Scientists warn about size of Antarctic ozone hole

ozone hole over Antarctic has reached its 2020 peak and is one of largest holes of recent years, World Meteorological Organization (WMO) anunced Tuesday at United Nations in Geneva.  finding is based on observations by European Union's Copernicus Atmospheric Monitoring Service

Each year in August, at start of Antarctic Spring, ozone hole begins to grow and reaches its peak around October. Ozone depletion over Antarctic continent was first spotted in 1985.

Over last 35 years, various measures have been introduced to reduce hole, including   Montreal Protocol on Substances that Deplete ozone Layer, an international treaty designed to protect ozone layer by phasing out production of numerous substances that are responsible for ozone depletion.

As a result, ozone layer over Antarctica is slowly recovering, but Spokesperson for World Meteorological Organisation (WMO), Clare Nullis said that "we cant be complacent". Despite growing hole, experts are confident that since restrictions on ozone-destroying halocarbons was introduced via Montreal Protocol, hole has slowly been recovering.

Climate projections indicate that ozone layer will return to 1980 levels in 2060. Ozone depletion relies on extremely cold temperatures. refore, colder temperature in stratosphere over Antarctica, bigger ozone hole. Scientists are predicting that ozone hole in spring will become smaller and recover as a seasonal event.

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