Therin of Andor wrote:
And that flash flood scene in "Paradigm" suddenly became even more amazing when the ENT episode, "The Aenar", showed us so much ice and snow. But yeah, "The Aenar" was set on Andor's north pole, the Aenar themselves had passed into legend and one can imagine that the Andorian equator is heavily populated and perhaps a bit warmer.
Actually, in "The Aenar," it was said that there were places on Andoria where the temperature rose "above freezing for weeks at a time," suggesting that it was a pretty thoroughly glaciated planet at the time. And Shran said their cities were underground and he hadn't seen the sun until he was 15. So there's definitely been some major warming since then.