Temperature inversion in Logan vs SLC (Cache: home, university, agricultural)

[Trebek]

Hey all, I read many accounts that state: The cold inversion problem is worse in the Logan area than SLC. I read something from the University up there, that the main pollutant is ammonia and other agricultural wastes.

Questions:

1. How many days does the inversion in Logan last on average?
2. How many days does the inversion in SLC last on average?
3. What are the frequencies of inversion days in both places i.e. Does it ruin some, most, or all the winter?
4. Are the days and quality of inversion up in Logan subtantially worse than SLC?
5. What are the effects on humans in general?
6. Does air-filtration in the home help out the situation?


Thanks to any folks who care to answer any of these questions.

Trebek

[cottonwood2420]

An Inversion can last from a couple of days to several weeks at a time. Logan can be alot worse than Salt Lake in Inversions.

[alexei27]

Logan sits in the Cache Valley...which is smaller and a bit more isolated than the Salt Lake valley. Therefore...it is easier to trap air within that valley especially during an inversion. Logan has some pretty significant fog episodes esp in winter with snow on the ground. The fog is typically a lot thicker than in SLC with visibilities near zero.

Overall there are more fog days in Logan than SLC.

[cottonwood2420]

Originally Posted by alexei27

Logan sits in the Cache Valley...which is smaller and a bit more isolated than the Salt Lake valley. Therefore...it is easier to trap air within that valley especially during an inversion. Logan has some pretty significant fog episodes esp in winter with snow on the ground. The fog is typically a lot thicker than in SLC with visibilities near zero.

Overall there are more fog days in Logan than SLC.

They are on a Red burn alert alot during the Winter.

[Trebek]

Whats a "Red Burn" alert?