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2-D model of global aerosol transport

Journal Article:

Abstract

The distribution of aerosol particles in the troposphere is described. Starting with long term mean seasonal flow and diffusivities as well as temperature, cloud distribution (six cloud classes), relative humidity and OH radical concentration, the steady state concentration of aerosol particles and SO/sub 2/ are calculated in a two-dimensional global (height and latitude) model. The following sources and sinks for particles are handled: direct emission, gas-to-particle conversion from SO/sub 2/, coagulation, rainout, washout, gravitational settling, and dry deposition. The sinks considered for sulphur emissions are dry deposition, washout, rainout, gasphase oxidation, and aqueous phase oxidation. Model tests with the water vapour cycle show a good agreement between measured and calculated zonal mean precipitation distribution. The steady state concentration distribution for natural emissions reached after 10 weeks model time, may be described by a mean exponent ..cap alpha.. = 3.2 near the surface assuming a modified Junge distribution and an increased value, ..cap alpha.. = 3.7, for the combined natural and man-made emission. The maximum ground level concentrations are 2000 and 10,000 particules cm/sup -3/ for natural and natural plus man-made emissions, respectively. The resulting distribution of sulphur dioxide agrees satisfactorily with measurements given by several authors. 37 references, 4 figures.
Publication Date:
Jan 01, 1984
Product Type:
Journal Article
Reference Number:
ERA-10-021651; EDB-85-062069
Resource Relation:
Journal Name: Atmos. Environ.; (United Kingdom); Journal Volume: 18:12
Subject:
54 ENVIRONMENTAL SCIENCES; AIR POLLUTION; ENVIRONMENTAL TRANSPORT; SULFUR DIOXIDE; AEROSOLS; GLOBAL ASPECTS; MATHEMATICAL MODELS; PARTICULATES; POLLUTION SOURCES; TROPOSPHERE; TWO-DIMENSIONAL CALCULATIONS; CHALCOGENIDES; COLLOIDS; DISPERSIONS; EARTH ATMOSPHERE; MASS TRANSFER; OXIDES; OXYGEN COMPOUNDS; PARTICLES; POLLUTION; SOLS; SULFUR COMPOUNDS; SULFUR OXIDES; 500200* - Environment, Atmospheric- Chemicals Monitoring & Transport- (-1989)
OSTI ID:
5873250
Research Organizations:
Max-Planck-Institut fuer Meterologie, Hamburg, West Germany
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: ATENB
Submitting Site:
HEDB
Size:
Pages: 2745-2752
Announcement Date:

Journal Article:

Citation Formats

Rehkopf, J, Newiger, M, and Grassl, H. 2-D model of global aerosol transport. United Kingdom: N. p., 1984. Web.
Rehkopf, J, Newiger, M, & Grassl, H. 2-D model of global aerosol transport. United Kingdom.
Rehkopf, J, Newiger, M, and Grassl, H. 1984. "2-D model of global aerosol transport." United Kingdom.
@misc{etde_5873250,
title = {2-D model of global aerosol transport}
author = {Rehkopf, J, Newiger, M, and Grassl, H}
abstractNote = {The distribution of aerosol particles in the troposphere is described. Starting with long term mean seasonal flow and diffusivities as well as temperature, cloud distribution (six cloud classes), relative humidity and OH radical concentration, the steady state concentration of aerosol particles and SO/sub 2/ are calculated in a two-dimensional global (height and latitude) model. The following sources and sinks for particles are handled: direct emission, gas-to-particle conversion from SO/sub 2/, coagulation, rainout, washout, gravitational settling, and dry deposition. The sinks considered for sulphur emissions are dry deposition, washout, rainout, gasphase oxidation, and aqueous phase oxidation. Model tests with the water vapour cycle show a good agreement between measured and calculated zonal mean precipitation distribution. The steady state concentration distribution for natural emissions reached after 10 weeks model time, may be described by a mean exponent ..cap alpha.. = 3.2 near the surface assuming a modified Junge distribution and an increased value, ..cap alpha.. = 3.7, for the combined natural and man-made emission. The maximum ground level concentrations are 2000 and 10,000 particules cm/sup -3/ for natural and natural plus man-made emissions, respectively. The resulting distribution of sulphur dioxide agrees satisfactorily with measurements given by several authors. 37 references, 4 figures.}
journal = {Atmos. Environ.; (United Kingdom)}
volume = {18:12}
journal type = {AC}
place = {United Kingdom}
year = {1984}
month = {Jan}
}