OK I have read my MET books and they tell you all about Jetstreams and how there is a rapid change in OAT as you approach it, cirrus or cirrostratus cloud or hazy skies if no cloud, but that is about it. So a couple of questions;
1. So what is this rapid change, is it a rapid drop off of OAT or does the temperature oscillate up and down?
2. What does one do if they get this rapid OAT change, descend/climb?
3. Where do comercial aircraft travel in relation to the Jetstream? Above if they can or well below?
4. What is the significance of the Japanese Jetstream? Is it the fact that it is a sub-tropical jet that combines with the polar jet to make it so strong, and that it may affect flights flying nth/sth in that region and also on the polar route between Hong Kong and New York?
any help appreciated
Cheers P.R.
