The Relationship Between Total Suspended Particulate Matter (TSP) and British Smoke Measurements in London: Development of a Simple Model |
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| Authors: | David T Mage |
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| Institution: | U.S. Environmental Protection Agency , Research Triangle Park , North Carolina , USA |
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| Abstract: | Abstract This article develops an empirical relationship between the British Smoke (BS) measurement, coefficient of haze (CoH), and Total Suspended Particulate Matter (TSP) for London winter periods of the early 1950s and 1960s. A bounded nonlinear model of form BS = TSP3 / (TSP2 + 200 μg/m3]2 ) fits the available BS/TSP data and meets the urban boundary conditions that BS→0 as TSP→ 0, and BS→ TSP as TSP→∞. A derivation is presented for the form of the equation from basic principles. Equations of a similar form may be useful on a site- and season-specific basis for developing relations between other fractions of PM. |
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