WMO revives ozone-UV bulletin after 7 years, shows steady recovery of ozone layer

Source: The post is based on the articleWMO revives ozone-UV bulletin after 7 years, shows steady recovery of ozone layerpublished in Down To Earth on 3rd July 2023

What is the News?

The World Meteorological Organization (WMO) has released Ozone and UV Bulletin after a gap of seven years.

What are the key highlights from the Ozone and UV Bulletin?

Steady recovery of ozone layer: The production and consumption of controlled ozone-depleting substances have been phased out up to 99%. This has happened due to the Montreal Protocol and its amendments.

– Stratospheric ozone is slowly recovering, with a full recovery in most parts of the atmosphere projected to occur in the coming decades.

– However, unfortunately, climate change is slowing down the recovery of the ozone layer. Ozone depletion is affecting the climate of the lower atmosphere.

Hunga Tonga-Hunga Ha’apai volcanic eruption changed the stratosphere: The Hunga Tonga-Hunga Ha’apai volcanic eruption in January 2022 was the largest in the last 100 years, injecting ice and water vapor high into the stratosphere.

– The eruption increased the water vapor content of the stratosphere by 5% to 10%, resulting in substantial cooling of the stratosphere above the Southern Hemisphere.

– The additional water vapor has resulted in less ozone in the lower stratosphere of the Southern Hemisphere in 2022. 

What is an Ozone Layer?

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