How Many Stations Are Required to Estimate the Design alue and the Expected Number of Exceedances of the zone Standard in an Urban Area?
| Autor: | H. S. Javitz, F. L. Ludwig, A. Valdés |
|---|---|
| Rok vydání: | 1983 |
| Předmět: |
geography
Environmental Engineering geography.geographical_feature_category Meteorology Air pollution Expected value medicine.disease_cause Urban area Pollution medicine General Earth and Planetary Sciences Environmental science Air quality index Environmental quality Design values General Environmental Science |
| Zdroj: | Journal of the Air Pollution Control Association. 33:963-967 |
| ISSN: | 0002-2470 |
| DOI: | 10.1080/00022470.1983.10465678 |
| Popis: | A methodology for determining regional ozone design values and the expected number of exceedances is described. The methodology was applied to data bases for one year or less from four U.S. urban areas: Houston, Los Angeles, Philadelphia, and St. Louis. The effects of reducing numbers of stations in a network were tested, and it was concluded that networks of nine or ten appropriately selected stations are adequate for estimating design values. Using the methodology described, the expected number of exceedances tends to be underestimated when using smaller networks; however, this appears to be an artifact of the conservative approach taken in developing the methodology. |
| Databáze: | OpenAIRE |
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