"High to low down you go"
Works in three ways
-Altimeter error - if pressure or temperature decreasing altimeter will overread
-Jetstreams when southbound, decreasing temp=you'll go under it
Remember this - Lenticular cloud = Mountain wave turbulence. Sounds obvious but when I did it there was more then one correct answer to their question.
Work out where jet streams are in relation to the tropopause, I got a question wrong in the test when I answered "at the tropopause". I'm still not sure if they are slightly above or slightly below.