Sentences with phrase «ozone depleting chemicals while»

• The Montreal Protocol is hailed as the most successful multilateral environmental treaty having rid the world of 97 % of ozone depleting chemicals while providing extra time and technical and financial assistance to developing countries.

Not exact matches

While ozone - depleting chemicals are still playing a role, natural factors, such as stratospheric circulation, also helped drive this year's widespread thinning.

``... While [ozone depleting substance] ODS levels remain high, a large stratospheric sulfuric aerosol enhancement due to a major volcanic eruption or geoengineering activities would result in a substantial chemical depletion of ozone over much of the globe.»

While atmospheric levels of ozone - depleting chemicals were rapidly increasing before the Protocol was ratified, emissions of nearly all of these chemicals have declined substantially and atmospheric levels of most of these gases have decreased in the intervening 2 decades.

But the US has improved air quality in ways in which the benefits greatly exceed the costs and replaced ozone - depleting chemicals, all while the economy has grown.