Question

How is the thickness of the ozone in a column of air from the ground to the top of the atmosphere measured?

• A. Dobson units
• B. Hertz
• C. Centimeter
• D. Ampere

Answer 1

Answer:

A. Dobson units

• Dobson unit (DU) is used to measure the thickness of the ozone in a column of air from the ground to the top of the atmosphere.

• A layer of pure ozone that is 0.01 mm thick at standard temperature and pressure is equivalent to one Dobson unit.