Please use this identifier to cite or link to this item: http://openlibrary.ge/handle/123456789/9568
Title: Numerical Modeling of PM2.5 Propagation in Tbilisi Atmosphere in Winter. I. A Case of Background North Light Wind
Authors: Institute of Hydrometeorology at the Georgian Technical University,Tbilisi, Georgia
Mikheil Nodia Institute of Geophysics of Ivane Javakhishvili Tbilisi State University, Tbilisi, Georgia
Surmava, A.
Kukhalashvili, V.
Intskirveli, L.
Gigauri, N.
Mdivani, S.
Keywords: Natural Disasters in the 21st Century: Monitoring, Prevention, Mitigation;Proceedings;PM2.5 concentration;atmosphere pollution;numerical modeling
Issue Date: 2021
Citation: International Scientific Conference „Natural Disasters in the 21st Century: Monitoring, Prevention, Mitigation“. Proceedings, ISBN 978-9941-491-52-8, Tbilisi, Georgia, December 20-22, 2021. Publish House of Iv. Javakhishvili Tbilisi State University, Tbilisi, 2021, pp. 68 - 73.
Abstract: PM2.5 propagation at Tbilisi territory in winter period in case of background north light wind is numerically modeled and analyzed through combined integration of 3D regional model of atmospheric processes evolution and equation of admixtures transfer-diffusion. Motor transport moving at city streets and trunk lines is a main source of atmosphere pollution. There are investigated the main peculiarities, which characterize the process of microaerosols spatial distribution under rugged terrain conditions. PM2.5 high concentration zones are established at the territory of city, time intervals, when high air pollution forms or air self-purification takes place, are determined. Temporal and spatial variations of PM2.5 concentration in the lower part of atmospheric boundary layer are studied. It is established that 25 mkg/m3 and higher concentration is obtained from 11AM to 1PM and from 7PM to 10PM in the surroundings of Ponichala situated in the eastern part of the city.
URI: http://openlibrary.ge/handle/123456789/9568
Appears in Collections:International Scientific Conference „Natural Disasters in the 21st Century: Monitoring, Prevention, Mitigation“ - (2021)

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