Consecutive Northward Super Typhoons Induced Extreme Ozone Pollution Events in Eastern China

IF 8.5 1区地球科学 Q1 METEOROLOGY & ATMOSPHERIC SCIENCES

npj Climate and Atmospheric Science Pub Date : 2024-10-10 DOI:10.1038/s41612-024-00786-z

Jiahe Wang, Peng Wang, Chunfeng Tian, Meng Gao, Tiantao Cheng, Wei Mei

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Abstract

Typhoons are one of the most important weather systems that can cause severe ozone (O3) pollution in eastern China. While the effects of individual typhoons on O3 concentrations have been extensively studied, the effects of consecutive northward typhoons and the underlying mechanisms remain unclear, partly due to the complex processes involved. Here, Typhoons Maysak and Haishen, two consecutive northward typhoons in 2020, are selected to investigate their impact on the O3 pollution in eastern China. The results show that consecutive northward typhoons not only produced and maintained meteorological conditions conducive to O3 generation (e.g., elevated temperatures and intensified solar radiation), but also facilitated local accumulation and cross-regional transport of O3. These factors jointly led to a 30% increase in O3 concentration in eastern China with a prolonged period of O3 pollution. Our work underscores the significance of complex meteorological conditions in O3 pollution occurrences during extreme weather events, advancing our understanding of how consecutive northward typhoons affect air quality.

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连续北上的超强台风诱发华东地区极端臭氧污染事件

台风是导致中国东部地区臭氧（O3）严重污染的最重要天气系统之一。虽然单个台风对臭氧浓度的影响已被广泛研究，但连续北上台风的影响及其内在机制仍不清楚，部分原因是其中涉及复杂的过程。本文选取 2020 年连续北上的两个台风 "麦莎 "和 "海神"，研究其对华东地区臭氧污染的影响。结果表明，连续北上的台风不仅产生并维持了有利于O3生成的气象条件（如温度升高和太阳辐射增强），还促进了O3的本地累积和跨区域传输。在这些因素的共同作用下，华东地区的 O3 浓度增加了 30%，O3 污染时间延长。我们的研究强调了复杂气象条件在极端天气事件中造成 O3 污染的重要意义，加深了我们对连续北上台风如何影响空气质量的理解。

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来源期刊

npj Climate and Atmospheric Science Earth and Planetary Sciences-Atmospheric Science

CiteScore

8.80

自引率

3.30%

发文量

审稿时长

21 weeks

期刊介绍： npj Climate and Atmospheric Science is an open-access journal encompassing the relevant physical, chemical, and biological aspects of atmospheric and climate science. The journal places particular emphasis on regional studies that unveil new insights into specific localities, including examinations of local atmospheric composition, such as aerosols. The range of topics covered by the journal includes climate dynamics, climate variability, weather and climate prediction, climate change, ocean dynamics, weather extremes, air pollution, atmospheric chemistry (including aerosols), the hydrological cycle, and atmosphere–ocean and atmosphere–land interactions. The journal welcomes studies employing a diverse array of methods, including numerical and statistical modeling, the development and application of in situ observational techniques, remote sensing, and the development or evaluation of new reanalyses.