PARAMETERIZATION OF BELOW-CLOUD SCAVENGING OF HIGHLY SOLUBLE GASES UNDER CONVECTIVE CONDITIONS

被引：40

作者：

ASMAN, WAH ^{[1
]}

机构：

[1] NETHERLANDS FDN ATMOSPHER CHEM,3507 LG UTRECHT,NETHERLANDS

来源：

ATMOSPHERIC ENVIRONMENT | 1995年 / 29卷 / 12期

关键词：

BELOW-CLOUD SCAVENGING; CLOUD BASE HEIGHT; EVAPORATION; RAINDROP; HIGHLY SOLUBLE GASES; NH3; HCL; H(2)O2; HNO3; N2O5;

D O I：

10.1016/1352-2310(95)00065-7

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A model is developed to compute below-cloud scavenging coefficients during rain of irreversibly soluble gases under convective circumstances. The model takes evaporation of raindrops into account. All results are parameterized as functions of the temperature, relative humidity, rainfall rate at ground level. and diffusivities of the gases at 25 degrees C. Functions are also found for the cloud base height, the smallest drop that can reach the ground and the amount of rain evaporated between the cloud base and the ground. The results are presented in such a way that they can easily be used in atmospheric transport models. Examples are given for NH3, HCl, H2O3, HNO3 and N2O5.

引用

页码：1359 / 1368

页数：10

共 20 条

[1] Andrew, A simple method of measuring gaseous diffusion coefficients, Chem. Engng. Sci., 4, pp. 269-272, (1955)
[2] Asman, Jensen, Processer for våddeposition (Wet deposition processes, in Danish), Report 26 Danish Marine Research Programme 90, (1993)
[3] Asman, Pinksterboer, Verdamping van vallende regendruppels t.b.v. scavengingberekeningen, Internal Report 86-6, (1986)
[4] Beard, Terminal velocity and shape of cloud and precipitation drops aloft, J. atmos. Sci., 33, pp. 851-864, (1976)
[5] Best, The size distribution of raindrops, Quarterly Journal of the Royal Meteorological Society, 76, pp. 16-36, (1950)
[6] Chang, Rain and snow scavenging and HNO<sub>3</sub> vapor in the atmosphere, Atmospheric Environment, 18, pp. 191-197, (1984)
[7] Cussler, Diffusion, Mass Transfer in Fluid Systems, (1984)
[8] Durham, Stockburger, Nitric acid-air diffusion coefficient: experimental determination, Atmospheric Environment, 20, pp. 559-563, (1986)
[9] Feingold, Levin, Tzivion, The evolution of raindrop spectra. Part II: downdraft generation in an axisymmetrical rainshaft model, J. atmos. Sci., 48, pp. 315-330, (1991)
[10] Feingold, Tzivion, Levin, Evolution of raindrop spectra. Part 1: solution to the stochastic collection/breakup equation using the method of moments, J. atmos. Sci., 45, pp. 3387-3399, (1988)

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