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AIR POLLUTION INDEX [1 record]
Record 1 - internal organization data 1999-05-14
Record 1, English
Record 1, Subject field(s)
- Anti-pollution Measures
Record 1, Main entry term, English
- air pollution index
1, record 1, English, air%20pollution%20index
correct
Record 1, Abbreviations, English
- API 2, record 1, English, API
correct
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
An arbitrary function of the concentration of one or more pollutants that is taken as a measure of the severity of pollution. For example, the following index has been used in the USA: 10 times the SO2 concentration plus de CO concentration (both in ppm by volume) plus twice the coefficient of haze. It was considered to be a cause for alarm when the value of this index rose from its average of about 12 to 50 or more. Several such indices are used, but none has more than local use, nor has any been found fully satisfactory. 3, record 1, English, - air%20pollution%20index
Record number: 1, Textual support number: 1 OBS
Not to be confused with AQI (Air Quality Index). 4, record 1, English, - air%20pollution%20index
Record 1, French
Record 1, Domaine(s)
- Mesures antipollution
Record 1, Main entry term, French
- indice de pollution atmosphérique
1, record 1, French, indice%20de%20pollution%20atmosph%C3%A9rique
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 OBS
indice : Indication numérique choisie pour représenter un phénomène complexe, une situation ou les caractéristiques d'un produit. 2, record 1, French, - indice%20de%20pollution%20atmosph%C3%A9rique
Record number: 1, Textual support number: 2 OBS
En matière de pollution atmosphérique, il est possible de caractériser le niveau de pollution correspondant à un polluant défini par sa concentration dans l'atmosphère. Cependant, lorsque plusieurs polluants sont présents simultanément, ce qui est généralement le cas, il devient assez compliqué d'associer à chacun d'eux sa concentration pour caractériser la situation. Des chercheurs ont tenté de définir des «indices de pollution» qui sont en général des combinaisons linéaires des concentrations des principaux polluants affectées de coefficients numériques choisis de telle sorte que les différents polluants soient pondérés les uns par rapport aux autres. 2, record 1, French, - indice%20de%20pollution%20atmosph%C3%A9rique
Record number: 1, Textual support number: 3 OBS
Ne pas confondre l'indice de pollution de l'air avec l'indice de la qualité de l'air; ce dernier désigne le niveau d'un polluant donné qu'on juge dangereux pour la santé. 3, record 1, French, - indice%20de%20pollution%20atmosph%C3%A9rique
Record 1, Spanish
Record 1, Textual support, Spanish
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