What is Ozon Layer?, Depletion of Ozone Layer (Ozone Hole) and Healing of Ozone hole

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Chrvoje engineering presents:
What is the ozone layer?
The ozone layer is a deep layer in the stratosphere, encircling the Earth, that has large amounts of ozone in it. The layer shields the entire Earth from much of the harmful ultraviolet radiation that comes from the sun.
The thickness of the ozone layer is about 3 to 5 mm, but it pretty much fluctuates depending on the season and geography.

Depletion of Ozone Layer (Ozone Hole):

Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about four percent in the total amount of ozone in Earth's stratosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions.[1] The latter phenomenon is referred to as the ozone hole. In addition to these well-known stratospheric phenomena, there are also springtime polar tropospheric ozone depletion events.

Healing of Ozone hole:

The study, published in Science, states that the phase-out of chlorofluorocarbon (CFC) chemicals means that the ozone layer is “expected to recover in response, albeit very slowly.” CFCs, once commonly found in aerosols and refrigeration, can linger in the atmosphere for more than 50 years, meaning that the ozone hole will not be considered healed until 2050 or 2060.

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Create: Hrvoje Čočić
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Category: Education
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