Question: what are the characteristics of the stratosphere?
Answer: Height. It extends up to a height of 10 to 50 km. ... 
Temperature Inversion. The lower layers of the stratosphere are colder & as we move upwards, the upper layers become hotter. ... 
Calm & stable layer. ... 
Suitable for flying aircraft. ... 
The flow of jet streams. ... 
Region of ozone formation.