So yes, I know very much well what I am talking about. And I could talk hours and hours and hours about this.
Not so much about climate modeling (still I know a few things). But about predicative science in general.
I would imagine lots of people in climate prediction are using old code (building on top of), which they cannot convert and really they dont know what the code does (like it was written in the 70s by people who are DEAD and left no documentation)
Considering the kind and quality of physicist code (and - in particular - the documentation of said code), this is not only probable - it is a virtual certainty (you should excuse the pun).
Ideally, you'd want a computer code cleanup staff on permanent retainer at all major universities. But that would not be cheap.
- Jake If you only spend 20 minutes of the rest of your life on economics, go spend them here.
