I have a little problem of understanding how to pick the preposition of "at" ,"of" or "in" in Illogical comparative : e.g.
The climate in the north is colder than that of the south.
Why do we us "of" the south instead of "in" the south.
I am thinking it should be
The climate in the north is colder than the climate in the south.
So why "of" ?