I'm no scientist by any stretch of the imagination, the last time when I read something related to higher physics was ~20 years ago, in college, but I have to ask how is that topic related to modern physics. You're correct, it sounds like like a worthy Nobel for an Earth Sciences Nobel, or a Meteorology one (to be more direct), if those two things existed (maybe they should), but, again, don't know how meteorology (what computer-based climate simulation basically is) is the same thing as higher physics.
The tag line sells it really poorly.
> In the 1960s, he led the development of physical models of the Earth’s climate and was the first person to explore the interaction between radiation balance and the vertical transport of air masses. His work laid the foundation for the development of current climate models.
As far as I understand (I am not a physicist), you're right: climate is not new, and climate models have been getting better for decades. And that's (in part) because of this guy's work, half a century ago. It sure pushed the boundaries of physics at the time, didn't it?
Obviously he discovered something a lot more noteworthy than that, but these one line summaries are doing a terrible job of hinting at what.
[1]: https://journals.ametsoc.org/view/journals/atsc/24/3/1520-04...