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      Enhanced near-surface ozone under heatwave conditions in a Mediterranean island

      , 1 , 1 , 2

      Scientific Reports

      Nature Publishing Group UK

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          Abstract

          Near-surface ozone is enhanced under particular chemical reactions and physical processes. This study showed the seasonal variation of near-surface ozone in Nicosia, Cyprus and focused in summers when the highest ozone levels were noted using a seven year hourly dataset from 2007 to 2014. The originality of this study is that it examines how ozone levels changed under heatwave conditions (defined as 4 consecutive days with daily maximum temperature over 39 °C) with emphasis on specific air quality and meteorological parameters with respect to non-heatwave summer conditions. The influencing parameters had a medium-strong positive correlation of ozone with temperature, UVA and UVB at daytime which increased by about 35% under heatwave conditions. The analysis of the wind pattern showed a small decrease of wind speed during heatwaves leading to stagnant weather conditions, but also revealed a steady diurnal cycle of wind speed reaching a peak at noon, when the highest ozone levels were noted. The negative correlation of NOx budget with ozone was further increased under heatwave conditions leading to steeper lows of ozone in the morning. In summary, this research encourages further analysis into the persistent weather conditions prevalent during HWs stimulating ozone formation for higher temperatures.

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          Most cited references 25

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              Climate change: Potential effects of increased atmospheric Carbon dioxide (CO2), ozone (O3), and ultraviolet-B (UV-B) radiation on plant diseases

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                Author and article information

                Contributors
                a.pyrgou@cyi.ac.cy
                Journal
                Sci Rep
                Sci Rep
                Scientific Reports
                Nature Publishing Group UK (London )
                2045-2322
                15 June 2018
                15 June 2018
                2018
                : 8
                Affiliations
                [1 ]ISNI 0000 0004 0580 3152, GRID grid.426429.f, Energy, Environment and Water Research Center, , The Cyprus Institute, P.O. Box 27456, ; Nicosia, 1645 Cyprus
                [2 ]ISNI 0000 0004 4902 0432, GRID grid.1005.4, The Anita Lawrence Chair in High Performance Architecture, , School of Built Environment, University of New South Wales, ; Sydney, 2052 Australia
                Article
                27590
                10.1038/s41598-018-27590-z
                6003925
                29907840
                © The Author(s) 2018

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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