rise approximately 1C due to a doubling of atmospheric CO2. Further, the CO2 induced increase in temperature will result in creating water vapor. Water vapor is a powerful greenhouse gas. That and some other minor changes in atmospheric gases will result in an additional rise of 2C. Thus, CO2 doubling does not just create 1C rise but rather a 3C rise.
ECS is controversial. There are those that do not believe in the CO2 effect at all. They may not appreciate this postings discussion of ECS and RCP, but the posting is addressing what the Alarmist believe. Most buy into the concept but conclude that the effect is much less than a 3C rise,
This is how the ECS theory works. Surface warming due to doubling of the atmospheric CO2. Going from the nominal 400ppm atmospheric CO2 to 800ppm would result in 3C rise. But other test data says it is less.
Jonova chart
The computer programmer puts in the RCP and the ECS. He can get whatever temperature forecast he wants.
cbdakota
Climate Change Sanity 
Re: Equilibrium Climate Sensitivity (ECS)
Even James Hansen has stated the ECS is the most important input for all of the models.
You might want to examine the multiple papers by Jamal Munshi, Professor Emeritus at Sonoma State. He’s a statistician par excellence. A real numbers guy and he buries all the specious data manipulations. Munshi is well published in Social Science Research Network (SSRN), an open source e-publisher. I’ve had a paper posted in SSRN “Debunking the Myth of Man-Made Ozone Depletion”.
Here’s one of Munshi’s papers:
“Uncertainty in Empirical Climate Sensitivity Estimates 1850-2017”
17 Pages
Posted: 14 Feb 2018
Jamal Munshi
Sonoma State University
Date Written: February 3, 2018
Abstract
Atmospheric CO2 concentrations and surface temperature reconstructions in the study period 1850-2017 are used to estimate observed equilibrium climate sensitivity. Comparison of climate sensitivities in the first and second halves of the study period and a study of climate sensitivities in a moving 60-year window show that the estimated values of climate sensitivity are unstable and unreliable and that therefore they may not contain useful information.
Thanks for the links.
cbdakota.