I thought it was not available yet, but it appears it unlocks when normal is beat! That mode fixes a lot of the problems I had, and also it seems that emissions although graphically produced only at the end of a cycle are actually produced along the way in some sense, which is good because otherwise the juggling I'd been doing putting industry out of the field and then back in again would let you get all the benefits at none of the cost.
You can still just toss industry to win, though, basically, although you need to wait a bit to gain enough resource production to handle the worse and more frequent events now. You just leave it out of the zone and then bring it back in briefly whenever it is about to be destroyed.