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Home » According To NOAA, Harmful Chemicals In The Ozone Layer Have Decreased By 50%

According To NOAA, Harmful Chemicals In The Ozone Layer Have Decreased By 50%

Ozone layer
Southern Hemisphere ozon levels

For a while, humanity was greatly impacted by the ozone layer’s depletion. The International Day for the Preservation of the Ozone Layer was also recognised by the UN in 1994.

The ozone layer in the stratosphere protects all life on Earth from UV radiation. Therefore, the Ozone Layer is essential for all living forms, and we must protect it without a doubt.

The most recent report from the National Oceanic and Atmospheric Administration (NOAA) shows that we’re headed in the right direction.

As they stated, NOAA found that global concentrations of the hazardous chemicals that deplete the ozone layer have reduced by little over 50% to levels recorded in 1980 in the mid-latitude stratosphere. The steady decline “shows the threat to the ozone layer dropping below a key milestone in 2022,” according to the study.

Tens of millions of tonnes of ozone would be required to completely fill the ozone hole above Antarctica, which is larger than area of the United States. Even shipping this much ozone would be extremely expensive.

According to NOAA, the Montreal Protocol on Compounds that Deplete the Ozone Layer limits production and sale of ozone-depleting substances. This compliance has allowed for modest but steady development over the past three decades.

Over Antarctica, where there is a major ozone hole in the spring, ozone-depleting chemicals (ODSs) have been falling more slowly recently.

Stephen Montzka, senior scientist for NOAA’s Global Monitoring Laboratory, said: “It’s amazing to see this improvement.

But it’s also a little depressing to understand that science is still a long way from being able to say that the ozone depletion problem is resolved.

How did it start?

Ozone is a chemical that reacts quickly. The stratosphere, which is located above the troposphere, the layer closest to Earth’s surface, contains around 90% of the earth ozone.

Scientists have been closely monitoring the atmosphere ever since it was discovered that some synthetic compounds were “seriously damaging” the ozone layer in the 1980s.

The Montreal Protocol, a treaty to control chemicals for the protection of Earth, was accepted by every country on Earth for the first time ever in 1987, just seven years after the ozone depletion caused by chemicals was made most visible.

It’s a long but promising road

For a variety of reasons, but mostly because the air in the Antarctic stratosphere is older than that over the mid-latitudes, the ozone layer over the Antarctic has not recovered as quickly as it has over the mid-latitudes, declining by 26% from high levels in the 1990s.

The Antarctic 2022 index has dropped 26% from peak levels in the 1990s, and it is predicted that the Antarctic ozone layer will recover somewhere around 2070.

1985 was crucial for the Ozone Layer

A multilateral environmental agreement called the Vienna Convention for the Protection of the Ozone Layer was made in 1985 and established rules for reducing the production of chlorofluorocarbons worldwide because of their contribution to the ozone layer’s destruction and the subsequent increase in the risk of skin cancer.

The convention’s history began in the 1970s. Research conducted in the 1970s showed that man-made chlorofluorocarbons (CFCs) in the atmosphere decreased & converted ozone molecules.

The threats of ozone depletion have propelled the issue to the forefront of global climate issues, garnering support from organizations such as the World Meteorological Organization and the United Nations. The Vienna Convention was adopted at the Vienna Conference in 1985 and came into effect in 1988.

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