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Ozone Layer

Human activities, particularly the emission of CFCs, contribute to ozone layer depletion, leading to harmful environmental and health impacts such as increased UV radiation. Ozone depletion differs from global warming in causes and effects, with the former primarily affecting the stratosphere and the latter impacting global temperatures. Measures like the Montreal Protocol aim to restore the ozone layer, but challenges such as illegal chemical use and climate change threaten its recovery, which is expected to take until 2060-2070.

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18 views2 pages

Ozone Layer

Human activities, particularly the emission of CFCs, contribute to ozone layer depletion, leading to harmful environmental and health impacts such as increased UV radiation. Ozone depletion differs from global warming in causes and effects, with the former primarily affecting the stratosphere and the latter impacting global temperatures. Measures like the Montreal Protocol aim to restore the ozone layer, but challenges such as illegal chemical use and climate change threaten its recovery, which is expected to take until 2060-2070.

Uploaded by

Rumaisa Rumaisa
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© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Ozone Layer

Human activities contributing to


ozone layer depletion:
They primarily contribute through the emission of ozone
depleting substances,Particulary CFCs. These CFCs go in
the atmosphere and emit chlorine which harms the ozone
atoms by breaking them and making the ozone layer
thinner.
Environmental and health impacts:
Environmental impacts:

●​ If the ozone layer gets damaged, more harmful sun rays reach Earth, which can harm
plants, animals, and the oceans.
●​ Increased UV radiation can increase ground level ozone, which is an air pollutant.

Health impacts:

●​ Too much sun exposure can cause skin cancer, eye problems (like cataracts), and
make people sick more easily.

Different From Global Warming


●​ Ozone depletion is mainly due to ODS, while global warming is mainly due to GHGs.
●​ Ozone depletion increases UV radiation, while global warming increases Earth's
temperature.
●​ The effect of ozone layer is basically on the stratosphere , whereas the effect of
global warming is experienced globally , primarily focusing on troposphere
●​ Ozone layer depletion involves the thinning of the ozone layer, whereas global
warming involves increase in earth’s temperature

Measures taken to restore ozone layer


●​ The Montreal Protocol, an international agreement, mandated the elimination of
ozone-depleting chemicals (ODCs) like CFCs.
●​ Industries replaced ODCs in common products
●​ Ongoing scientific monitoring assesses the ozone layer's recovery and detects
potential new ODC threats.
●​ The Kigali Amendment extends this effort by phasing down hydrofluorocarbons
(HFCs)

Challenges and future risks


●​ The ozone layer blocks harmful UV radiation from the Sun.
●​ Some chemicals that damage the ozone, like CFCs, are still being used
illegally or aren't fully controlled.
●​ Climate change can affect ozone recovery by changing wind patterns and the
atmosphere.
●​ The ozone layer is especially vulnerable in polar regions, where colder
temperatures cause more damage.
●​ New chemicals, like certain refrigerants, might still harm the ozone layer if
not carefully controlled.
●​ The ozone layer is recovering slowly, but full recovery won’t happen until
2060-2070.
●​ The potential for new, unregulated chemicals to deplete ozone remains a
concern

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