Which one among the following is true about Ozone Hole?

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It is the loss of Tropospheric ozone over Antarctica

It is the loss of Stratospheric ozone over Antarctica

It is a hole in the Antarctic ice sheet created due to ozone

It is the loss of equatorial ozone

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UPSC Geoscientist – 2021

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The “Ozone Hole” refers to the significant thinning or depletion of the protective stratospheric ozone layer, primarily observed over the Antarctic region during the spring (August-October).

The stratospheric ozone layer absorbs most of the Sun’s harmful ultraviolet (UV) radiation. Its depletion, mainly due to human-produced chemicals like CFCs and halons, leads to increased UV radiation reaching the Earth’s surface.

Ozone depletion also occurs over the Arctic, but the phenomenon is more severe and consistent over Antarctica due to specific atmospheric conditions (polar vortex and polar stratospheric clouds). Tropospheric ozone is a greenhouse gas and an air pollutant, harmful to human health and ecosystems, and is distinct from the stratospheric ozone layer.

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