Upper air measurements are taken by a group of sensors called a radiosonde. A radiosonde is a very small instrument package ...

If you've ever wondered why it's always sunny when you're cruising at altitude in a plane, it's because you've left the troposphere behind, along with most clouds. In the troposphere, air becomes ...

For example, pilots consider how the different layers affect an aircraft’s performance during ... The stratosphere typically sits above the troposphere, and they touch vertically like two ...