Interactions between complicated flow-dispersion patterns and boundary layer evolution in a mountainous complex terrain during elevated SO2 concentrations

Matthaios, Vasileios N.; Triantafyllou, A. G.; Garas, Stylianos; Krestou, Athina; Leivaditou, Elena

doi:10.1007/s00703-016-0480-y

Cited by 5 publications

(5 citation statements)

References 30 publications

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Section: Resultsmentioning

confidence: 99%

“…Another interesting fact is that during the nighttime the wind speed is lower compared to the daytime. This is due to the stagnant atmospheric conditions and the ground-based temperature inversions during the night hours that allow the PM to accumulate and persist in the nearsurface environment [22].…”

Section: Resultsmentioning

confidence: 99%

“…The elevated PM concentrations during the afternoon hours in the winter period can be explained by the enhanced emissions from heating in combination with the stagnant atmospheric conditions. The dispersion of air pollutant in the lignite basin is influenced by the complex mountainous terrain and the weather features (e.g., wind speed and direction, air temperature, atmospheric stability and solar radiation)[22].Figure4shows the daylight and nighttime polar plots for PM2.5 mean concentrations for the year 2021 conditioned by PM10 mean concentrations for the air quality monitoring station in Meliti. As we can see from Figure4during the nighttime the concentrations of PM are much higher reaching up to 60 μg/m 3 (for PM2.5 concentrations) when the wind speed is up to 2 m/sec and the wind direction is from the NNE-NE where a surface coal mine is situated at almost 4km north-east of the Meliti air quality monitoring station.…”

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confidence: 99%

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Investigation of the particulate air pollution and the ratio of PM_2.5 to PM₁₀ concentrations in the atmosphere over the lignite mining and lignite-fired power plants region of Western Macedonia, Greece.

Evagelopoulos

Begou

Kassomenos

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The lignite long-lasting exploitation has resulted in a series of negative impacts on the air quality of the lignite basin of Ptolemaida, Amynteo and Florina. The coal-fired plants in this region are the greatest sources of air pollutants, such as SO2, NOX, CO2, PM, heavy metals and fly ash. In this study, we investigate the air quality of Western Macedonia based on measurements of PM2.5 and PM10 in ten air quality monitoring stations (Filotas, Koilada, Oikismos, Petrana, Komi, Amyntaio, Florina, Vevi-Meliti, Pontokomi and Anargyroi) which are located in the broader area of the lignite power plants. The trends of PM time series over a 12-year period (2010-2021) show a gradual decrease of PM2.5 and PM10 concentrations following the decline of lignite production in Greece. In order to characterize the underlying atmospheric and anthropogenic processes affecting the PM concentrations we assessed the ratios of PM2.5 to PM10. The high ratios of PM2.5/PM10 indicate a major contribution of fine particles attributable to anthropogenic air pollution sources, while small ratios indicate that coarse particles are dominant, which might be related to natural sources of air pollution. We found that average PM2.5/PM10 ratios during the study period ranged between 0.48 in Oikismos and 0.70 in Florina and Vevi-Meliti. For Florina and Vevi-Meliti, the daily PM2.5/PM10 ratios were found to reach the value of 1.0, while the daily average ratios of PM2.5/PM10 were above 0.9 for almost the 15 % of the days in these sites. In the other sites high daily ratios of PM2.5/PM10 were found for a lesser number of days. The high ratios which have been found at these sites indicate the considerable contribution of energy combustion for heating purposes and other anthropogenic processes. Overall, we used the PM2.5/PM10 ratio to characterize the processes affecting the air quality within the local environment.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

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Investigation of the particulate air pollution and the ratio of PM_2.5 to PM₁₀ concentrations in the atmosphere over the lignite mining and lignite-fired power plants region of Western Macedonia, Greece.

Evagelopoulos

Begou

Kassomenos

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…This paper focuses on the evaluation of the performance of the air pollution model (TAPM) in the region of Western Macedonia, Greece. Despite some attempts to evaluate TAPM in a mountainous terrain (Triantafyllou et al 2011;Aidaoui et al 2014;Matthaios et al 2016), from the current bibliography and as far as the authors are aware, this is the first detailed and long-term attempt to evaluate TAPM in a mountainous complex terrain area. However, there have been several studies concerning the model's performance in a coastal and/or flat terrain.…”

Section: Introductionmentioning

confidence: 96%

Performance and evaluation of a coupled prognostic model TAPM over a mountainous complex terrain industrial area

Matthaios

Triantafyllou²,

Albanis

et al. 2017

Theor Appl Climatol

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Atmospheric modeling is considered an important tool with several applications such as prediction of air pollution levels, air quality management, and environmental impact assessment studies. Therefore, evaluation studies must be continuously made, in order to improve the accuracy and the approaches of the air quality models. In the present work, an attempt is made to examine the air pollution model (TAPM) efficiency in simulating the surface meteorology, as well as the SO 2 concentrations in a mountainous complex terrain industrial area. Three configurations under different circumstances, firstly with default datasets, secondly with data assimilation, and thirdly with updated land use, ran in order to investigate the surface meteorology for a 3year period (2009-2011) and one configuration applied to predict SO 2 concentration levels for the year of 2011.The modeled hourly averaged meteorological and SO 2 concentration values were statistically compared with those from five monitoring stations across the domain to evaluate the model's performance. Statistical measures showed that the surface temperature and relative humidity are predicted well in all three simulations, with index of agreement (IOA) higher than 0.94 and 0.70 correspondingly, in all monitoring sites, while an overprediction of extreme low temperature values is noted, with mountain altitudes to have an important role. However, the results also showed that the model's performance is related to the configuration regarding the wind. TAPM default dataset predicted better the wind variables in the center of the simulation than in the boundaries, while improvement in the boundary horizontal winds implied the performance of TAPM with updated land use. TAPM assimilation predicted the wind variables fairly good in the whole domain with IOA higher than 0.83 for the wind speed and higher than 0.85 for the horizontal wind components. Finally, the SO 2 concentrations were assessed by the model with IOA varied from 0.37 to 0.57, mostly dependent on the grid/monitoring station of the simulated domain. The present study can be used, with relevant adaptations, as a user guideline for future conducting simulations in mountainous complex terrain.

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“…However, hourly SO 2 concentrations from the site M4, indicated the increase during the nights and early mornings which could relate to the morning inversions [23]. The complexity of interaction between the weather conditions and distribution of pollutants, as well as the increase in concentration near large sources has been investigated in recent studies [24,25]. During the measurement campaigns, the data indicated that meteorological conditions had changed just before the increase in concentration levels in winter campaign.…”

Section: In Situ Sulfur Dioxide Air Quality Monitoring Resultsmentioning

confidence: 99%

Air quality monitoring and modeling near coal fired power plant

et al. 2019

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In municipality of Ugljevik (Bosnia and Herzegovina), the coal-fired thermal power plant is located in the vicinity of the populated area. The ambient air quality monitoring within this area were not systematically performed in the previous period. This research was the first to include indicative measurement of pollutant concentration in air combined with modeling techniques for the purpose of a preliminary assessment of impact which the power plant has on air quality. Since coal, with the sulfur content of 3-6%, is used, as well as the fact that there was no flue gas desulphurization during the research period, this paper shows the results for SO 2 as one of the most prominent indicators of pollution originating from the power plant. As a complement to the measurements, modeling of SO 2 dispersion was carried out using ADMS5 software. The measurements indicated increased ground-level concentrations of SO 2. Additionally, the modeling of SO 2 dispersion with real meteorological data was carried out. The modeling confirmed high SO 2 concentrations in research area. Also, it was found that the high episodic ground-level SO 2 concentrations are the consequence of the terrain configuration and meteorological conditions.

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Interactions between complicated flow-dispersion patterns and boundary layer evolution in a mountainous complex terrain during elevated SO2 concentrations

Cited by 5 publications

References 30 publications

Investigation of the particulate air pollution and the ratio of PM_2.5 to PM₁₀ concentrations in the atmosphere over the lignite mining and lignite-fired power plants region of Western Macedonia, Greece.

Investigation of the particulate air pollution and the ratio of PM_2.5 to PM₁₀ concentrations in the atmosphere over the lignite mining and lignite-fired power plants region of Western Macedonia, Greece.

Performance and evaluation of a coupled prognostic model TAPM over a mountainous complex terrain industrial area

Air quality monitoring and modeling near coal fired power plant

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Interactions between complicated flow-dispersion patterns and boundary layer evolution in a mountainous complex terrain during elevated SO2 concentrations

Cited by 5 publications

References 30 publications

Investigation of the particulate air pollution and the ratio of PM2.5 to PM10 concentrations in the atmosphere over the lignite mining and lignite-fired power plants region of Western Macedonia, Greece.

Investigation of the particulate air pollution and the ratio of PM2.5 to PM10 concentrations in the atmosphere over the lignite mining and lignite-fired power plants region of Western Macedonia, Greece.

Performance and evaluation of a coupled prognostic model TAPM over a mountainous complex terrain industrial area

Air quality monitoring and modeling near coal fired power plant

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Investigation of the particulate air pollution and the ratio of PM_2.5 to PM₁₀ concentrations in the atmosphere over the lignite mining and lignite-fired power plants region of Western Macedonia, Greece.

Investigation of the particulate air pollution and the ratio of PM_2.5 to PM₁₀ concentrations in the atmosphere over the lignite mining and lignite-fired power plants region of Western Macedonia, Greece.