Ozone - Revision history

Designing Buildings at 07:16, 23 April 2025

2025-04-23T07:16:41Z

← Older revision		Revision as of 07:16, 23 April 2025
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	* Construction 2025.		* Construction 2025.
	* Deleterious materials.		* Deleterious materials.
		+	* Dobson unit.
	* Greenhouse gases.		* Greenhouse gases.
	* Montreal Protocol.		* Montreal Protocol.

Designing Buildings at 06:13, 6 April 2022

2022-04-06T06:13:03Z

← Older revision		Revision as of 06:13, 6 April 2022
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	For more information see: Ozone depleting substances.		For more information see: Ozone depleting substances.
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		+	NB The [https://stats.oecd.org/glossary/ glossary of statistical terms], published by the Organisation for Economic Co-operation and Development (OECD), defines ground-level ozone as: ‘…ozone present as a secondary pollutant in the lower atmosphere, where its formation can be enhanced by other pollutants. It is highly toxic at levels above 0.1 parts per million (p.p.m.).’

	= Related articles on Designing Buildings =		= Related articles on Designing Buildings =

Designing Buildings: Created page with "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 ultraviole..."

2021-12-15T10:26:38Z

Created page with "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 ultraviole..."

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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.

= Related articles on Designing Buildings =

* BREEAM Impact of refrigerants.
* Climate change act.
* Construction 2025.
* Deleterious materials.
* Greenhouse gases.
* Montreal Protocol.
* Ozone depleting substances.
* R22 phase out.
* R404A phase out.
* Refrigerant.
* Refrigerant selection.
* SF6 - the greenhouse gas at the heart of our industry.

[[Category:DCN_Definition]] [[Category:Definitions]] [[Category:History]]