NOx AND O3 VARIABILITY AND ITS RELATION WITH WEATHER CONDITIONS IN IAȘI CITY
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 cit...
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| Format: | Article |
| Language: | English |
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Alexandru Ioan Cuza University Press, Iasi, Romania
2019-10-01
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| Series: | Present Environment and Sustainable Development |
| Subjects: | |
| Online Access: | http://pesd.ro/articole/nr.13/nr.2/10432%20-Volume13_issue_2%2005_paper.pdf |
| _version_ | 1818915256393531392 |
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| author | AMIHĂESEI Vlad-Alexandru SFÎCĂ Lucian APOSTOL Liviu LEAHU Alina |
| author_facet | AMIHĂESEI Vlad-Alexandru SFÎCĂ Lucian APOSTOL Liviu LEAHU Alina |
| author_sort | AMIHĂESEI Vlad-Alexandru |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-19T23:59:23Z |
| format | Article |
| id | doaj.art-0711033aeb574f5587ca1f127cfb3be6 |
| institution | Directory Open Access Journal |
| issn | 2284-7820 |
| language | English |
| last_indexed | 2024-12-19T23:59:23Z |
| publishDate | 2019-10-01 |
| publisher | Alexandru Ioan Cuza University Press, Iasi, Romania |
| record_format | Article |
| series | Present Environment and Sustainable Development |
| spelling | doaj.art-0711033aeb574f5587ca1f127cfb3be62022-12-21T20:00:53ZengAlexandru Ioan Cuza University Press, Iasi, RomaniaPresent Environment and Sustainable Development2284-78202019-10-011326985https://doi.org/10.15551/pesd2019132005NOx AND O3 VARIABILITY AND ITS RELATION WITH WEATHER CONDITIONS IN IAȘI CITYAMIHĂESEI Vlad-Alexandru0https://orcid.org/0000-0001-6681-1330SFÎCĂ Lucian1https://orcid.org/0000-0001-7725-682XAPOSTOL Liviu2https://orcid.org/0000-0002-8514-6820LEAHU Alina3Alexandru Ioan Cuza University of Iași, Faculty of Geography and Geology; Romanian Meteorological Administration, București Alexandru Ioan Cuza University of Iași, Faculty of Geography and Geology Alexandru Ioan Cuza University of Iași, Faculty of Geography and GeologyEnviromental Protection Agency of IașiThe 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.http://pesd.ro/articole/nr.13/nr.2/10432%20-Volume13_issue_2%2005_paper.pdfground level ozoneoxides of nitrogenthermal inversionpearson correlationsynoptic conditions |
| spellingShingle | AMIHĂESEI Vlad-Alexandru SFÎCĂ Lucian APOSTOL Liviu LEAHU Alina NOx AND O3 VARIABILITY AND ITS RELATION WITH WEATHER CONDITIONS IN IAȘI CITY Present Environment and Sustainable Development ground level ozone oxides of nitrogen thermal inversion pearson correlation synoptic conditions |
| title | NOx AND O3 VARIABILITY AND ITS RELATION WITH WEATHER CONDITIONS IN IAȘI CITY |
| title_full | NOx AND O3 VARIABILITY AND ITS RELATION WITH WEATHER CONDITIONS IN IAȘI CITY |
| title_fullStr | NOx AND O3 VARIABILITY AND ITS RELATION WITH WEATHER CONDITIONS IN IAȘI CITY |
| title_full_unstemmed | NOx AND O3 VARIABILITY AND ITS RELATION WITH WEATHER CONDITIONS IN IAȘI CITY |
| title_short | NOx AND O3 VARIABILITY AND ITS RELATION WITH WEATHER CONDITIONS IN IAȘI CITY |
| title_sort | nox and o3 variability and its relation with weather conditions in iasi city |
| topic | ground level ozone oxides of nitrogen thermal inversion pearson correlation synoptic conditions |
| url | http://pesd.ro/articole/nr.13/nr.2/10432%20-Volume13_issue_2%2005_paper.pdf |
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