Q39: Dobson Units (DU) are used to measure : - Ecology and Environment - Biology CUET UG 26-05-2023 Shift 3 Paper | Agrigyan

The thickness of ozone in a column of air from the ground to the top of the atmosphere is measured in terms of Dobson Units (DU). One Dobson Unit corresponds to a column of ozone that would be $0.01\text{ mm}$ thick at standard temperature and pressure ($STP$).