Wood Romances

CO2 Coalition seems to think it needs to say almost the same thing three times in slightly different ways. In " Fact #19 ," " Fact #20 " and " Fact #28 " they said in various ways that global temperatures have changed a lot across geologic history, and current temperatures are colder than most of geologic history. While these things are generally true, they are also completely irrelevant to whether humans are changing global temperatures through our carbon emissions and whether that is causing harm for human civilization and biodiversity. There are still several misleading things being said in these three "facts," beginning with the choice of graph. CO2 Coalition shows some version of the above graph in all three of these "facts," claiming it comes from "Scotese (2002)." This gives the impression they got this from a scientific paper, but it's not. It's a schematic that Christopher Scotese put on a website over 20 ye...

For over 20 years, geologists have attempted to model CO2 concentrations across the geologic past. Geologists currently have sufficient proxy evidence to reconstruct CO2 concentrations for significant parts of the last 420 million years, but models can be useful to infer concentrations when proxy evidence is weaker or lacks sufficient resolution. While "box" models like COSPE or GEOCARBSULF  confirm broad correlations between CO2 and global temperatures , the correlation may be improved if the models take better account of tectonic processes affecting CO2 concentrations. Evaluation of Proxies for CO2 and Temperatures In a study published three years ago, Mills et al 2019 evaluated the performance of CO2 proxies as well as COPSE and GEOCARBSULF "box" models for CO2. The latter model is the most recent update to the GEOCARB model that is frequently misused in contrarian graphs of CO2 and temperature - GEOCARBIII was published in Berner 2001 and is often plotted wit...