Wow! I looked at the most prominent scientists who endorse AGW theory that I know of & none of them have degrees in climatology:
Michael E. Mann:
https://en.wikipedia.org/wiki/Michael_E._Mann
A.B. applied mathematics and physics (1989)
MS physics (1991)
MPhil physics (1991)
MPhil geology (1993)
PhD geology & geophysics (1998)
James Hansen:
https://en.wikipedia.org/wiki/James_Hansen
B.A. in Physics and Mathematics with highest distinction in 1963
M.S. in Astronomy in 1965
Ph.D. in Physics in 1967
John Cook:
https://skepticalscience.com/docs/John_Cook_CV.pdf
2012-2016 Doctorate of Philosophy
School of Psychology, University of Western Australia, Australia.
1989-1992 B.Sc. First Class Honours, Physics.
University of Queensland, Australia.
Bill Nye (actually an engineer):
https://en.wikipedia.org/wiki/Bill_Nye
BS Mechanical Engineering (1977)
This human-caused global warming alarmism is starting to look more & more like Joe Pesci's character's description of the DA's case in the movie My Cousin Vinny (a playing cards bricks illusion):