Question
Identify the terms associated with ozone measurement (A) Dobson (B) Spectrophotometer (C) Pyranometer (D) Planimeter (E) Anemometer
The correct answer is
(A) and (B) only
Dobson units express total-column ozone, and a Dobson spectrophotometer measures ozone through its absorption of ultraviolet radiation. A pyranometer measures solar irradiance, a planimeter measures area, and an anemometer measures wind speed. Hence A and B only.
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Important Questions from Ozone Layer Depletion
- Which of the following is a catalytically inactive (or reservoir) molecule containing chlorine in stratosphere?
- Choose the correct statement(s)
A. O$_3$ in stratosphere is not completely effective in shielding us from UV-B
B. UV-A is biologically least harmful.
C. Chapman mechanism deals with only O$_3$ formation in stratosphere.
D. Sunscreen lotions either reflect or absorb or scatter UV-B and UV-A
E. UV-B helps in dissociation of O$_3$ molecule in stratosphere.
Choose the correct answer from the options given below. Ozone layer depletion is a major phenomenon in :
- With regard to ozone depletion over Antarctica, select the false statement :
- Atmospheric life times of CFCs is typically in the range :
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