Record-size ozone hole over north pole heals due to polar vortex, scientists confirm

In a big relief to scientists, largest ever hole in ozone layer observed above Arctic has w closed. Copernicus Atmosphere Monitoring Service (CAMS) of European Centre for Medium-Range Wear Forecasts (ECMWF) confirmed development. organisation h been monitoring unusual hole since it was first observed in March 2020.

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CAMS in its report observed that while ozone holes developing over Antarctic in spring have been an annual phemen for some time w, conditions underlying for such strong ozone depletion are t rmal in rrn Hemisphere. Researchers attributed it to temperatures fluctuations as Arctic ozone columns reached record-breaking lows values and severe depletion was recorded at altitudes of about 18 km. 

As per reports, high-altitude currents called polar vortex are responsible for bringing cold air to rth pole and subsequent healing of ozone layer. Scientists have ded that reduced levels of human activities are t responsible for change. 

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Ozone Layer Depletion

Ozone is a colourless gas primarily found in Earth's Stratosphere, forming a protective layer that absorbs harmful ultraviolet rays from sun. ozone layer has been under stress for deces w because of human activities. 

first extreme dam to ozone layer was first observed in 1985 and was called Antarctic ozone hole. It was later ted that man-me chemical compounds called chlorofluorocarbons (CFCs) h caused drop in ozone concentration in Stratosphere.

In 1987, Montreal Protocol was opted to check production and consumption of CFCs which later led to a complete effective ban on chemical compound, putting ozone layer on a path to recovery. However, long-lived CFCs in atmosphere continue to affect ozone levels to this day, as per reports. 

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