citestats.user.js.
It's a Greasemonkey script, for Firefox browser; run it on the Google Scholar Advanced Search webpage.
For a given author, it calculates very crude citation statistics for their Google Scholar search results, and prints them on the page, near the top, with a pink background.
Please put quotes around author name. And specify 100 results, since this script only runs on the first page of results.
If searching for a ballpark measure of climate science creds, you might want to limit the search to "Physics, Astronomy, and Planetary Science" since the biological and medical science literature is huge, and author names are not always unique.