ENSO modulation of summertime tropospheric ozone over China
Ozone (O _3 ) is one of the most critical pollutants affecting air quality in China in recent years. In this study, different impacts of the El Niño–Southern Oscillation (ENSO) warm/cold phases on summertime tropospheric O _3 over China are examined based on model simulations, ground measurements, a...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2022-01-01
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| Series: | Environmental Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1748-9326/ac54cd |
| _version_ | 1797747041479163904 |
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| author | Yang Yang Mengyun Li Hailong Wang Huimin Li Pinya Wang Ke Li Meng Gao Hong Liao |
| author_facet | Yang Yang Mengyun Li Hailong Wang Huimin Li Pinya Wang Ke Li Meng Gao Hong Liao |
| author_sort | Yang Yang |
| collection | DOAJ |
| description | Ozone (O _3 ) is one of the most critical pollutants affecting air quality in China in recent years. In this study, different impacts of the El Niño–Southern Oscillation (ENSO) warm/cold phases on summertime tropospheric O _3 over China are examined based on model simulations, ground measurements, and reanalysis data. Summertime surface O _3 concentrations in China show a positive correlation with ENSO index during years 1990–2019, with the largest increases by 20% over southern China in El Niño (warm phase) relative to La Niña (cold phase) years. The ENSO modulation extends to the middle and even upper troposphere. Our analysis indicates that O _3 flux convergence associated with weakened southerlies is the primary reason for the increase in tropospheric O _3 over southern China. In addition, the O _3 increase during El Niño years is mainly from domestic emissions in China. This study highlights the potential significance of ENSO in modulating tropospheric O _3 concentrations in China, with great implications for O _3 pollution mitigation. |
| first_indexed | 2024-03-12T15:45:28Z |
| format | Article |
| id | doaj.art-d30b9a268eca4d1a9e8ef84236733aa1 |
| institution | Directory Open Access Journal |
| issn | 1748-9326 |
| language | English |
| last_indexed | 2024-03-12T15:45:28Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Letters |
| spelling | doaj.art-d30b9a268eca4d1a9e8ef84236733aa12023-08-09T15:28:15ZengIOP PublishingEnvironmental Research Letters1748-93262022-01-0117303402010.1088/1748-9326/ac54cdENSO modulation of summertime tropospheric ozone over ChinaYang Yang0https://orcid.org/0000-0002-9008-5137Mengyun Li1Hailong Wang2https://orcid.org/0000-0002-1994-4402Huimin Li3Pinya Wang4https://orcid.org/0000-0001-7034-7868Ke Li5https://orcid.org/0000-0002-9181-3562Meng Gao6https://orcid.org/0000-0002-8657-3541Hong Liao7https://orcid.org/0000-0001-6628-1798Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology , Nanjing, Jiangsu, People’s Republic of ChinaJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology , Nanjing, Jiangsu, People’s Republic of ChinaAtmospheric Sciences and Global Change Division , Pacific Northwest National Laboratory, Richland, WA, United States of AmericaJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology , Nanjing, Jiangsu, People’s Republic of ChinaJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology , Nanjing, Jiangsu, People’s Republic of ChinaJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology , Nanjing, Jiangsu, People’s Republic of ChinaDepartment of Geography, State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University , Hong Kong SAR, People’s Republic of ChinaJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology , Nanjing, Jiangsu, People’s Republic of ChinaOzone (O _3 ) is one of the most critical pollutants affecting air quality in China in recent years. In this study, different impacts of the El Niño–Southern Oscillation (ENSO) warm/cold phases on summertime tropospheric O _3 over China are examined based on model simulations, ground measurements, and reanalysis data. Summertime surface O _3 concentrations in China show a positive correlation with ENSO index during years 1990–2019, with the largest increases by 20% over southern China in El Niño (warm phase) relative to La Niña (cold phase) years. The ENSO modulation extends to the middle and even upper troposphere. Our analysis indicates that O _3 flux convergence associated with weakened southerlies is the primary reason for the increase in tropospheric O _3 over southern China. In addition, the O _3 increase during El Niño years is mainly from domestic emissions in China. This study highlights the potential significance of ENSO in modulating tropospheric O _3 concentrations in China, with great implications for O _3 pollution mitigation.https://doi.org/10.1088/1748-9326/ac54cdO3ChinaEl NiñoENSO |
| spellingShingle | Yang Yang Mengyun Li Hailong Wang Huimin Li Pinya Wang Ke Li Meng Gao Hong Liao ENSO modulation of summertime tropospheric ozone over China Environmental Research Letters O3 China El Niño ENSO |
| title | ENSO modulation of summertime tropospheric ozone over China |
| title_full | ENSO modulation of summertime tropospheric ozone over China |
| title_fullStr | ENSO modulation of summertime tropospheric ozone over China |
| title_full_unstemmed | ENSO modulation of summertime tropospheric ozone over China |
| title_short | ENSO modulation of summertime tropospheric ozone over China |
| title_sort | enso modulation of summertime tropospheric ozone over china |
| topic | O3 China El Niño ENSO |
| url | https://doi.org/10.1088/1748-9326/ac54cd |
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