Ozone layer is healing

Ozone Layer Is Healing Itself | It is On Track To Recovery And Might Avoid Global Warming!

The ozone layer, a protective shield to Earth against the scorching harmful ultraviolet radiation of the sun, has surprisingly begun its recovery. As scientists put it, the ozone layer is basically healing itself. According to a United Nations-backed panel of experts, the ozone layer is on track to recover within four decades.

The recovery will take many years. However, if current policies remain steady, the ozone layer will recover to 1980 levels (before the creation of the ozone hole) by 2040. The findings also suggest that it will return to normal in the Arctic by 2045 and even Antarctica could reach the normal levels by 2066. These promising changes are the result of efforts on a global scale to reduce ozone depletion. International cooperation has achieved overall reductions in substances that threaten this very vital layer. Let’s have a closer look.

From Ozone Depletion to Recovery

The ozone hole over Antarctica discovery dating back to the late 20th century really rang an alarm globally. The chemicals, like CFCs (chlorofluorocarbon-11) used in aerosols and refrigeration, deplete the ozone layer. In depletion of the ozone layer, life on Earth exposed to an increased level of ultraviolet radiation that causes health risks like skin cancer and cataracts.

Ozone Layer Is Healing
A diagram of how the ozone layer works. Photo Shutterstock

The international community realized it was a crisis. In 1987, most nations signed an agreement called the Montreal Protocol to limit and work to phase out the production of substances that harm the ozone layer. With this in place, a collective effort has seen these chemicals fall off significantly, and according to the United Nations Environment Programme, the ozone layer is currently on track to recover to its 1980 level by the middle of the century.

Ozone Layer Is Healing
This image released on December 1, 2009, shows a combination of two images released by the Nasa Earth Observatory showing the size and shape of the ozone hole in 1979 (L) and in 2009. Photo: Nasa/AFP

Ozone Layer Is Healing

A healing ozone layer does not just mean that the ultraviolet rays are blocked. Rather, it plays an important role in mitigating Global Warming: most substances in the ozone-depleting category are potent greenhouse gases. With fewer chemicals, we have reduced their impact on climate change.

Ozone Layer Is Healing
In this NASA false-color image, blue and purple shows the hole in Earth’s protective ozone layer over Antarctica on Oct. 5, 2022. Earth’s protective ozone layer is slowly but noticeably healing at a pace that would fully mend the hole over Antarctica in about 43 years, a new United Nations report says.

“That ozone recovery is on track according to the latest quadrennial report is fantastic news. The impact the Montreal Protocol has had on climate change mitigation cannot be overstressed. Over the last 35 years, the Protocol has become a true champion for the environment. The assessments and reviews undertaken by the Scientific Assessment Panel remain a vital component of the work of the Protocol that helps inform policy and decision makers.”

Meg Seki, Executive Secretary of the United Nations Environment Programme’s Ozone Secretariat

Recovery of the ozone layer may further imply atmospheric circulations for more stable climate systems, hence a reduction in extreme weather events. Research published on Earth.org shows that studies in reducing ozone-depleting substances indicate a positive trend for climate change mitigation and ozone recovery trend that could probably avoid another 0.5°C of global warming by 2100. This impact adds immensely to our contributions toward limiting temperature increases and, therefore, global warming.

The extent of ozone depletion in 2019 was the smallest in almost 40 years of satellite records and observations. (Source: NASA Earth Observatory Image, developed from data gathered by NASA Ozone Watch and Global Modelling and Assimilation Office)

The Role of the Montreal Protocol to Protect Ozone Layer

The recovery of the ozone layer is one of the major successes of the Montreal Protocol. This international treaty consolidated the efforts of nations into one spirit to reduce and eventually eliminate ozone-depleting gases. Its implementation has shown the effectiveness of joint ventures for environmental change.

Image source: Yale School of the Environment

Moreover, the Montreal Protocol also serves as a precedent for subsequent environmental agreements. It serves to prove that through cooperation, states are able to tackle any global challenge posed upon them. As noted the, the realization of the protocol has served in changing the trend of ozone depletion. The optimism offered by this Agreement enables its condition to replicate the same in other environmental problems such as climate change.

Ensuring the Ozone Layer Continues Healing

While the ozone layer is recuperating, vigilance is not over. Illicit production and using banned substances still pose a threat to setting back the process. It will be necessary to monitor and comply with international agreements. This is to ensure that no any backwards steps are taken in the recovery of the ozone layer.

Maximum ozone hole extent over the southern hemisphere, from 1979 to 2023 | Image source: European Environment Agency
Southern Hemisphere ozone hole area| Image source: European Environment Agency

Scientists will develop other chemicals, not yet regulated, that might impact the ozone layer. Researchers and policymakers must revise policies to address these growing hazards. In this respect, continual research and policy updates will renew the healing of the ozone layer to act as a life-protective agent on Earth.

Conclusion

This serves to show that the ozone layer is healing, an environmental conservation aspect that has given hope. The success is an indication of what can be done through global cooperation with specific actions taken against a major threat. In dealing with the problem of ozone depletion, we have managed to repair an important component of our atmosphere. We have also taken giant strides toward addressing the problems of global warming.

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