|Source: Utah Division of Air Quality|
|Morning (0500 MST) soundings from 29 Jan – 4 Feb 2013|
Another curious oddity is that last night there was very little drop in temperature and PM2.5 at the Salt Lake City sensor above. We have seen very large nighttime drops in PM2.5 at that station during inversion events earlier this season (or even the previous day in the trace above), but last night temperatures remained fairly constant and the PM2.5 was elevated all night long.
So many questions, so little time. The role of topography, radiative processes, snow cover, and the Great Salt Lake in this event deserves further investigation. Feel free to dig in and comment.