A Unique Mechanism of Ozone Surges Jointly Triggered by Deep Stratospheric Intrusions and the Tibetan Plateau Topographic Forcing
Abstract Given our poor understanding on mechanisms of stratospheric intrusions (SI) upon near‐surface ozone (O3) surges, predicting the SI‐induced O3 pollution pose inherent difficulties. Taking a wintertime O3 surge episode over the Sichuan Basin (SCB) as an example, we find SI contribute 47.8% to...
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| Format: | Article |
| Language: | English |
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Wiley
2025-05-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2024GL114207 |
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| author | Yuqing Zhang Tianliang Zhao Guicai Ning Xiangde Xu Zhixiong Chen Mengwei Jia Xiaoyun Sun Zhuozhi Shu Zhen Lu Jane Liu Xiushu Qie |
| author_facet | Yuqing Zhang Tianliang Zhao Guicai Ning Xiangde Xu Zhixiong Chen Mengwei Jia Xiaoyun Sun Zhuozhi Shu Zhen Lu Jane Liu Xiushu Qie |
| author_sort | Yuqing Zhang |
| collection | DOAJ |
| description | Abstract Given our poor understanding on mechanisms of stratospheric intrusions (SI) upon near‐surface ozone (O3) surges, predicting the SI‐induced O3 pollution pose inherent difficulties. Taking a wintertime O3 surge episode over the Sichuan Basin (SCB) as an example, we find SI contribute 47.8% to near‐surface O3 levels and reveal the underlying mechanisms. Tropopause folding nearly extends to the deep atmospheric boundary layer over the Tibetan Plateau (TP) due to topographic forcing, driving stratospheric O3 penetration into the TP's near‐surface. The intruded O3 is subsequently transported into the downstream SCB by strong downdrafts along the TP's leeward slope. Interestingly, the mountain‐plains solenoid between the TP and the SCB strengthens the downward intrusions of O3 during both daytime and nighttime, further amplifying the contribution of SI to the SCB's near‐surface O3 levels. This unique mechanism of O3 surges could provide new insights for the forecast of unexpected nocturnal high‐O3 episodes. |
| format | Article |
| id | doaj-art-3ba1afadc9294fcd97919afc8dbb8e93 |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-3ba1afadc9294fcd97919afc8dbb8e932025-08-20T02:05:13ZengWileyGeophysical Research Letters0094-82761944-80072025-05-015210n/an/a10.1029/2024GL114207A Unique Mechanism of Ozone Surges Jointly Triggered by Deep Stratospheric Intrusions and the Tibetan Plateau Topographic ForcingYuqing Zhang0Tianliang Zhao1Guicai Ning2Xiangde Xu3Zhixiong Chen4Mengwei Jia5Xiaoyun Sun6Zhuozhi Shu7Zhen Lu8Jane Liu9Xiushu Qie10Key Laboratory for Aerosol‐Cloud‐Precipitation of China Meteorological Administration Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and Technology Nanjing ChinaKey Laboratory for Aerosol‐Cloud‐Precipitation of China Meteorological Administration Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and Technology Nanjing ChinaKey Laboratory for Aerosol‐Cloud‐Precipitation of China Meteorological Administration Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and Technology Nanjing ChinaState Key Laboratory of Severe Weather Chinese Academy of Meteorological Sciences China Meteorological Administration Beijing ChinaKey Laboratory for Humid Subtropical Eco‐Geographical Processes of the Ministry of Education School of Geographical Sciences Fujian Normal University Fuzhou ChinaJiangsu Provincial Key Laboratory of Geographic Information Science and Technology International Institute for Earth System Science Nanjing University Nanjing ChinaAnhui Province Key Laboratory of Atmospheric Science and Satellite Remote Sensing Anhui Institute of Meteorological Sciences Hefei ChinaChengdu Fluid Dynamics Innovation Center Chengdu ChinaKey Laboratory for Aerosol‐Cloud‐Precipitation of China Meteorological Administration Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and Technology Nanjing ChinaKey Laboratory for Humid Subtropical Eco‐Geographical Processes of the Ministry of Education School of Geographical Sciences Fujian Normal University Fuzhou ChinaKey Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric Physics Chinese Academy of Sciences Beijing ChinaAbstract Given our poor understanding on mechanisms of stratospheric intrusions (SI) upon near‐surface ozone (O3) surges, predicting the SI‐induced O3 pollution pose inherent difficulties. Taking a wintertime O3 surge episode over the Sichuan Basin (SCB) as an example, we find SI contribute 47.8% to near‐surface O3 levels and reveal the underlying mechanisms. Tropopause folding nearly extends to the deep atmospheric boundary layer over the Tibetan Plateau (TP) due to topographic forcing, driving stratospheric O3 penetration into the TP's near‐surface. The intruded O3 is subsequently transported into the downstream SCB by strong downdrafts along the TP's leeward slope. Interestingly, the mountain‐plains solenoid between the TP and the SCB strengthens the downward intrusions of O3 during both daytime and nighttime, further amplifying the contribution of SI to the SCB's near‐surface O3 levels. This unique mechanism of O3 surges could provide new insights for the forecast of unexpected nocturnal high‐O3 episodes.https://doi.org/10.1029/2024GL114207stratospheric ozone intrusiontopographic forcingmountain‐plains solenoidTibetan PlateauSichuan Basin |
| spellingShingle | Yuqing Zhang Tianliang Zhao Guicai Ning Xiangde Xu Zhixiong Chen Mengwei Jia Xiaoyun Sun Zhuozhi Shu Zhen Lu Jane Liu Xiushu Qie A Unique Mechanism of Ozone Surges Jointly Triggered by Deep Stratospheric Intrusions and the Tibetan Plateau Topographic Forcing Geophysical Research Letters stratospheric ozone intrusion topographic forcing mountain‐plains solenoid Tibetan Plateau Sichuan Basin |
| title | A Unique Mechanism of Ozone Surges Jointly Triggered by Deep Stratospheric Intrusions and the Tibetan Plateau Topographic Forcing |
| title_full | A Unique Mechanism of Ozone Surges Jointly Triggered by Deep Stratospheric Intrusions and the Tibetan Plateau Topographic Forcing |
| title_fullStr | A Unique Mechanism of Ozone Surges Jointly Triggered by Deep Stratospheric Intrusions and the Tibetan Plateau Topographic Forcing |
| title_full_unstemmed | A Unique Mechanism of Ozone Surges Jointly Triggered by Deep Stratospheric Intrusions and the Tibetan Plateau Topographic Forcing |
| title_short | A Unique Mechanism of Ozone Surges Jointly Triggered by Deep Stratospheric Intrusions and the Tibetan Plateau Topographic Forcing |
| title_sort | unique mechanism of ozone surges jointly triggered by deep stratospheric intrusions and the tibetan plateau topographic forcing |
| topic | stratospheric ozone intrusion topographic forcing mountain‐plains solenoid Tibetan Plateau Sichuan Basin |
| url | https://doi.org/10.1029/2024GL114207 |
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