Basic Facts about Numerical Simulations of Atmospheric Composition in the City of Sofia

The atmospheric composition in urban areas is one of the primary tasks in air pollution studies. The research aims to provide a statistically reliable assessment of the atmospheric composition climate of the city of Sofia—typical and extreme features of the special/temporal behavior, annual means, s...

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Autores principales:	Vladimir Ivanov, Ivelina Georgieva
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	atmospheric composition dynamic and chemical processes ensemble of numerical simulation process analysis contribution of different emission sources Meteorology. Climatology QC851-999
Acceso en línea:	https://doaj.org/article/8b43c9b8330a485b88546dac2dd4e082
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spelling	oai:doaj.org-article:8b43c9b8330a485b88546dac2dd4e0822021-11-25T16:44:56ZBasic Facts about Numerical Simulations of Atmospheric Composition in the City of Sofia10.3390/atmos121114502073-4433https://doaj.org/article/8b43c9b8330a485b88546dac2dd4e0822021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4433/12/11/1450https://doaj.org/toc/2073-4433The atmospheric composition in urban areas is one of the primary tasks in air pollution studies. The research aims to provide a statistically reliable assessment of the atmospheric composition climate of the city of Sofia—typical and extreme features of the special/temporal behavior, annual means, seasonal and diurnal variations. For that purpose, extensive numerical simulations of the atmospheric composition fields in Sofia city have been performed. Three models were chosen as modeling tools. We used WRF as a meteorological pre-processor, CMAQ as a chemical transport model, and SMOKE as the emission pre-processor of Models-3 system. We developed the following conclusions. The daily concentration changes of the two essential air pollution species—nitrogen dioxide (NO<sub>2</sub>) and fine particle matters (FPRM, particulate matter (PM<sub>2.5</sub>), which has a diameter between 0 and 2.5 micrometers)—have different magnitudes. Second, the emissions relative contributions to the concentration of different species could be different, varying from 0% to above 100%. The contributions of different emission categories to other species surface concentrations have various diurnal courses. Last, the total concentration change (ΔC) is different for each pollutant. The sign of the contributions of some processes is evident. Still, some may have different signs depending on the type of emissions, weather conditions, or topography.Vladimir IvanovIvelina GeorgievaMDPI AGarticleatmospheric compositiondynamic and chemical processesensemble of numerical simulationprocess analysiscontribution of different emission sourcesMeteorology. ClimatologyQC851-999ENAtmosphere, Vol 12, Iss 1450, p 1450 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	atmospheric composition dynamic and chemical processes ensemble of numerical simulation process analysis contribution of different emission sources Meteorology. Climatology QC851-999
spellingShingle	atmospheric composition dynamic and chemical processes ensemble of numerical simulation process analysis contribution of different emission sources Meteorology. Climatology QC851-999 Vladimir Ivanov Ivelina Georgieva Basic Facts about Numerical Simulations of Atmospheric Composition in the City of Sofia
description	The atmospheric composition in urban areas is one of the primary tasks in air pollution studies. The research aims to provide a statistically reliable assessment of the atmospheric composition climate of the city of Sofia—typical and extreme features of the special/temporal behavior, annual means, seasonal and diurnal variations. For that purpose, extensive numerical simulations of the atmospheric composition fields in Sofia city have been performed. Three models were chosen as modeling tools. We used WRF as a meteorological pre-processor, CMAQ as a chemical transport model, and SMOKE as the emission pre-processor of Models-3 system. We developed the following conclusions. The daily concentration changes of the two essential air pollution species—nitrogen dioxide (NO<sub>2</sub>) and fine particle matters (FPRM, particulate matter (PM<sub>2.5</sub>), which has a diameter between 0 and 2.5 micrometers)—have different magnitudes. Second, the emissions relative contributions to the concentration of different species could be different, varying from 0% to above 100%. The contributions of different emission categories to other species surface concentrations have various diurnal courses. Last, the total concentration change (ΔC) is different for each pollutant. The sign of the contributions of some processes is evident. Still, some may have different signs depending on the type of emissions, weather conditions, or topography.
format	article
author	Vladimir Ivanov Ivelina Georgieva
author_facet	Vladimir Ivanov Ivelina Georgieva
author_sort	Vladimir Ivanov
title	Basic Facts about Numerical Simulations of Atmospheric Composition in the City of Sofia
title_short	Basic Facts about Numerical Simulations of Atmospheric Composition in the City of Sofia
title_full	Basic Facts about Numerical Simulations of Atmospheric Composition in the City of Sofia
title_fullStr	Basic Facts about Numerical Simulations of Atmospheric Composition in the City of Sofia
title_full_unstemmed	Basic Facts about Numerical Simulations of Atmospheric Composition in the City of Sofia
title_sort	basic facts about numerical simulations of atmospheric composition in the city of sofia
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/8b43c9b8330a485b88546dac2dd4e082
work_keys_str_mv	AT vladimirivanov basicfactsaboutnumericalsimulationsofatmosphericcompositioninthecityofsofia AT ivelinageorgieva basicfactsaboutnumericalsimulationsofatmosphericcompositioninthecityofsofia
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Basic Facts about Numerical Simulations of Atmospheric Composition in the City of Sofia

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