English: "(USD). The gray areas represent ranges of estimates derived from short and long search strings." "There is no straightforward way to identify funding related to climate change research within such a large volume of data, so we developed alternative search strings: a short string with 9 climate-related keywords, such as “climate change” and “global warming”, and a long string with 89 keywords, all combined with the Boolean operator “OR” and applied to the titles and summaries of all research grants (see the full search strings in the appendices). By using two search strings, we were able to draw up lower and upper boundaries of the possible ranges of funding granted to different fields of research (see Fig. 1), a more cautious approach than trying to make an exact estimate. The two research strings can also be useful methodological tools for future research."