The long range transport of airborne material and its removal by deposition and washout—I. General considerations

Scriven, R.A.; Fisher, B.E.A.

doi:10.1016/0004-6981(75)90053-0

Cited by 66 publications

(7 citation statements)

References 14 publications

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“…Following the work of Scriven and Fisher [41], a twodimensional dispersion in the x-z plane is considered, where x is a horizontal coordinate and z a vertical coordinate. If C(x) is the concentration at distance x, the rate at which the contaminant crosses a vertical plane is u(x)H(x)L(x)C(x), where u is the horizontal velocity perpendicular to the plane, H is the height of the plane, L is the lateral extension of the plane and C is the concentration at the plane.…”

Section: Continuous Source Modelmentioning

confidence: 99%

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Toxic gas clouds: Effects and implications of dry deposition on concentration

Jonsson

Karlsson

Thaning

2005

Journal of Hazardous Materials

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Section: Continuous Source Modelmentioning

confidence: 99%

“…The box model type is described in the literature [18,41] and has been used for simulation of long-range transport of pollutants. However, since the gas concentration in box-type models is constant with height, the dry deposition flux may be underestimated for ground-level releases.…”

Section: Dispersion Modelsmentioning

confidence: 99%

Toxic gas clouds: Effects and implications of dry deposition on concentration

Jonsson

Karlsson

Thaning

2005

Journal of Hazardous Materials

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“…where No is the initial amount of the species in the designated volume of air and N(At) is the amount of the species remaining in air after time At. Estimates of the scavenging coefficient and its distributional properties are also needed in analytical and statistical models of concentrations and residence times of soluble pollutants [Junge and Gustafson, 1957;Grandell, 1972, 1981; Scriven and Fisher, 1975;Bolin and Persson, 1975;Henmi and Reiter, 1978; Venkatram et al, 1982;Fisher, 1982Fisher, , 1983.…”

Section: Introductionmentioning

confidence: 99%

Rate of precipitation scavenging of nitrates on central Long Island

Sperber¹,

Hameed²

1986

J. Geophys. Res.

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By comparing deposition of nitrate in successive hours of precipitation samples taken over a six year period at Brookhaven National Laboratory (BNL), Long Island, New York, we have estimated scavenging coefficients in air, λ, for nitrate under a variety of meteorological and seasonal conditions. The square root transformation of the scavenging coefficients λ½ yields an approximately normal distribution; the mean value is 1.1 × 10−4 s−1, in general agreement with previous experimental and theoretical estimates. An interesting property of the distribution of the scavenging coefficients is that the ratio of the mean value of λ½ to its standard deviation varies little from 2.4 for various subsets of data; this property may limit the choice of stochastic models which describe the scavenging process. A trend analysis of the relationship between scavenging coefficients and rainfall rate indicates that the scavenging coefficient of nitrate does not increase for rainfall rates ≤3.2 mm h−1. The indicated increase at greater rainfall rates is qualitatively similar to model predictions but is based upon a small number of data points. The mean scavenging coefficient for winter rain events is greater than for snow.

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“…The solution of the above equation is where No is the initial amount of the species in a designated volume of air. Estimates of the scavenging coefficient and its distributional properties are also required in analytical and statistical models of concentration and residence time of soluble pollutants (Junge and Gustafson, 1957;Grandell, 1972, 1981 ;Scriven and Fisher, 1975;Bolin and Persson, 1975;Henmi and Reiter, 1978;Omstedt and Rodhe, 1978;Venkatram et al, 1982, Fisher, 1982, 1983.…”

Section: Introductionmentioning

confidence: 99%

Estimates of the sulfate scavenging coefficient from sequential precipitation samples on Long Island

Hameed¹,

Sperber²

1986

Tellus B

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By comparing deposition of sulfate in successive hours of precipitation samples taken over a 6 year period at Brookhaven National Laboratory (BNL) on Long Island in New York, we have estimated scavenging coefficients in air for sulfate under a variety of meteorological and seasonal conditions. The scavenging coefficients obtained are underestimated (typically up to 12%) because of liquid phase production of sulfate from SO, scavenged in air. The square root transformation of the scavenging coefficients 1''; yields an approximately normal distribution. An interesting property of the distribution of scavenging coefficients is that the ratios of the mean value of A"* to its standard deviation cluster around the value 2.4; this property may limit the choice of stochastic models which describe the scavenging process. The mean value of the sulfate scavenging coefficient is 1.0 x s-I. A trend analysis of the relationship between the scavenging coefficients and rainfall rate indicates that the sulfate scavenging coefficient is virtually invariant for rainfall rates < 5 mm h-I.

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The long range transport of airborne material and its removal by deposition and washout—I. General considerations

Cited by 66 publications

References 14 publications

Toxic gas clouds: Effects and implications of dry deposition on concentration

Toxic gas clouds: Effects and implications of dry deposition on concentration

Rate of precipitation scavenging of nitrates on central Long Island

Estimates of the sulfate scavenging coefficient from sequential precipitation samples on Long Island

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