How relevant is climate change research for climate change policy? An empirical analysis based on Overton data

the UCSD map of science [46]. Clusters with similar topical content are close to each other on the map. Aggregations of clusters can be perceived as discipline-level structures; local areas that contain clusters of many colors are multidisciplinary. Although dot sizes for overlays are based on the number of documents matching overlay criteria, the intent is to provide a qualita- tive (gestalt) visual view of the data, e.g. to show where result sets are concentrated or if they are evenly spread throughout the map. Fig 10 shows four maps for comparison: (1) All papers from Scopus, (2) Climate change papers in total, (3) Climate change papers with at least one policy citation, and (4) Papers with at least one policy citation. Comparing map (2) with map (3), for example, one can see that Fig 9. Correlation between the journal-based number of climate change policy document citations and Scopus citations. The size of the circles reflects the CiteScore of the journals (Spearman rank correlation = 0.81; an interactive version can be viewed at: https://s.gwdg.de/ 4weLvb). https://doi.org/10.1371/journal.pone.0274693.g009 PLOS ONE How relevant is climate change research for climate change policy? PLOS ONE | https://doi.org/10.1371/journal.pone.0274693 September 22, 2022 14 / 24