What is the main cause for the formation of a polar front jet stream?
Domanda 396, Meteorology - ATPL - Airline Transport Pilot license
| The pressure difference, close to the ground, between a high over the Azores and a low over Iceland |
| The varied elevations of the tropopause in the polar front region |
| The north-south horizontal temperature gradient at the polar front |
| Strong winds in the upper atmosphere |
