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Publish Date: 6 January 2021
The record-breaking 2020 Antarctic ozone hole finally closed at the end of December after an exceptional season due to naturally occurring meteorological conditions and the continued presence of ozone depleting substances in the atmosphere.
Publish Date: 16 September 2020
This year, the world marks the 35th anniversary of the world’s most successful environmental agreement which has enabled the gradual recovery of the Earth’s protective ozone layer.
Publish Date: 1 May 2020
Depletion of the ozone layer, the shield that protects life on Earth from harmful levels of ultraviolet radiation, reached an unprecedented level over large parts of the Arctic this spring. This phenomenon was caused by the continuing presence of ozone-depleting substances in the atmosphere and a very cold winter in the stratosphere (the layer of the atmosphere between around 10 km and round 50 km altitude).
Publish Date: 16 September 2019
On this year’s International Day for the Preservation of the Ozone Layer, WMO highlights the coordinated efforts to measure and analyze ozone layer through its Global Atmosphere Watch network in support of environmental policy.
Publish Date: 12 April 2019
WMO’s Global Atmosphere Watch (GAW) Programme is marking its 30th anniversary this year. The programme, which embraces about 100 countries, aims at forging an integrated global understanding of atmospheric composition and change. It coordinates observations across local to global scales, driving high quality and high-impact science while co-producing society relevant products and services.
Publish Date: 28 February 2019
Increasing levels of airborne pollutants deposited either through gravity (i.e. free-falling) or washed out by rain can result in detrimental effects to crops, human health and vulnerable ecosystems by altering critical and delicate chemical balances. Identifying areas most at risk and which would most benefit from measures to control excessive pollutant load is crucial.
Publish Date: 8 February 2019
The full Scientific Assessment of Ozone Depletion is now available. It shows that actions taken under the Montreal Protocol have led to decreases in the atmospheric abundance of controlled ozone-depleting substances (ODSs) and the start of the recovery of stratospheric ozone.
Publish Date: 5 November 2018
The latest Scientific Assessment of Ozone Depletion reveals a healing ozone layer, global warming reduction potential, and options for more ambitious climate action.