scholarly journals METEOROLOGICAL POTENTIAL OF THE ATMOSPHERE OF THE SARNY AND ITS GEOECOLOGICAL SIGNIFICANCE

2020 ◽  
pp. 70-83
Author(s):  
Oksana Romaniv ◽  
Larisa Janello
Keyword(s):  
Thermal Regime ◽  
Urban Areas ◽  
Warm Season ◽  
Weather Conditions ◽  
Cold Season ◽  
Practical Significance ◽  
Close Relationship ◽  
Harmful Substances ◽  
The Masses ◽  
The City

The purpose of the study is to assess the meteorological potential of the atmosphere of Sarny and to determine the degree of influence of various parameters of the microclimatic system. The research methodology includes a system of methods and techniques: monographic (used to study the materials of literary sources and Internet resources), mathematical (used a number of special indicators: Coefficient of meteorological potential according to VA Baranovsky, Coefficient of weather hardness Arnoldi for the cold season and heat for the warm season), graphic (used to visualize the results of the study). Research results. The processes of accumulation of harmful substances in the atmospheric air of the city of Sarny prevail over the processes of scattering throughout the year. The best processes of dispersion of harmful substances in the air of the city of Sarny occur in the cold season, the processes of accumulation are most active in July-August. The meteorological potential in Sarny is worse than in Rivne and Dubno, which are located in the southern part of Rivne region. A reliable direct close relationship between the concentration of pollutants (sulfur dioxide, formaldehyde) in the air with a meteorological potential of the atmosphere in Sarni been set. This should be considered when monitoring the atmosphere. During the cold period of the year in the thermal regime of the microclimate of the city the severe weather prevails in the winter months, and in March, October, November - mild weather. In the warm period of the year only in summer the indicators of the thermal regime are in the comfort zone. The weather, which is characterized by extreme thermal discomfort and poses a danger and extreme danger to humans, was not formed during 2016-2018. In the cold season, the relationship between the thermal regime and the level of meteorological potential of the geourbosystem of Sarny is closer. But in the warm season, the self-cleaning abilities of the atmosphere tend to deteriorate with increasing average comfort temperature. We assume that the processes of global warming will make the microclimate of the city of Sarny in the warm season more comfortable in terms of its thermal regime, but less attractive in terms of meteorological potential of the atmosphere. Scientific novelty of the work: the meteorological potential of the atmosphere of the city of Sarny by months for 2016-2018 was calculated; regularities of change of these indicators in warm and cold periods of the year were established; the meteorological potential of Sarny was compared with the indicators of other cities of the region (Dubno and Rivne). The correlations between the meteorological potential of the atmosphere of the city of Sarny with the level of air pollution and with the indicators of the thermal regime for cold and warm seasons have been established. The practical significance of the work is that the obtained results can be used in the form of recommendations to local authorities for the improvement of urban areas to protect the air from pollution in conditions of low meteorological potential. The conclusions obtained in the work can be used as a basis for geoplanning projects for the location of industries. Also, the information obtained in the work can be taken into account by the media to inform the masses in order to form a rational behavior of the population in different weather conditions.

scholarly journals URBAN STUDIES IN THE CONTEXT OF THEORIES OF VISUAL PRACTICES

2017 ◽  
pp. 93-97
Author(s):  
A. M. Tormakhova
Keyword(s):  
Cultural Studies ◽  
Urban Environment ◽  
Urban Space ◽  
Urban Studies ◽  
Urban Areas ◽  
Mutual Influence ◽  
Interdisciplinary Approach ◽  
Practical Significance ◽  
Monumental Architecture ◽  
The City

One of the leading trends in contemporary cultural studies is the appealto the field of visual. Thepurpose of the article is to investigate the range of problems associated withthe existence, functioning of various visual practices in the urban space and the disclosure of the specifics of communication carried out through their intermediation. In urban space, there are many forms, such as monumental architecture, urban sculpture, outdoor illumination, landscape art, street art, graffiti and others. These artifacts are the subject of cultural research within different disciplines - aesthetics, cultural studies, design, and art. It may be noted that in recentdecades, significant development gets such a direction as Urban Studies, in which the focus of research serves the city. The methodology of the study includes an appeal to an interdisciplinary approach that relies on the achievements of practical cultural studies, Urban studies,and aesthetics theory by Ukrainian and Western authors. Scientific novelty consists in analyzing the connection ofactual visual practices presented in the urban space and forming of Internet activity, which facilitates the mutual influence of these spheres one on another. The author noted that urban space is gradually becoming not only interactive, but also fully assuming the characteristics of WEB 2.0, which means active rethinking and transforming the environment, urban residents involvement in decision-making that becomes a norm of everyday life. City is a kind of text that reflects changing tastes, politicaland economic factors in visualform. Town and city public spaces play an important role in shaping the interaction within society. One of the pressing problems of practical cultural studies in general and urban areas in particular, should be integrated into organization of the urban environment and design the image of the city. The practical significance lies in the fact that the results of the research can beused in developing the urban sphere in particular and in actualizing the issue of organizing the urban environment and constructing the image of the city.

Morfologi Kota Bandung Pada Abad XX: Perspektif Historis

Metahumaniora ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 335
Author(s):  
Miftahul Falah
Keyword(s):  
Population Growth ◽  
Urban Areas ◽  
Open Space ◽  
City Planning ◽  
Historical Method ◽  
Morphological Aspects ◽  
Close Relationship ◽  
City Gates ◽  
The City ◽  
Planning Problems

AbstrakKota Bandung merupakan salah satu kota penting sejak masa penjajahan Belanda. Berawal dari sebuah kampung, Bandung kemudian berkembang seiring dengan kedudukannya sebagai pusat pemerintahan. Penelitian terhadap perkembangan Bandung sudah banyak dilakukan. Namun, aspek morfologis dari pertumbuhan Kota Bandung belum dikaji secara mendalam. Bagaimana pertumbuhan Kota Bandung pada Abad XX ditinjau dari aspek morfologi kota yang mencakup masalah kependudukan dan luas wilayah, areal terbangun, dan simbol kota? Untuk menjawab pertanyaan itu, dilakukan penelitian historis dengan menerapkan metode sejarah yang meliputi empat tahap, yakni heuristik, kritik, interpretasi, dan historiografi. Hasil penelitian menunjukkan bahwa pertama, secara morfologis terdapat hubungan yang erat antara pertambahan penduduk dan perluasan wilayah kota; kedua, seiring dengan pertumbuhan penduduk dan perluasan wilayah, areal terbangun menjadi semakin meluas; ketiga, simbol-simbol kota yang mencakup tugu atau monumen, nama jalan, gerbang kota, dan bangunan menunjukkan ciri/karakter Kota Bandung sesuai dengan jiwa zaman (zeitgeist)-nya.Kata kunci: kota Bandung, penduduk, areal terbangun, ruang terbuka, simbol kotaAbstractBandung is one of the important cities since the Dutch colonial period. Starting from a village, Bandung then developed along with its position as a center of government. Research on the development of Bandung city has been done, but the morphological aspects of the growth of Bandung city have not been studied in depth yet. How is the growth of Bandung city in 20th century in terms of morphological aspects of the city that includes demographic land area, city planning problems, built up area, and the symbol of the city? The method used in this reasearch is historical method that deals with four steps, namely heuristic, criticism, interpretation, and historiography. The results show that, first, morphologically there is a close relationship between population growth and the expansion of urban areas; second, along with population growth and the expansion of urban areas, the built up area becomes even more widespread; third, urban symbolism that includes pillar or monument, street name, city gates, and buildings show traits or characters of Bandung in accordance with zeitgeist.Keywords: city of Bandung, demography, built up Area, open space, urban symbolism

scholarly journals GIS ASSESSMENT OF THE PM10, PM2.5 AND PM1.0 CONCENTRATIONS IN URBAN AREA OF TEHRAN IN WARM AND COLD SEASONS

2014 ◽  
Vol XL-2/W3 ◽  
pp. 141-149 ◽  
Author(s):  
F. Halek ◽  
A. Kavousi-rahim
Keyword(s):  
Environmental Analysis ◽  
Urban Areas ◽  
Warm Season ◽  
Suspended Particles ◽  
Cold Season ◽  
Decision Makers ◽  
Atmospheric Models ◽  
The West ◽  
Arc Gis ◽  
The Mean

In recent years, atmospheric models, such as GIS, are used for environmental analysis and the related management for supporting the environmental decision makers in different countries. In this study, concentrations of PM<sub>10</sub>, PM<sub>2.5</sub> and PM<sub>1.0</sub> are found in urban areas of Tehran in warm and cold seasons and the data applied in the related modelling, using Arc-GIS. For this purpose, samples were collected from 42 sites in an 18 km<sub>2</sub> region located in the west and central parts of Tehran. The mean concentrations of PM<sub>1.0</sub>, PM<sub>2.5</sub> and PM<sub>10</sub> are found to be 13.14 &mu;g/m<sup>3</sup>, 22.67 &mu;g/m<sup>3</sup> and 95.72 &mu;g/m<sup>3</sup> in the warm season; and 50.12 &mu;g/m<sup>3</sup>, 70.72 &mu;g/m<sup>3</sup> and 193.86 &mu;g/m<sup>3</sup> in the cold season respectively. In this paper, with the aid of GIS, concentrations of the suspended particles were measured in 22 major hospitals, the patients in which are in contact with these pollutants. It was found the concentrations of the suspended particles were much higher in the cold season.

scholarly journals Possibilities for improvement of environmental monitoring of precipitation in the city (a case of Lutsk)

2019 ◽  
Keyword(s):  
Environmental Monitoring ◽  
Urban Areas ◽  
Spatial Organization ◽  
Atmospheric Precipitation ◽  
Carbon Dioxide Concentration ◽  
Spatial Differentiation ◽  
Practical Significance ◽  
Anthropogenic Contamination ◽  
State Monitoring ◽  
The City

Formulation of the problem. The environmental parameters of precipitation in the city often differ from the background values and require the special observations program. The existing state monitoring system does not reflect the spatial differentiation of such parameters in urban areas, so it needs to be improved. The purpose of the article: to find out the features of organization and implementation of rainfall environmental monitoring in urban areas, with the justification of the main parameters of observation and spatial placement of network points. Methods. The main results are based on the authors' experience in own observations on the amount, acidity and mineralization of precipitation in several quarters of Lutsk during 2015-2018. Results. Own observations and mapping of individual parameters of atmospheric precipitation in the city allowed to reveal the dependence of the indexes of acidity and mineralization on the amount of precipitation, air pollution, directions of air inflow, temperature, etc. The spatial differentiation of these indicators in the city is significant (the amplitude can reach up to 0.9 units of pH and 15-17 ppm of tds) and is related to the distribution of anthropogenic emissions and some microclimatic differences. Therefore, by organization the system of ecological monitoring of precipitation in the city it is necessary to focus on the definition of such basic parameters: pH, total mineralization, amount of precipitation, and also concomitant: water and air temperature, direction of airflows, carbon dioxide concentration, duration of the previous rainless period, etc. To select the representative locations for the control of precipitation in the city, it is necessary to analyze the following indicators: direction of prevailing winds, landscape and geomorphological features, the proximity of the most sources of anthropogenic contamination, building types etc. In this case, the minimum monitoring scheme should include such control points: the near and far outskirts (in relation to the arrival of prevailing air masses), the leeward sides of large industrial zones or transport interchanges, the largest green zone, area near the city water body, and several points (1-3) in residential areas. Scientific novelty and practical significance. The main parameters and principles of the spatial organization of environmental monitoring of rainwater in the city are identified. The algorithm for creation such network has been tested in Lutsk and can be used for realization in other cities. Automation of similar measurements based on microcontrollers will to create quality non-state monitoring networks with the display of data in real time.

Ice Nucleating Particles in Southern Chile and their connection to clouds 

2021 ◽  
Author(s):  
Heike Wex ◽  
Xianda Gong ◽  
Boris Barja ◽  
Patric Seifert ◽  
Martin Radenz ◽  
...  
Keyword(s):  
Warm Season ◽  
Weather Conditions ◽  
Chem Phys ◽  
Cold Season ◽  
Southern Chile ◽  
Backscatter Coefficient ◽  
Air Masses ◽  
North West ◽  
The North ◽  
Almost All

&lt;p&gt;Concentrations of atmospheric ice nucleating particles (INP) were obtained from weekly filter samples which were collected from May 2019 until March 2020 in southern Chile. Sampling took place at an altitude of 620m above sea level, on top of Cerro Mirador, a mountain directly to the west of Punta Arenas (53&amp;#176;S, 71&amp;#176;W). Additional aerosol properties such as particle number size distributions were measured as well. In parallel, ground-based remote sensing measurements with lidar and cloud radar were made in Punta Arenas.&lt;/p&gt;&lt;p&gt;INP concentrations were obtained from washing atmospheric aerosol particles off from deployed polycarbonate filters and subsequent analysis of the samples on two different freezing arrays which were used and described by us earlier (e.g., in Gong et al., 2019 and Hartmann et al., 2020). INP concentrations could be obtained over a broad temperature range from above -5&amp;#176;C down to -25&amp;#176;C.&lt;/p&gt;&lt;p&gt;INP concentrations were clearly higher than data obtained for the Southern Ocean region as reported in McCluskey et al. (2018) and Welti et al. (2020). Indeed, they were comparable to concentrations measured at Cape Verde (Gong et al., 2020). INP concentrations obtained during the warm season were spreading over ~ 2 orders of magnitude at any temperature. Data obtained for the cold season almost all were at the upper end of the observed INP concentration range, with only one weekly sample featuring low concentrations.&lt;/p&gt;&lt;p&gt;Heating of the samples was also applied, and the heated samples had clearly lower INP concentrations across the examined temperatures, implying a biological fraction among the INP of ~ 80%. Therefore, local terrestrial sources may be the source of the observed INP.&lt;/p&gt;&lt;p&gt;The assumption of local terrestrial sources is strengthened by a case study. For that, two subsequent samples obtained during the cold season were examined in more detail. These were the one sample with low INP concentrations which was obtained during the cold season during the week from August 14 to August 22, and the subsequent sample collected from August 22 to August 29, which was amongst the highest samples. Backward trajectories together with an analysis of Lidar data showed that the low INP concentrations were obtained for a time during which air masses predominantly came in from the south with little contact to land and for calm weather conditions. Conditions were not as stable during the following week which featured air masses mostly coming in from the north-west. The aerosol backscatter coefficient at the height level of the in-situ measurements was obtained from lidar observations for both weeks and shows about 50 % lower aerosol load for the first week, when INP concentrations were low.&lt;/p&gt;&lt;p&gt;All of this hints to local terrestrial sources for the observed highly ice active biogenic INP.&lt;/p&gt;&lt;p&gt;&amp;#160;&lt;/p&gt;&lt;p&gt;Literature:&lt;/p&gt;&lt;p&gt;Gong et al. (2019), Atmos. Chem. Phys., 19, 10883-10900, doi:10.5194/acp-19-10883-2019.&lt;/p&gt;&lt;p&gt;Gong et al. (2020), Atmos. Chem. Phys., 20, 1451-1468, doi:10.5194/acp-20-1451-2020.&lt;/p&gt;&lt;p&gt;Hartmann et al. (2020), Geophys. Res. Lett., 47, doi:10.1029/2020GL087770.&lt;/p&gt;&lt;p&gt;McCluskey et al. (2018), Geophys. Res. Lett., 45, doi:10.1029/2018gl079981.&lt;/p&gt;&lt;p&gt;Welti et a. (2020), Atmos. Chem. Phys. 20, doi:10.5194/acp-2020-466.&lt;/p&gt;

scholarly journals Weather Conditions and Outdoor Fall Injuries in Northwestern Russia

2020 ◽  
Vol 17 (17) ◽  
pp. 6096 ◽  
Author(s):  
Tatiana N. Unguryanu ◽  
Andrej M. Grjibovski ◽  
Tordis A. Trovik ◽  
Børge Ytterstad ◽  
Alexander V. Kudryavtsev
Keyword(s):  
Air Temperature ◽  
Negative Binomial ◽  
Ground Surface ◽  
Warm Season ◽  
Negative Binomial Regression ◽  
Weather Conditions ◽  
Cold Season ◽  
Population Based ◽  
Fall Injuries ◽  
Northwestern Russia

This study aimed to investigate associations between the weather conditions and the frequency of medically-treated, non-fatal accidental outdoor fall injuries (AOFIs) in a provincial region of Northwestern Russia. Data on all non-fatal AOFIs that occurred from January 2015 through June 2018 (N = 1125) were extracted from the population-based Shenkursk Injury Registry (SHIR). Associations between the weather conditions and AOFIs were investigated separately for the cold (15 October–14 April) and the warm (15 April–14 October) seasons. Negative binomial regression was used to investigate daily numbers of AOFIs in the cold season, while zero-inflated Poisson regression was used for the warm season. The mean daily number of AOFIs was 1.7 times higher in the cold season compared to the warm season (1.10 vs. 0.65, respectively). The most typical accident mechanism in the cold season was slipping (83%), whereas stepping wrong or stumbling over something was most common (49%) in the warm season. The highest mean daily incidence of AOFIs in the cold season (20.2 per 100,000 population) was observed on days when the ground surface was covered by compact or wet snow, air temperature ranged from −7.0 °C to −0.7 °C, and the amount of precipitation was above 0.4 mm. In the warm season, the highest mean daily incidence (7.0 per 100,000 population) was observed when the air temperature and atmospheric pressure were between 9.0 °C and 15.1 °C and 1003.6 to 1010.9 hPa, respectively. Along with local weather forecasts, broadcasting warnings about the increased risks of outdoor falls may serve as an effective AOFI prevention tool.

scholarly journals WRF-Chem simulation of aerosol seasonal variability in the San Joaquin Valley

2016 ◽  
Author(s):  
Longtao Wu ◽  
Hui Su ◽  
Olga V. Kalashnikova ◽  
Jonathan H. Jiang ◽  
Chun Zhao ◽  
...  
Keyword(s):  
Rural Areas ◽  
Seasonal Variability ◽  
Urban Areas ◽  
Transport Model ◽  
Vertical Mixing ◽  
Dust Emission ◽  
Warm Season ◽  
Cold Season ◽  
San Joaquin Valley ◽  
Fire Emissions

Abstract. WRF-Chem simulations of aerosol seasonal variability in the San Joaquin Valley (SJV), California are evaluated by satellite and in-situ observations. Results show that the WRF-Chem model successfully captures the distribution, magnitude and variation of SJV aerosols in cold season. However, the aerosols are not well represented in warm season. Aerosol simulations in urban areas during the cold season are sensitive to model horizontal resolution, with better simulations at 4 km resolution than at 20 km resolution, mainly due to inhomogeneous distribution of anthropogenic emissions. In rural areas, the model sensitivity to grid size is rather small. Our observational analysis show that dust is a primary contributor to aerosols in the SJV, especially in the warm season. Aerosol simulations in the warm season are sensitive to parameterization of dust emission in the WRF-Chem model. The GOCART (Goddard Global Ozone Chemistry Aerosol Radiation and Transport) dust scheme produces very little dust in the SJV while the DUSTRAN (DUST TRANsport model) scheme overestimates dust emission. Vertical mixing of aerosols is not adequately represented in the model comparing to CALIPSO (Cloud-Aerosol Lidar and Infrared pathfinder Satellite Observation) aerosol extinction profiles. Improved representation of dust emission and vertical mixing are needed for better simulations of aerosols in warm season in the SJV. Aerosols generated by wild fires are not captured in the simulations with climatological fire emissions, underscoring the need of fire emission observations for operational usage.

scholarly journals Establish high-resolution hourly weather data for simulating building energy consumption in different regions

2019 ◽  
Vol 111 ◽  
pp. 04032
Author(s):  
Feng-Yi Lin ◽  
Ruey-Lung Hwang ◽  
Tzu-Ping Lin
Keyword(s):  
Energy Consumption ◽  
Urban Areas ◽  
Reference Value ◽  
Weather Conditions ◽  
Buffer Zone ◽  
Building Energy ◽  
Weather Data ◽  
Weather Factors ◽  
Set Up ◽  
The City

Due to the various local weather conditions in different regions of the city, the demand for air conditioning (AC) of housing is different, too. It happened occasionally to underestimate the energy consumption of AC in urban areas, because of using suburban/rural weather station data for building energy simulation. This study set up 34 automatic weather stations in the urban area of Tainan City, Taiwan for a year-round collection of local temperature and relative humidity data. Those weather measurement, the GIS information of a buffer zone and multiple regression analysis were used to establish the relationship between the weather factors, needed for the morphing approach, and the parameters of landscape use and cover. The buffer zone is an area of 1000×1000 m2 around the measured point, and is divided to two layers with upwind and downwind parts. Local hourly weather-year files for a whole of the city with a resolution of 200×200 m2 were generated by the morphing approach. With the different local hourly weather-year files, the AC-required hours and energy consumption from May to October for a typical residential with hybrid ventilation mode was obtained by using the EnergyPlus. And the cumulative UHI of each grid between May and October is calculated by taking the average of the five lowest temperatures as the reference value. The result shows that the number of AC hours of residential will increase by 10%, and the energy consumption increase from 1000 kWh to 2500 kWh, when long-term UHI intensity increases from 2000 °C-hour to 9000 °C-hour.

Morfologi Kota Bandung Pada Abad XX: Perspektif Historis

Metahumaniora ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 335
Author(s):  
Miftahul Falah
Keyword(s):  
Population Growth ◽  
Urban Areas ◽  
Open Space ◽  
City Planning ◽  
Historical Method ◽  
Morphological Aspects ◽  
Close Relationship ◽  
City Gates ◽  
The City ◽  
Planning Problems

AbstrakKota Bandung merupakan salah satu kota penting sejak masa penjajahan Belanda. Berawal dari sebuah kampung, Bandung kemudian berkembang seiring dengan kedudukannya sebagai pusat pemerintahan. Penelitian terhadap perkembangan Bandung sudah banyak dilakukan. Namun, aspek morfologis dari pertumbuhan Kota Bandung belum dikaji secara mendalam. Bagaimana pertumbuhan Kota Bandung pada Abad XX ditinjau dari aspek morfologi kota yang mencakup masalah kependudukan dan luas wilayah, areal terbangun, dan simbol kota? Untuk menjawab pertanyaan itu, dilakukan penelitian historis dengan menerapkan metode sejarah yang meliputi empat tahap, yakni heuristik, kritik, interpretasi, dan historiografi. Hasil penelitian menunjukkan bahwa pertama, secara morfologis terdapat hubungan yang erat antara pertambahan penduduk dan perluasan wilayah kota; kedua, seiring dengan pertumbuhan penduduk dan perluasan wilayah, areal terbangun menjadi semakin meluas; ketiga, simbol-simbol kota yang mencakup tugu atau monumen, nama jalan, gerbang kota, dan bangunan menunjukkan ciri/karakter Kota Bandung sesuai dengan jiwa zaman (zeitgeist)-nya.Kata kunci: kota Bandung, penduduk, areal terbangun, ruang terbuka, simbol kotaAbstractBandung is one of the important cities since the Dutch colonial period. Starting from a village, Bandung then developed along with its position as a center of government. Research on the development of Bandung city has been done, but the morphological aspects of the growth of Bandung city have not been studied in depth yet. How is the growth of Bandung city in 20th century in terms of morphological aspects of the city that includes demographic land area, city planning problems, built up area, and the symbol of the city? The method used in this reasearch is historical method that deals with four steps, namely heuristic, criticism, interpretation, and historiography. The results show that, first, morphologically there is a close relationship between population growth and the expansion of urban areas; second, along with population growth and the expansion of urban areas, the built up area becomes even more widespread; third, urban symbolism that includes pillar or monument, street name, city gates, and buildings show traits or characters of Bandung in accordance with zeitgeist.Keywords: city of Bandung, demography, built up Area, open space, urban symbolism

scholarly journals NOx AND O3 VARIABILITY AND ITS RELATION WITH WEATHER CONDITIONS IN IAȘI CITY

2019 ◽  
Vol 13 (2) ◽  
pp. 69-85
Author(s):  
Vlad-Alexandru AMIHĂESEI ◽  
Lucian SFÎCĂ ◽  
Liviu APOSTOL ◽  
Alina LEAHU
Keyword(s):  
Surface Ozone ◽  
Atmospheric Stability ◽  
Warm Season ◽  
Weather Conditions ◽  
Cold Season ◽  
Atmospheric Pollutants ◽  
Oxides Of Nitrogen ◽  
Atmospheric Conditions ◽  
Synoptic Conditions ◽  
Radiation Maximum

The paper presents the temporal variability of surface ozone (O3) and its precursors (oxides of nitrogen - NOx) from January 2012 to December 2015. In the same time, this study is aimed to explore the influence of the weather elements on these two major atmospheric pollutants in the area of Iași city. The maximum record of nitrogen oxides reached during the 4 analyzed years was 1200 μ/m-3 on October 27, 2015, a period of the year when atmospheric stability prevails. During the warm season (considered from May to September) the highest concentration of ozone was recorded at 155 μ/m-3. The winds direction from SSE or NNW and the winds speed greater than 2 m/s can significantly increase the concentration of the O3 and NOx respectively. Also, the stable atmospheric conditions can increase especially the concentration of the nitrogen dioxides. The statistical results illustrate a strong Pearson's correlation of surface ozone with solar radiation/maximum air temperature (r >0.5). The correlations were strongest during the summer months. Using the composite method, between warm season and cold season a difference of the pollutants concentration greater than 30 units for NOx was observed. Synoptic conditions associated with high pollution are also described.

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