Reply to comments from reviewer #1

Abstract

We thank the reviewer for the helpful comments. We have revised the manuscript according to all review comments we have received. A pointwise reply is given below, with the original comments in bold and our answers in red. This is a concise analysis of the current CMIP6-generation emission-driven Earth System Models' ability to reproduce satellite-observed variability characteristics of column-average atmospheric carbon dioxide concentrations (XCO 2). The manuscript provides a comparison with the previous generation of models C1 BGD