Statistical Characteristics of Monthly Mean and Annual Concentrations of Particulate Matter PM2.5 and PM10 in Three Points of Tbilisi in 2017-2022

Main Article Content

Darejan D. Kirkitadze

Abstract

Results of the detailed statistical analysis of the average monthly and annual concentrations of particulate matter PM2.5 and PM10 at three locations in Tbilisi (Kazbegi av., Tsereteli av. and Varketili) in 2017-2022 are presented. An analysis of the correlations between the indicated characteristics of air pollution has been carried out. The variability of the average annual values of PM2.5 and PM10 in the study period of observations was studied. In particular, it was found that in 2020-2021 there was a significant decrease in the average annual concentration of aerosols due to restrictions on the movement of vehicles associated with the covid-19 pandemic. It is noted that for the entire observation period, the average annual concentration of PM2.5 and PM10 was above the permissible norm.

Keywords:
Atmospheric aerosols, particulate matter, PM2.5, PM10
Published: Aug 22, 2023

Article Details

How to Cite
Kirkitadze, D. D. (2023). Statistical Characteristics of Monthly Mean and Annual Concentrations of Particulate Matter PM2.5 and PM10 in Three Points of Tbilisi in 2017-2022. Journals of Georgian Geophysical Society, 26(1). https://doi.org/10.60131/ggs.1.2023.6963
Section
Articles

References

Kirkitadze D., Nikiforov G., Chankvetadze A., Chkhaidze G. Some Results of Studies of Atmospheric Aerosols in M. Nodia Institute of Geophysics in the Recent Three Decades. Trans. of Mikheil Nodia Institute of Geophysics, ISSN 1512-1135, vol. 66, Tbilisi, 2016, pp. 178-185, (in Russian).

Gigauri N.G., Gverdtsiteli L.V., Surmava A.A., Intskirveli L.N. Numerical Simulation of Industrial Dust Distribution in the Territory of Zestafoni, Georgia. WIT Transaction on Ecology and Environment, 230, 2018, pp. 119-128. Doi:10.2495/AIR1180111.

Gigauri N., Pipia M., Beglarashvili N., Mdivani S. Evaluation of the Content of Microparticles in the Atmosphere of Rustavi by Experimental Measurements. International Conference of Young Scientists "Modern Problems of Earth Sciences", Proceedings, ISBN 978-9941-36-044-2, Publish House of Iv. Javakhishvili Tbilisi State University, Tbilisi, November 21-22, 2022, pp. 97-101, (in Georgian).

Kukhalashvili V., Pipia M., Gigauri N., Surmava A., Intskirveli L. Study of Tbilisi City Atmosphere Pollution with PM2.5 and PM10-Microparticles During COVID-19 Pandemic Period. Journal of the Georgian Geophysical Society, e-ISSN: 2667-9973, p-ISSN: 1512-1127, Physics of Solid Earth, Atmosphere, Ocean and Space Plasma, v. 25(2), 2022, pp. 29–37. DOI: https://doi.org/10.48614/ggs2520225958

Gorchakov G.I., Emilenko A.S., Kartsivadze A.I., Metreveli D.M., Sidorov V.N. Variation of Submicron Aerosol Structure. Proc. 9th Int. Conf. on Atmospheric Aerosols, Condensation and Ice Nuclei, Budapest, Hungary, 3-8 September, vol.1, 1984, p. 159-163.

Kharchilava D.F., Lomaia O.V., Bukia G.N. The Conditions of Aerosols Formation and Accumulation in Cities. Proc. 3th Int. Aerosol Conf., Kyoto, Japan, Pergamon, vol. 2, 24-27 September, 1990, p. 986-989.

Styra B., Amiranashvili A. Aerosol Distribution above Georgia Investigations. Institute of Physics of the Academy of Sciences of the Lithunian SSR, Atmospheric Physics, ISSN 0135-1419, vol. 8, Vilnius, Mokslas, 1983, pp. 18-24, (in Russian).

Amiranashvili A.G., Gzirishvili T.G., Kartsivadze A.I., Nodia A.G. Aircraft investigations of the distribution of aerosols in the lower troposphere. Proc. 9th Int. Conf. on Аtmospheric Аerosols, Condensation and Ice Nuclei, Budapest, Hungary, 3-8 September, vol.1, 1984, р. 148-153.

Amiranashvili A.G., Gzirishvili T.G. Aerosols and Ice Crystals in the Atmosphere. Tbilisi, Metsniereba, 1991, 113 p. (in Russian).

Amiranashvili A., Amiranashvili V., Chochishvili K., Kirkitadze D. The Distribution of Aerosols over the Georgian Territory in the Lower Troposphere, Journal of Georgian Geophysical Society, ISSN 1512-1127, Jssue B. Physics of Atmosphere, Ocean and Space Plasma, Vol. 8 B, 2003, Tbilisi, 2004, pp. 70-76.

Amiranashvili A. G. Boleslovas Styra. 105 Years from the Birthday. His Role in the Formation, Development and Modern Evolution of Nuclear Meteorology in Georgia. Journal of Georgian Geophysical Society, ISSN 1512-1127, Jssue B. Physics of Atmosphere, Ocean and Space Plasma, Vol. 20 B, 2017, Tbilisi, 2017, pp. 73-87.

Amiranashvili A., Amiranashvili V., Gzirishvili T., Gunia G., Intskirveli L., Kharchilava J. Variations of the Weight Concentrations of Dust, Nitrogen Oxides, Sulphur Dioxide and Ozone in the Surface Air in Tbilisi. Proc.15th Int. Conf. on Nucleation and Atmospheric Aerosols, Rolla, Missouri, USA, 2000, August, 6-11, AIP, Conference Proc., vol.535, Melville, New York, 2000, p. 793-795.

Amiranashvili A.G., Chikhladze V.A., Kharchilava J.F., Buachidze N.S., Intskirveli L.N. Variations of the Weight Concentrations of Dust, Nitrogen Oxides, Sulphur Dioxide and Ozone in the Surface Air in Tbilisi in 1981-2003, Proc. 16th International Conference on Nucleation&Atmospheric Aerosols, Kyoto, Japan, 26-30 July 2004, pp. 678-681.

Amiranashvili V. Numerical Calculation of the Spectral Aerosol Optical Depth Using Data on Integral Irradiance of the Direct Solar Radiation. Abstr. IUGG 99, 19-30 July 1999, Birmingham UK, p. A.236.

Amiranashvili V. Modelling of Solar Radiation Transfer in the Atmosphere with Allowance to Aerosol Diffusion. J. Aerosol Sci., Vol. 30, Suppl 1, Pergamon Press, 1999, p. S625-S626.

Amiranashvili A., Amiranashvili V., Tavartkiladze K. Dynamics of the Aerosol Pollution of the Atmosphere in Georgia in 1956-1990, J. Aerosol Sci, Pergamon, vol.30, Suppl.1, 1999, S667-S668.

Amiranashvili A., Amiranashvili V., Khurodze T.,Tavartkiladze K.,Tsitskishvili M. Some Characteristics of the Aerosol Pollution of the Atmosphere Over the Territory of Kakheti in the Warm Season, Proc. Int. Conf. Dedicated to Memory of Prof. A. Sutugin, Moscow, Russia, June 26-30, 2000, 128-129.

Amiranashvili A.G., Amiranashvili V.A., Kirkitadze D.D., Tavartkiladze K.A. Some Results of Investigation of Variations of the Atmospheric Aerosol Optical Depth in Tbilisi , Proc. 16th Int. Conf. on Nucleation&Atmospheric Aerosols, Kyoto, Japan, 26-30 July 2004, 416-419.

Amiranashvili A.G., Amiranashvili V.A., Gzirishvili T.G., Kharchilava J.F., Tavartkiladze K.A. Modern Climate Change in Georgia. Radiatively Active Small Atmospheric Admixtures, Institute of Geophysics, Monograph, Trans. of M. Nodia Institute of Geophysics of Georgian Acad. of Sci., ISSN 1512-1135, vol. LIX, 2005, 128 p.

Tavartkiladze K., Begalishvili N., Kharchilava J., Mumladze D., Amiranashvili A., Vachnadze J., Shengelia I., Amiranashvili V. Contemporary Climate Change in Georgia. Regime of Some Climate Parameters and their Variability. Monograph, Tbilisi, ISBN 99928-885-4.7, 2006, 177 p., (in Georgian), http://openlibrary.ge/handle/123456789/535

Amiranashvili A. G. Issledovaniye grozo-gradovykh protsessov v Gruzii i ikh svyazi s aerozol'nym zagryazneniyem atmosfery. Avtoreferat dissertatsiy na soiskaniye uchenoy stepeni doktora fiziko-matematicheskikh nauk, Tbilisi, 2006, 53 s., http://www.openlibrary.ge/bitstream/123456789/4920/1/Amiranashvili_Avtoreferat_2006.pdf.

Amiranashvili A., Kirilenko A., Kortunova Z., Povolotskaia N., Senik I., Tavartkiladze K. Changeability of the Aerosol Pollution of Atmosphere in Tsalka and Kislovodsk in 1941-1990. Proc. of Int. Conf. “Modern Problems of Geography”, Dedicated to the 80th Anniversary Since the Fondation of Vakhushti Bagrationi Institute of Geography, Collected Papers New Series, N 5(84), ISSN 2233-3347, Tbilisi, 2013, pp. 178-181, (in Russian). http://109.205.44.60/bitstream/123456789/662/1/Geography_2013_Amiranashvili_2....pdf

Amiranashvili A.G., Tavartkiladze K.A, Kirilenko A.A., Kortunova Z.V., Povolotskaya N.P., Senik I.A. Dynamics of the Aerosol Pollution of Atmosphere in Tbilisi and Koslovodsk. Trans. of the Institute of Hydrometeorology, Georgian Technical University, ISSN 1512-0902, 2013, vol. 119, pp. 212-215, (in Russian).

Amiranashvili A.G., Tavartkiladze K.A., Kirilenko A.A., Kortunova Z.V., Povolotskaya N.P., Senik I.A. Dinamika obshchego aerozol'nogo zagryazneniya atmosfery v Kislovodske i nekotorykh rayonakh Gruzii v 1941-1990 gg. Mezhdunarodnaya konferentsiya «Aerozol' i optika atmosfery» (k stoletiyu G.V. Rozenberga), Tezisy dokladov, 21-24 oktyabrya, Moskva, 2014, s. 10.

Stankevich S., Titarenko O., Amiranashvili A., Chargazia Kh. Determination of Atmospheric Aerosol Optical Depth over Territory of Georgia during Different Regimes of Cloudiness Using the Satellite and Ground-Based Measurements Data. Bulletin of the Georgian National Academy of sciences, v. 9, No. 3, 2015, pp. 91-95.

Stankevich A.S., Titarenko O.V., Amiranashvili A.G., Chargazia Kh. Z. Determination of Distribution of Ozone Content in Lower Troposphere and Atmospheric Aerosol Optical Thickness over Territory of Georgia Using Satellite Data and Ground Truth Measurements. Journal of the Georgian Geophysical Society, Issue (B). Physics of Atmosphere, Ocean, and Space Plasma, ISSN: 1512-1127, v.17b, 2014, pp. 26-37.

Stankevich S. A., Titarenko O., V., Amiranashvili A., G., Chargazia Kh., Z. Analysis of the Atmosphere Aerosol and Ozone Condition Over Tbilisi Using Satellite Data and Ground Truth Measurements. 14th Ukrainian Conference on Space Research, Uzhgorod, September, 8-12, 2014, Abstracts, Kyiv, 2014, p. 161.

Amiranashvili A., Amiranashvili V., Tavartkiladze K., Laulaineni N. Atmosperos aerozoluri dachuchqianebis monitoringi Sakartveloshi. Hidrometeorologiis institutis shromebi, ISSN 1512–0902, tomi 108, Tbilisi, 2002, gv. 19–23.

Tsitskishvili M.S., Amiranashvili A.G. Global'nyy monitoring dinamiki aerozol'noy komponenty atmosfery srednikh shirot na sinkhronno-sopryazhennykh fonovykh statsionarakh severnogo i yuzhnogo Kavkaza (predlozheniye po sovmestnomu proyektu). Mezhdunarodnaya konferentsiya «Aerozol' i optika atmosfery» (k stoletiyu G.V. Rozenberga), Tezisy dokladov, 21-24 oktyabrya, Moskva, 2014, s. 86.

Tsitskishvili M., Lushnikov A., Zagaynov V., Pkhaladze M., Amiranashvili A., Tskhakaya K., Chikhladze V., Kikvadze R., Goginava I.B. Nekotoryye rezul'taty issledovaniy i perspektivy aktivnykh vozdeystviy na atmosfernyye aerozoli. International Scientific Conference «Modern Problems of Ecology», Collection of reports, ISSN 1512 -1976, Kutaisi, 2014, s. 180-191.

Amiranashvili A.G., Tsitskishvili M.S. Aerozol'naya ekspress ochistka atmosfery. Mezhdunarodnaya konferentsiya «Aerozol' i optika atmosfery» (k stoletiyu G.V. Rozenberga), Tezisy dokladov, 21-24 oktyabrya, Moskva, 2014, s. 98.

Gzirishvili T.G., Kartsivadze A.I., Okudzhava A.M. Heterogennaya nucleatsia of l'da. Tb.:, “Metsniereba”, 1984, 140 p.

Gzirishvili T.G., Khorguani V.G. About Secondary Ice Crystal Production. Proc. 10-th Int. Conf. Cloud Phys. Bad-Homburg, FRG, 1988, p. 254-256.

Amiranashvili A. Scheme of the interaction of atmospheric aerosols and convective clouds. IUGG 2003 Abstract, Sapporo, Japan, June 30-July 11, 2003, MI02b/D-041.

Amiranashvili A.G. , Amiranashvili V.A., Kirkitadze D.D., Chiabrishvili N.G., Chochishvili K.M. To a Question About the Formation of Secondary Aerosols in the Atmosphere. Trans. of M. Nodia Institute of Geophysics of Georgian Acad. of Sci., ISSN 1512-1135, vol. 58, Tb., 2004, pp.119-126 , (in Russian).

Amiranashvili A.G. On the Role of Cosmic and Radioactive Radiation on the Formation of the Secondary Aerosols in Atmosphere, Int. Conference “Near-Earth Astronomy 2007” Abstract, Terskol, Russia, 3-7 September 2007.

Amiranashvili, A.G., Amiranashvili, V.A., Bakradze, T.S., Chikhladze, V.A., Glonti, N.Ya., Kharchilava, J.F.,Tuskia, I.I On the Influence of Cosmic Rays on the Secondary Aerosols Formation in the Atmosphere. 7th Int. Conference "Problems of Geocosmos", Abstract, 26 - 30 May, 2008, St. Petersburg, Russia.

Amiranashvili A., Bliadze T., Chikhladze V. Photochemical smog in Tbilisi. Monograph, Trans. of Mikheil Nodia institute of Geophysics, ISSN 1512-1135, vol. 63, Tbilisi, 2012, 160 p., (in Georgian).

Amiranashvili A., Bliadze T., Kirkitadze D., Nikiforov G., Nodia A., Kharchilava j., Chankvetadze A., Chikhladze V., Chochishvili K., Chkhaidze G.P. Some Preliminary Results of the Complex Monitoring of Surface Ozone Concentration (SOC), Intensity of Summary Solar Radiation and Sub-Micron Aerosols Content in Air in Tbilisi in 2009-2010. Trans. of Mikheil Nodia Institute of Geophysics, ISSN 1512-1135, vol. 62, Tbilisi, 2010, pp. 189-196, (in Russian).

Amiranashvili A. Negative Correlation Between of Light Ions Content and Radon Concentration: Particularity of Tbilisi City Air Pollution, or Norm for the Urbanized Locality? Proc. of the 14th Int. Conf. on Atmospheric Electricity, Rio de Janeiro, Brazil, August 07-12, 2011, http://www.icae2011.net.br/.

Amiranashvili A. The feedback effect of intensity of ionizing radiation with the light ions content in atmosphere. Paradox (the Tbilisi type of a smog), or usual phenomenon for the strongly pollution cities? Proc. of Int. Conf. “Environment and Global Warming”, Dedicated to the 100th Birthday Anniversary of Academician F. Davitaya, Collected Papers New Series, N 3(82), ISSN 2333-3347, Tbilisi, 2011, pp. 95-100.

Amiranashvili A. Tbilisi Type of Smog as Attribute of Feedback Effect Between the Air Ionization Intensity and Small Ions Concentration. Proc. of 7th Asia-Pacific Int. Conf. on Lightning, Chengdu, China, November 1-4, 2011, http://www.apl2011.net/.

Amiranashvili A., Chargazia Kh. Intra-Annual and Seasonal Variations of Sub-Micron Aerosols Concentration and their Connection with Radon Content in Surface Boundary Layer of Tbilisi City. Bulletin of the Georgian National Academy of Sciences, vol. 10, N 2, 2016, p. 72-78.

Amiranashvili A.G., Bliadze T.G., Kirkitadze D.D., Chikhladze V.A., Chankvetadze A.SH. Submikronnyye aerozoli v atmosfere Tbilisi i ikh vliyaniye na zdorov'ye lyudey. Mezhdunarodnaya konferentsiya «Aerozol' i optika atmosfery» (k stoletiyu G.V. Rozenberga), Tezisy dokladov, 21-24 oktyabrya, Moskva, 2014, s. 68.

Amiranashvili A.G., Gzirishvili T.G., Chumburidze Z.A. On the Role of Artificial Ice Forming Reagents and Radioactive Intermixtures in the Variation of Convective Clouds Thunderstorm and Hail Activity. Proc. 12th Int. Conf. on Clouds and Pricipitation, Zurich, Switzerland, August 19-23, vol. 1, 1996, pp. 267-270

Amiranashvili A.G., Amiranashvili V.A., Bachiashvili L.L., Bibilashvili T.N., Supatashvili G.D. Influence of the Anthropogenic Pollution of the Atmosphere and Thunderstorms on the Precipitations Regime and their Chemical Composition in Alazani Valley Conditions. Proc. 14thInternational Conference on Clouds and Precipitation, Bologna, Italy ,18-23 July 2004, 2_3_216.1-2_3_216.2.

Amiranashvili A., Amiranashvili V., Nodia A., Kirkitadze D. Connection of Thunderstorm Processes Intensity with Aerosol Pollution of the Atmosphere, Proc. 13th Int. Conf. on Atmospheric Electricity, Beijing, China, 13-18 August 2007.

Amiranashvili A. Connection Between the Characteristics of Thunderstorm Activity and Air Pollution in Kakheti Region of Georgia, Proc. of IX Int. Symposium on Lightning Protection, Foz do Iguaçu, Brazil, 26-30 November 2007.

Amiranashvili A. Effect of Air Pollution on the Precipitations in Eastern Georgia, IUGG 2007 Abstract, Perugia, Italy, 2 -13 July 2007

Amiranashvili A. Statistical Models of Connection of Lightning Activity with Aerosol Pollution of Atmosphere, Proc. of X Int. Symposium on Lightning Protection, Curitiba, Brazil, 9-13 November 2009, pp.261-266.

Amiranashvili A. Influence of the Anthropogenic Pollution of Atmosphere on the Changeability of Hail Processes Intensity. Trans. of Mikheil Nodia Institute of Geophysics, ISSN 1512-1135, vol. 64, Tbiisi, 2013, pp. 160-177. http://dspace.gela.org.ge/bitstream/123456789/697/1/Tom-64_Amiranashvili.pdf

Adzhiyev A.KH., Amiranashvili A.G., Chargazia Kh.Z. Vliyaniye aerozol'nogo zagryazneniya atmosfery na effektivnost' protivogradovykh rabot v Kakhetii i na Severnom Kavkaze. Doklady Vserossiyskoy otkrytoy konferentsii po fizike oblakov i aktivnym vozdeystviyam na gidrometeorologicheskiye protsessy, posvyashchennoy 80-letiyu El'brusskoy vysokogornoy kompleksnoy ekspeditsii AN SSSR, 7-9 oktyabrya 2014 g., chast' 2, FGBU «Vysokogornyy geofizicheskiy institut», Nal'chik, 2015, s. 387-395. http://www.dspace.gela.org.ge/bitstream/123456789/5264/1/Аджиев,Амиранашвили,Чаргазиа_Докл_Нальчик_2014%20(2015).pdf

Kartvelishvili L., Tatishvili M., Amiranashvili A., Megrelidze L., Kutaladze N. Weather, Climate and their Change Regularities for the Conditions of Georgia. Monograph, Publishing House “UNIVERSAL”, Tbilisi 2023, 406 p., https://doi.org/10.52340/mng.9789941334658

Surmava A., Gigauri N., Gverdtsiteli L., Intskirveli L. Numerical Modeling of Zestafoni City Dust Distribution in Case of Background Western, Light Air, Gentle and Fresh Breezes. Trans. of Mikheil Nodia Institute of Geophysics, ISSN 1512-1135, vol. 69, Tbilisi, 2018, pp. 182-191, (in Georgian).

Surmava A. A. Numerical Modeling of Zestafoni City Dust Dispersion in case of Western Wind. Journal of the Georgian Geophysical Society, ISSN: 1512-1127, Physics of Solid Earth, Atmosphere, Ocean and Space Plasma, v. 21(2), Tbilisi, 2018, pp. 21-26.

Surmava A., Gigauri N., Kukhalashvili V., Intskirveli L., Mdivani S. Numerical Modeling of the Anthropogenic Dust Transfer by Means of Quasistatic and Non-Quasistatic Models. International Scientific Conference “Natural Disasters in Georgia: Monitoring, Prevention, Mitigation”. Proceedings, ISBN 978-9941-13-899-7, Publish Hous of Iv. Javakhishvili Tbilisi State University, December 12-14, Tbilisi, 2019, pp. 134-137.

Surmava A., Intskirveli L., Kukhalashvili V., Gigauri N. Numerical Investigation of Meso- and Microscale Diffusion of Tbilisi Dust. Annals of Agrarian Science, 18, No. 3, 2020, pp. 295-302.

Kukhalashvili V.G., Gigauri N.G., Surmava A.A., Demetrashvili D.I, Intskirveli L.N. Numerical Modelling of Dust Propagation in the Atmosphere of Tbilisi City: The Case of Background Eastern Fresh Breeze. Journal of the Georgian Geophysical Society, ISSN: 1512-1127, Physics of Solid Earth, Atmosphere, Ocean and Space Plasma, v. 23(1), 2020, pp. 51-56.

Kukhalashvili V.G., Kordzakhia G.I.,Gigauri N.G. , Surmava A.A., Intskirveli L.N. Numerical Modelling of Dust Propagation in the Atmosphere of Tbilisi City: The Case of Background Eastern Gentle Breeze. Journal of the Georgian Geophysical Society, ISSN: 1512-1127, Physics of Solid Earth, Atmosphere, Ocean and Space Plasma, v. 23(1), 2020, pp. 46-50.

Gigauri N., Surmava A., Intskirveli L.,Demetrashvili D.,Gverdtsiteli L., Pipia M. Numerical Modeling of PM2.5 Propagation in Tbilisi Atmosphere in Winter. I. A Case of Background South Light Wind. 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. 74 - 78.

Gigauri N., Surmava A. Evaluation of the Contamination of the Atmosphere of Rustavi with Microparticles by Numerical Modeling. International Conference of Young Scientists "Modern Problems of Earth Sciences", Proceedings, ISBN 978-9941-36-044-2, Publish House of Iv. Javakhishvili Tbilisi State University, Tbilisi, November 21-22, 2022, pp. 102-106, (in Georgian).

Bliadze T.G., Kirkitadze D.D., Tchankvetadze A. Sh., Chikhladze V.A. Comparative Analysis of Air Pollution in Tbilisi and Kutaisi. International Scientific Conference „Modern Problems of Ecology“, Proceedings, ISSN 1512-1976, v. 6, Kutaisi, Georgia, 21-22 September, 2018, pp. 157-160.

Amiranashvili A.G., Chikhladze V.A., Mitin M.N. Preliminary Results of the Analysis of Radar and Ground-Based Monitoring of Dust Formation in Atmosphere Above the Territory of Eastern Georgia on 27 July 2018. Journal of the Georgian Geophysical Society, ISSN: 1512-1127, Physics of Solid Earth, Atmosphere, Ocean and Space Plasma, v. 21(2), Tbilisi, 2018, pp. 61-69.

Amiranashvili A.G., Kirkitadze D.D., Kekenadze E.N. Pandemic of Coronavirus COVID-19 and Air Pollution in Tbilisi in Spring 2020. Journal of the Georgian Geophysical Society, ISSN: 1512-1127, Physics of Solid Earth, Atmosphere, Ocean and Space Plasma, v. 23(1), 2020, pp. 57-72.

Kirkitadze D. Changeability of Monthly Mean Values of PM2.5 and PM10 in Three Points of Tbilisi from January 2017 to October 2021. Pandemic of Coronavirus Covid-19 and PM2.5/10 in Tbilisi from March 2020 to August 2021. 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. 101 - 105.

Kirkitadze D. Variability of Monthly Mean Values of PM2.5 and PM10 in Three Points of Tbilisi from January 2017 to May 2020. Pandemic of Coronavirus COVID-19 and PM2.5/10 in Spring 2020 in Tbilisi.Int. Sc. Conf. „Modern Problems of Ecology“, Proc., ISSN 1512-1976, v. 7, Tbilisi-Telavi, Georgia, 26-28 September, 2020, pp. 268-272.

Kirkitadze D.D. Statistical Characteristics of Aerosol Pollution of Atmosphere in Three Points of Tbilisi in 2017-2018. Journal of the Georgian Geophysical Society, ISSN: 1512-1127, Physics of Solid Earth, Atmosphere, Ocean and Space Plasma, v. 22(2), 2019, pp. 55–62.

Amiranashvili A.G., Amiranashvili V.A., Kirkitadze D.D., Tavartkiladze K.A. Connection Between Atmospheric Aerosol Optical Depth and Aerosol Particle Number Concentration in the Air in Tbilisi, Proc. 17th Int. Conf. on Nucleation&Atmospheric Aerosols, Galway, Ireland, 13-18 August 2007, 865-870.

Hinkle D. E., Wiersma W., Jurs S. G. Applied Statistics for the Behavioral Sciences. Boston, MA, Houghton Mifflin Company, ISBN: 0618124055; 9780618124053, 2003, 756 p.

Kobisheva N., Narovlianski G. Climatological processing of the meteorological information, Leningrad, Gidrometeoizdat, 1978, 294 p., (in Russian).

WHO Air quality guidelines for particulate matter, ozone, nitrogen dioxide and sulfur dioxide. Global update 2005 Summary of risk assessment. World Health Organization, 2006, 22 р., http://apps.who.int/iris/bitstream/handle/10665/69477/WHO_SDE_PHE_OEH_06.02_eng.pdf;jsessionid=48F380E7090ADBB4A166AC7A8610624A?sequence=1