| One project they have planned is the ultra-sensitive detection of short-lived atmospheric species that control photochemical smog formation. |
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| In summer the city suffers high levels of photochemical smog, and in winter high levels of haze are common. |
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| Residents are exposed to photochemical smog, airborne particles, and alkane hydrocarbons. |
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| The work is directed towards the priority issues of acid rain, toxic chemicals, photochemical smog, and stratospheric ozone. |
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| In the troposphere ozone is a chemical oxidant and major component of photochemical smog. |
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| Ozone at ground level can be manufactured as part of photochemical smog. |
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| Nitrogen oxides, carbon monoxide, and unburned hydrocarbons are the main exhaust pollutants and they are involved in the production of damaging photochemical smog. |
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| Diesel engines also emit large quantities of nitrogen oxides, which react with gasoline fumes to produce photochemical smog when hit by sunlight. |
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| At least two distinct types of smog are recognized: sulfurous smog and photochemical smog. |
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| This will allow ozone, greenhouse effect, photochemical smog and other indices to be published in reports on the environment. |
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| Air pollution produced by gasoline-powered automobiles can combine with other pollutants from industry to form photochemical smog. |
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| The causes of photochemical smog are nitrogen oxides and VOC, which stem from traffic and industries. |
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| Ground level ozone is the major component of photochemical smog, and is not emitted into the atmosphere. |
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| In presence of sunlight, these compounds together with nitrogen oxide contribute to the formation of photochemical smog. |
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| The main priority under air management would be the development of strategies against the formation of photochemical smog. |
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| Exhaust emissions, in addition to contributing to photochemical smog, are associated with a wide range of health problems. |
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| The major environmental significance of VOCs is their contribution to photochemical smog. |
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| These ground-level ozone precursors also contribute to acid precipitation, dry deposition and photochemical smog. |
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| In recent years they have been regarded as hazardous substances that cause pollution, such as photochemical smog, and illness, such as sick house syndrome. |
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| Moreover, reduction of the VOCs that are a source of photochemical smog is also an increasingly serious issue for protecting the environment. |
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| These symptoms can also occur during episodes of photochemical smog. |
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| The foundation financed, among other things, an auditorium, the interdisciplinary Beckman Institute and research on the causes of photochemical smog. |
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| A key component of photochemical smog, ozone is formed by a complex reaction between nitrogen dioxide and hydrocarbons in the presence of sunlight. |
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| The Directive targets a group of products which contribute significantly to the total emissions of VOCs in Europe, which, in turn, contribute to the formation of ground level ozone, also known as photochemical smog. |
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| Ground-level ozone contributes to photochemical smog within and downwind from urban centres, largely due to emissions from vehicles and other combustion processes. |
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| Shorter half-lives are expected under warm, photochemical smog conditions, while much longer half-lives would be expected at latitudes with colder temperatures and shorter sunlit days. |
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| Nitrogen oxides, formed by the burning of fossil fuels, generate photochemical smog. |
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| Photochemical smog is derived from photo-activated vehicular and industrial emissions and primary smog. |
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