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How Valuable is the Marcott 2013 Holocene Temperature Reconstruction?

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This is part one of a two part series on Marcott 2013. You can read the second part here . In 2013, Shaun Marcott and his collaborators published a global temperature reconstruction covering basically the entire Holocene - the last 11,300 years.[1] It was a significant achievement, and so it seems it must be vehemently attacked. The paper is nearly 10 years old at this point, and it's been both replicated and improved upon by later studies.[2][3] Perhaps therefore it's not really necessary for me to defend a paper that has both already been successfully defended[4][5][6][7] and has been replicated by further studies which use both more extensive proxies[2] and reanalyses.[3] However, the aspects of climate science that I find most fascinating are paleoclimate studies, and I would like this blog to develop a more or less "complete" treatment of the major paleoclimate studies that impact our understanding of climate science today. Seasonal Biases Long before Marcott...