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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-24 9:13 |
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Conference: Bucharest University Faculty of Physics 2008 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Estimations of regional scale ambient concentrations and depositions of atmospheric pollutants
Authors:
A. Deneanu(1), G. Mocioaca(2), D.Zisu(1), A. Dragomir(1), C. Raicu(1), C. Suciu(1)
Affiliation:
(1) National R&D Institute for Environmental Protection – ICIM Bucharest, Romania,
(2) AMEC Earth & Environmental Ltd., Romania
E-mail
e-mail alin.deneanu@icim.ro
Keywords:
pollutant emission inventory,EMEP (European Monitoring and Evaluation Programme) grid
Abstract:
Estimations of air ambient concentrations and depositions at regional scale represent a very difficult task due to the complicated chemical and physical processes involved. These imply, on one hand, the development of a detailed air pollutant emission inventory at the national level and, on the other hand, the applications of regional scale dispersion models able to include sophisticated transport and deposition schemes. This paper focuses on the results for national SO2 and NOx air emission assessment and distribution in the EMEP (European Monitoring and Evaluation Programme) grid and also for air quality assessment and deposition of these pollutants at national level. The national emissions inventory was based on data on stationary point sources, traffic as a linear source and area sources. National emissions were distributed in 150 x 150 km, respectively 50 x 50 km, in compliance with EMEP requirement. The assessment of concentrations and depositions for the acidifying air pollutants at national level was based on numerical dispersion modelling. The Air Pollution Model (TAPM) developed by CSIRO Australia has been applied by using a nested procedure with a 1500 km x 1140 km outer grid (20 km resolution) scaling down to 750 km x 570 km on an inner grid (10 km resolution) that covers the entire country. The air ambient concentration is estimated by using photochemical schemes based on Generic Reaction Set of Azzi et al (1992) and a deposition schemes based on the resistance method. The results include the spatial distribution of air ambient concentrations for NO2 and SO2 as well as dry and wet deposition at the national level. The estimated deposition levels obtained by model are fairly well reproducing the magnitudes and distributions generated by the EMEP models in 2004.
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