Question

Define stratosphere long answer

Answer 1

The stratosphere is the second major atmospheric layer above the troposphere, extending in altitude from about 8 to 30 miles high. No weather occurs in the stratosphere. The statosphere contains over 15% of the total mass of the atmosphere, and is where the ozone layer is located. 

Air temperature slowly increases with height in the stratosphere, in contrast with the troposphere where the temperature rapidly decreases with height. This unusual temperature structure is caused by absorption of sunlight by ozone. 

All weather stops at the top of the troposphere (called the tropopause), and the stratosphere is essentially cloud-free. If you see a tall thunderstorm with an anvil cloud, it is likely that the anvil cloud has reached the bottom of the stratosphere. At that level, atmospheric convection stops because rising cloudy air parcels are no longer warmer than their environment, since stratospheric air is relatively warm.

Answer 2

The layer above tropopause is called stratosphere and it extended upto 50 km. It is a stratified region and there will not be any vigorous conventive activities . This is because of increasing temperature with altitude. Presence of ozone layer is the reason for the increasing temperature in stratosphere. Solar energy converted into kinetic energy when ozone absorb UV radiation. The upper limit is called stratopause .