Have read quite a few, but if you have a favorite, I'll bite.
You could start with NOAA, NASA, Harvard, and all the major research universities in the world. Oh wait,nevermind, they are all in on this global conspiracy, so keep believing what is published in a fictional book written by an author with no direct authority in GCC.
I have, again read the book, its fiction, it's meant to be entertaining, but then look at his acknowledgements, he actually did his footwork. When you go to a single source you get a slanted take on the story, Crichtons started that way as well, but he sure did use a lot of resources.
I don't think those sources above would constitute a "single source" Again, check out the research done at the major research universities in the USA, none agree with the claims made by crighton, in fact all the points he raises have be easily and thoroughly debunked.
https://www.brookings.edu/opinions/michael-crichton-and-global-warming/Several scientists whose research had been referenced in the novel stated that Crichton had distorted it in the novel. Peter Doran, leading author of the Nature paper,[28] wrote in the New York Times: "our results have been misused as 'evidence' against global warming by Michael Crichton in his novel 'State of Fear'".[23]
Myles Allen, Head of the Climate Dynamics Group, Department of Physics, University of Oxford, wrote in Nature in 2005:
Michael Crichton's latest blockbuster, State of Fear, is also on the theme of global warming and is, ...likely to mislead the unwary.... Although this is a work of fiction, Crichton's use of footnotes and appendices is clearly intended to give an impression of scientific authority.[1]
The American Geophysical Union, consisting of over 50,000 members from over 135 countries, states in their newspaper Eos in 2006, "We have seen from encounters with the public how the political use of State of Fear has changed public perception of scientists, especially researchers in global warming, toward suspicion and hostility."[29]
