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Title: BACKGROUND CONCENTRATION OF AIR POLLUTANTS FOR SOFIA CITY – ANALYSIS FOR SUMMER AND WINTER MONTHS
BACKGROUND CONCENTRATION OF AIR POLLUTANTS FOR SOFIA CITY – ANALYSIS FOR SUMMER AND WINTER MONTHS

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Hristina Kirova; Dimiter Syrakov; Maria Prodanova; Emilia Georgieva; Dimiter Atanassov
10.5593/sgem2022/4.1/s19.36
10.5593/sgem2022/4.1
1314-2704
978-619-7603-44-6
English
22
4.1
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Air Pollution and Climate Change
The air pollution in many Bulgarian cities is of concern mainly due to high concentration of particulate matter (PM). Poor air quality has adverse health effects and is responsible for premature deaths and life loss. According to the World Health Organization air pollution remains the single largest environmental health risk in Europe. Additionally, negative effects of urban air pollution can be detected on buildings, cultural heritage, vegetation, biodiversity, etc.
Air pollutant concentrations in the city depend on processes occurring on different temporal and spatial scale and reflect contribution from distant and local emission sources. At a single point in the city the pollutants concentrations can be regarded as superposition of natural background values, regional background and city increment contribution consisting of urban background and street level values. Background values are critical components of the total air quality concentrations and their estimation is important for defining appropriate abatement measures at national, regional and local level.
The objective of this work is to present and discuss background concentrations of key pollutants (PM, NO2, SO2 and ozone) for the city of Sofia for one summer and one winter month of 2021. These concentrations are estimated by the Bulgarian Chemical Weather Forecasting System (BgCWFS) [1-3], based on WRF-CMAQ models. The results analysed are for domain Sofia (30 x 27 grid points) with 1 km resolution. The concentrations for this domain can be considered as regional background for the city of Sofia. We discuss the spatial monthly distributions of the key pollutants and the variability across the city and present domain mean concentrations for the two months. The relationship to some meteorological variables (wind speed, temperature, mixing height) is also discussed.
[1] Syrakov D., Prodanova M., Slavov K., Etropolska I., Ganev K., Miloshev N., Ljubenov T., Bulgarian System for Air Pollution Forecast, J. Inter. Sci. Publications ECOLOGY & SAFETY,7/1, ISSN: 1313-2563, pp.325-334, 2013a.
[2] Syrakov D., Etropolska I., Prodanova M., Slavov K., Ganev K., Miloshev N., Ljubenov T., Downscaling of Bulgarian Chemical Weather Forecast from Bulgaria region to Sofia city, American Institute of Physics, Conf. Proc., 1561, pp. 120-132, 2013b.
[3] http://info.meteo.bg/cw2.2/
[4] Moussiopoulos, N. (Ed.) Air Quality in Cities; SATURN—EUROTRAC 2 Subproject Report; Springer: Berlin/Heidelberg, Germany, 2003.
[5] Chevalier A., Gheusi F., Delmas R., Ordonez C., Sarrat C., Zbinden R., Thouret V., Athier G., Cousin J.-M., Influence of altitude on ozone levels and variability in the lower troposphere: a ground-based study for western Europe over the period 2001– 2004, Atmos. Chem. Phys., 7, 2007, pp 4311–4326.
[6] Tassev Y., Assenovski S., Donev E., Ivanov D., Danchovski V., Comparative Analysis of Ground Level Ozone Distribution in Sofia and Plana Mountain during 2007 – 2009. Compt. Rend. Acad. Bulg. Sci., 63, 10, 2010, pp 1521-1532.
The present study was performed in the frame of the INNOAIR project ("Innovative demand responsive green public transportation for cleaner air in urban environment"), funded by Urban Innovative Action programme of the European Union, contract UIA05-202.
conference
https://doi.org/10.5593/sgem2022/4.1/s19.36
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Proceedings of 22nd International Multidisciplinary Scientific GeoConference SGEM 2022
22nd International Multidisciplinary Scientific GeoConference SGEM 2022, 04 - 10 July, 2022
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Turkish Acad Sci.
279-286
04 - 10 July, 2022
website
8606
air quality, regional background, chemistry transport model, urban area