EDUCATION UGC NET
ENVIRONMENTAL STUDIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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dB
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DU
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PPB
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PPM
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Detailed explanation-1: -The thickness of the ozone layer in a column of air from the ground to the top of the atmosphere is measured in terms of Dobson Units (DU).
Detailed explanation-2: -The Dobson Unit is the most common unit for measuring ozone concentration.
Detailed explanation-3: -It acts as a shield absorbing ultraviolet radiations from the sun, The thickness of ozone in a column of air taken from the ground to the top of the atmosphere is measured in Dobson units(DU), 1 DU = 1 ppb.
Detailed explanation-4: -The Dobson unit (DU) is a unit of measurement of the amount of a trace gas in a vertical column through the Earth’s atmosphere.
Detailed explanation-5: -TCO (Total Column Ozone): a measurement of the total amount of atmospheric ozone in a given column. Usually, TCO is measured in Dobson Units (DU).