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Updated: Jan 28, 2026

The Use of Induced Somatic Sector Analysis ISSA for Studying Genes and Promoters Involved in Wood Formation and Secondary Stem Development

The Use of Induced Somatic Sector Analysis ISSA for Studying Genes and Promoters Involved in Wood Formation and Secondary Stem Development

Published on: October 5, 2016

上層オゾン侵入が地上での冬季二次エアロゾル生成を促進する

Yuzheng Wang¹, Yongchun Liu¹, Feixue Zheng¹

¹Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.

National science review

|January 26, 2026

Abstract:

Upper-layer ozone (O₃) intrusion (ULOI) is an important source of surface O₃, affecting gas pollutants and secondary aerosol formation. However, no robust method has been reported to identify ULOI events based on ground observations and assess their effects on surface atmospheric chemistry. We propose a novel method to identify ULOI events by ranking O₃ concentrations before dawn and evaluate their contributions to ground-level O₃ and aerosol formation across China. Our results show that ULOI events occur at a rate of 22%-74% across China, with higher frequency in eastern and southern coastal regions. ULOI enhances ground-level O₃ by 13-43 ppbv at night and 3-14 ppbv during the day. This increases atmospheric oxidation capacity (AOC) and enhances the contribution of the O₃ oxidation path to sulfate and secondary organic aerosol (SOA) formation. This study emphasizes the importance of atmospheric layer interactions and the impact of ULOI events on surface atmospheric chemistry.

キーワード:

大気酸化能オゾン侵入二次エアロゾル

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