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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:26 |
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Conference: Bucharest University Faculty of Physics 2012 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Study of the spatial and temporal variability of the aerosol concentration and chemical composition in the urban areas
Authors:
Georgiana GRIGORAS(1,2), Mihaela MIRCEA(3), Massimo D’ISIDORO(3), Lina VITALI(3), Irene CIONNI(3), Gino BRIGANTI(4), Andrea CAPPELLETTI (4), Sandro FINARDI(5), Giandomenico PACE(6), Luisella CIANCARELLA(3), Giuseppe CREMONA(3), Antonio PIERSANTI(3), Gaia RIGHINI(3) and Gabriele ZANINNI(3)
Affiliation:
(1)University of Bucharest – Faculty of Physics, P.O.Box MG-11, Bucharest, Romania.
(2)National Institute for Research and Development in Environment Protection, 294 Splaiul Independentei, 6th District, 060031, Bucharest, Romania.
(3)ENEA – Technical Unit Models, Methods and Technologies for the Environmental Assessment, Bologna Research Centre, Italy.
(4)ENEA – Technical Unit Models, Methods and Technologies for the Environmental Assessment, Pisa Research Centre, Italy.
(5)Arianet s.r.l., via Gilino 9, 20128 Milano, Italy.
(6)ENEA – Technical Unit Environmental and Energy Modeling, Casaccia Research Centre, Italy.
E-mail
grigoras.georgiana@gmail.com
Keywords:
atmospheric aerosol, chemical composition, atmospheric modeling
Abstract:
The aim of this paper is to study the spatial and temporal variability of aerosol concentrations and chemical composition in urban areas of Italy for the year 2007. In order to achieve this objective, results of the simulations with the Air Quality Modelling System (AMS) of Italian MINNI project were used. The annual and seasonal analyses were conducted at urban and suburban stations located in different cities from different regions of Italy, using results of simulations with 20km x 20km and 4km x 4km horizontal grid resolutions. The results of the simulationss were compared with measurements from BRACE database (Italian National Network of Air Quality Monitoring) and from the EMEP stations, Ispra and Montelibretti. Statistical parameters used for model validation indicate good results for stations located in northern Italy (correlation coefficient up to 0.7 for PM10). Seasonal analysis indicates higher correlations in autumn and spring (over 0.7) than in winter and summer (0.6 respectively 0.5). Regarding the concentrations of chemical species contained in the PM2.5 aerosol fraction, good correlations with values between 0.4 (for NH4) and 0.59 (for SO4) were obtained.
Note:Georgiana Grigoras was supported by the University of Bucharest, through the POSDRU/88/1.5/S/56668 Project, cofinanced by the European Social Found within the Sectorial Operational Program for Human Resources Development 2007 – 2013.
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