Part 2 of the mathematics of CO2. It is really worthwhile getting an insight into this important area of climate science
Guest essay by Mike Jonas
This article is the second in a series of four articles.
Part 1 of the series (Part 1) is here
In Part 1, simple mathematical formulae were developed to emulate the carbon dioxide (CO2.) contribution to global temperature change, as represented in the computer climate models.
This article uses the formulae to have a look at the Medieval Warming Period (MWP) and Little Ice Age (LIA).
Note : This article does not say anything new, or claim to find any new results. It has all been said many times before. But by using simple formulae that emulate the internal workings of the computer climate models, it allows the CO2 and non-CO2 components of global temperature change to be quantified using a spreadsheet  instead of a sophisticated climate model.
Please note : In this article, all temperatures referred to are deg C anomalies unless…
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