Why is stratospheric air generally drier than tropospheric air?
Answer and explanation
Correct answer: Water vapour entry is limited at the cold tropopause region
The governing concept is atmospheric moisture transport. Air rising from the troposphere encounters the very cold tropopause; much of its water vapour condenses or freezes and is removed before the air enters the stratosphere. Hence option A is correct. Oceans do not exist in the stratosphere, the exosphere does not supply rain, and mesosphere formation of vapour does not explain ordinary stratospheric dryness.
Frequently asked questions
What is the correct answer to this question?
Water vapour entry is limited at the cold tropopause region
Why is this the correct answer?
The governing concept is atmospheric moisture transport. Air rising from the troposphere encounters the very cold tropopause; much of its water vapour condenses or freezes and is removed before the air enters the stratosphere. Hence option A is correct. Oceans do not exist in the stratosphere, the exosphere does not supply rain, and mesosphere formation of vapour does not explain ordinary stratospheric dryness.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Introduction to Accounting.
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