The recent United Nations report, Scientific Assessment of Ozone Depletion: 2022 said that the Earth’s ozone layer is slowly recovering.
Why in news?
- The successful phasing out of banned substances as envisioned by the Montreal Protocol has set the stage for a complete recovery of the ozone layer by the 2060s, a United Nations-backed panel of experts said at the American Meteorological Society’s annual meeting on January 8, 2023.
What is Ozone?
- Ozone is a gas composed of three atoms of oxygen. It is both a natural and a man-made product that occurs in the Earth's upper atmosphere (Stratospheric ozone) and lower atmosphere (the troposphere).
- Stratospheric ozone is formed naturally through the interaction of solar ultraviolet (UV) radiation with molecular oxygen (O2).
- The "ozone layer," approximately 6 to 30 miles above the Earth's surface, reduces the amount of harmful UV radiation reaching the Earth's surface.
Q1) What is a stratosphere?
Stratosphere is a layer of Earth’s atmosphere lying between the troposphere and the mesosphere.