Penalties for set coordinates?

[skuzzy]

I was just crossing the Alps with a campaign to extend my borders as Epeiros and realized for the first time "Why is it so damn easy to cross those cursed mountains?" and the question popped into my head if casualties can be inflicted over a turn for given coordinates given set conditions such as Winter in the Alps, Daytime in the Desert, and other joyous occasions where armies suffer to nature. This would definitely help limit ridiculous expansion by the AI to an extent and would add a hint of spicy realism. I don't know if this is possible but at 3:30am after playing RTW for multiple hours your brain starts to get a little screwy.