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Severe level of photochemical oxidants (O(x)) over the western coast of Japan during autumn after typhoon passing
Photochemical oxidants (O(x); mainly O(3)) are a concern in East Asia. Because of the prevailing westerly wind in the midlatitudes, O(3) concentration generally shows a high in spring over Kyushu Island, western Japan, and O(x) warnings have been issued in spring. However, the record from 2000 to 20...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group UK
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10541868/ https://www.ncbi.nlm.nih.gov/pubmed/37773200 http://dx.doi.org/10.1038/s41598-023-43485-0 |
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author | Itahashi, Syuichi |
author_facet | Itahashi, Syuichi |
author_sort | Itahashi, Syuichi |
collection | PubMed |
description | Photochemical oxidants (O(x); mainly O(3)) are a concern in East Asia. Because of the prevailing westerly wind in the midlatitudes, O(3) concentration generally shows a high in spring over Kyushu Island, western Japan, and O(x) warnings have been issued in spring. However, the record from 2000 to 2021 of O(x) warning days in Kyushu Island contains one warning case in autumn 2020. Interestingly, a typhoon had passed the day before this O(x) warning. To relate these events, a modelling simulation was conducted and it showed the transboundary O(3) transport from the Asian continent to the western coast of Japan due to the strong wind field determined by the location of Typhoon Haishen (2020). The sensitivity simulations for changing Chinese anthropogenic sources suggested that both nitrogen oxides (NO(x)) and volatile organic compound (VOC) emission regulations in China could decrease high O(3) over the downwind region of Japan. Furthermore, VOC emission regulation in China led to an overall O(3) decrease in East Asia, whereas NO(x) emission regulation in China had complex effects of decreasing (increasing) O(3) during the daytime (nighttime) over China. The association between air quality and meteorology related to typhoons should be considered along with global warming in the future. |
format | Online Article Text |
id | pubmed-10541868 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-105418682023-10-02 Severe level of photochemical oxidants (O(x)) over the western coast of Japan during autumn after typhoon passing Itahashi, Syuichi Sci Rep Article Photochemical oxidants (O(x); mainly O(3)) are a concern in East Asia. Because of the prevailing westerly wind in the midlatitudes, O(3) concentration generally shows a high in spring over Kyushu Island, western Japan, and O(x) warnings have been issued in spring. However, the record from 2000 to 2021 of O(x) warning days in Kyushu Island contains one warning case in autumn 2020. Interestingly, a typhoon had passed the day before this O(x) warning. To relate these events, a modelling simulation was conducted and it showed the transboundary O(3) transport from the Asian continent to the western coast of Japan due to the strong wind field determined by the location of Typhoon Haishen (2020). The sensitivity simulations for changing Chinese anthropogenic sources suggested that both nitrogen oxides (NO(x)) and volatile organic compound (VOC) emission regulations in China could decrease high O(3) over the downwind region of Japan. Furthermore, VOC emission regulation in China led to an overall O(3) decrease in East Asia, whereas NO(x) emission regulation in China had complex effects of decreasing (increasing) O(3) during the daytime (nighttime) over China. The association between air quality and meteorology related to typhoons should be considered along with global warming in the future. Nature Publishing Group UK 2023-09-29 /pmc/articles/PMC10541868/ /pubmed/37773200 http://dx.doi.org/10.1038/s41598-023-43485-0 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Itahashi, Syuichi Severe level of photochemical oxidants (O(x)) over the western coast of Japan during autumn after typhoon passing |
title | Severe level of photochemical oxidants (O(x)) over the western coast of Japan during autumn after typhoon passing |
title_full | Severe level of photochemical oxidants (O(x)) over the western coast of Japan during autumn after typhoon passing |
title_fullStr | Severe level of photochemical oxidants (O(x)) over the western coast of Japan during autumn after typhoon passing |
title_full_unstemmed | Severe level of photochemical oxidants (O(x)) over the western coast of Japan during autumn after typhoon passing |
title_short | Severe level of photochemical oxidants (O(x)) over the western coast of Japan during autumn after typhoon passing |
title_sort | severe level of photochemical oxidants (o(x)) over the western coast of japan during autumn after typhoon passing |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10541868/ https://www.ncbi.nlm.nih.gov/pubmed/37773200 http://dx.doi.org/10.1038/s41598-023-43485-0 |
work_keys_str_mv | AT itahashisyuichi severelevelofphotochemicaloxidantsoxoverthewesterncoastofjapanduringautumnaftertyphoonpassing |