Ozone
Ozone (O3) is the triatomic form of oxygen. It is a gaseous atmospheric constituent.
The ozone layer is a layer of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. It is mainly found in the lower portion of the stratosphere, from approximately 15 to 35 kilometres above Earth.
Ozone depleting substances are man-made chemicals that damage the ozone layer. They have contributed to the formation of the 'ozone hole' over the Antarctic.
The emissions of ozone depleting substances increased in the middle to late 20th century, linked to the use of chemicals such as Chlorofluorocarbons (CFCs) in refrigeration, industrial cleaning, foam blowing and air conditioning.
As a result of the threat of increased ozone depletion, an international agreement was formulated in 1987, known as the Montreal Protocol on Substances that Deplete the Ozone Layer, to reduce the worldwide use of ozone depleting substances.
For more information see: Ozone depleting substances.
[edit] Related articles on Designing Buildings
Featured articles and news
How Islamic architecture shaped Europe. Book review.
The campaign to preserve a rare blacksmith bridge.
Transitional options for the next generation of heating technologies.
Government funds autism framework
Additional support being offered to job seekers with autism.
Six ways to help our children learn.
The Illustrated Guide to Renewable Technologies
BSRIA adds to its series of illustrated guides.
ECA calls for energy levy reform.
Recognising the Chartered Infrastructure Engineer
ICE considers creation of new professional designation.
Principles of conservation for bronze objects. Book review.
The untapped potential of charities, community organisations and social enterprises.