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Concurrent Heat Waves and Extreme Ozone (O 3 ) Episodes: Combined Atmospheric Patterns and Impact on Human Health

Author

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  • Kenza Khomsi

    (General Directorate of Meteorology, B.P. 8106, Casablanca P.O. Box 5696, Morocco
    Laboratory of Chemistry-Biochemistry, Environment, Nutrition and Health, Faculty of Medicine and Pharmacy, Hassan II University, Ain Chock, Casablanca P.O. Box 5696, Morocco
    International School of Public Health, Mohammed VI University for Health Sciences, Casablanca P.O. Box 5696, Morocco)

  • Youssef Chelhaoui

    (General Directorate of Meteorology, B.P. 8106, Casablanca P.O. Box 5696, Morocco)

  • Soukaina Alilou

    (Department of Hydraulics Environment & Climate, Hassania School for Public Works, Casablanca P.O. Box 5696, Morocco)

  • Rania Souri

    (Department of Hydraulics Environment & Climate, Hassania School for Public Works, Casablanca P.O. Box 5696, Morocco)

  • Houda Najmi

    (General Directorate of Meteorology, B.P. 8106, Casablanca P.O. Box 5696, Morocco)

  • Zineb Souhaili

    (Laboratory of Chemistry-Biochemistry, Environment, Nutrition and Health, Faculty of Medicine and Pharmacy, Hassan II University, Ain Chock, Casablanca P.O. Box 5696, Morocco)

Abstract

More recurrent heat waves and extreme ozone (O 3 ) episodes are likely to occur during the next decades and a key question is about the concurrence of those hazards, the atmospheric patterns behind their appearance, and their joint effect on human health. In this work, we use surface maximum temperature and O 3 observations during extended summers in two cities from Morocco: Casablanca and Marrakech, between 2010 and 2019. We assess the connection between these data and climate indices (North Atlantic Oscillation (NAO), Mediterranean Oscillation (MO), and Saharan Oscillation (SaO)). We then identify concurrent heat waves and O 3 episodes, the weather type behind this concurrence, and the combined health risks. Our findings show that the concurrence of heat waves and O 3 episodes depends both on the specific city and the large-scale atmospheric circulation. The likely identified synoptic pattern is when the country is under the combined influence of an anticyclonic area in the north and the Saharan trough extending the depression centered in the south. This pattern generates a warm flow and may foster photochemical pollution. Our study is the first step toward the establishment of an alert system. It will help to provide recommendations for coping with concurrent heat waves and air pollution episodes.

Suggested Citation

  • Kenza Khomsi & Youssef Chelhaoui & Soukaina Alilou & Rania Souri & Houda Najmi & Zineb Souhaili, 2022. "Concurrent Heat Waves and Extreme Ozone (O 3 ) Episodes: Combined Atmospheric Patterns and Impact on Human Health," IJERPH, MDPI, vol. 19(5), pages 1-15, February.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:5:p:2770-:d:760045
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    References listed on IDEAS

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    1. Meiyun Lin & Larry W. Horowitz & Yuanyu Xie & Fabien Paulot & Sergey Malyshev & Elena Shevliakova & Angelo Finco & Giacomo Gerosa & Dagmar Kubistin & Kim Pilegaard, 2020. "Publisher Correction: Vegetation feedbacks during drought exacerbate ozone air pollution extremes in Europe," Nature Climate Change, Nature, vol. 10(8), pages 791-791, August.
    2. Pablo Méndez-Lázaro & Frank E. Muller-Karger & Daniel Otis & Matthew J. McCarthy & Marisol Peña-Orellana, 2014. "Assessing Climate Variability Effects on Dengue Incidence in San Juan, Puerto Rico," IJERPH, MDPI, vol. 11(9), pages 1-20, September.
    3. Júlio Barboza Chiquetto & Maria Elisa Siqueira Silva & William Cabral-Miranda & Flávia Noronha Dutra Ribeiro & Sergio Alejandro Ibarra-Espinosa & Rita Yuri Ynoue, 2019. "Air Quality Standards and Extreme Ozone Events in the São Paulo Megacity," Sustainability, MDPI, vol. 11(13), pages 1-14, July.
    4. Meiyun Lin & Larry W. Horowitz & Yuanyu Xie & Fabien Paulot & Sergey Malyshev & Elena Shevliakova & Angelo Finco & Giacomo Gerosa & Dagmar Kubistin & Kim Pilegaard, 2020. "Vegetation feedbacks during drought exacerbate ozone air pollution extremes in Europe," Nature Climate Change, Nature, vol. 10(5), pages 444-451, May.
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    Cited by:

    1. Nan-Ji Jiang & Hetan Chang & Jerrit Weißflog & Franziska Eberl & Daniel Veit & Kerstin Weniger & Bill S. Hansson & Markus Knaden, 2023. "Ozone exposure disrupts insect sexual communication," Nature Communications, Nature, vol. 14(1), pages 1-7, December.

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