The ozone layer hole is expected to close in the next 50 years, according to the National Oceanic and Atmospheric Administration (NOAA) in the United States. Scientists from NOAA found that, compared to the 1980s, concentrations of hazardous chemicals had decreased by just over 50% in the mid-level of the stratosphere, which they described as a “significant milestone” on the path to recovery.
The Antarctic ozone layer could eventually recover sometime around 2070
The Antarctic ozone layer, which protects all life on Earth from the sun’s harmful radiation, could eventually recover “sometime around 2070,” according to NOAA.
Every year, around spring in the Southern Hemisphere, a massive hole starts to emerge as a result of intricate climatic and chemical processes. The hole often starts to form during spring in the Southern Hemisphere, and it is being monitored by the Copernicus Atmosphere Monitoring Service (CAMS). Since the end of August, CAMS scientists have closely followed the hole’s growth using three-dimensional modeling.
The size of the hole is within the average range
According to the Director of the CAMS Vincent-Henri Peuch, “The 2022 Antarctic ozone hole started to develop in late August and has so far followed similar trends from the last decade in terms of area, minimum total column, mass deficit, and minimum temperature.”
“According to our data from the start of September, the size of the ozone hole is within the average range. However, we will be watching very closely in the next few weeks as the 2020 and 2021 ozone holes only started to become exceptional later on.”
Just seven years after scientists found man-made chemicals were harming the ozone layer, the Montreal Protocol was signed in 1987 to attempt and reduce the number of hazardous substances in the atmosphere. These chemicals have begun to be phased out in order to safeguard the ozone layer under one of the first accords ever to be widely accepted in United Nations history.
