热带气旋–热浪复合事件对珠三角暖季臭氧污染的影响

刘雨林; 黎梓欣; 吴燕星; 刘润

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中国环境科学 ›› 2025, Vol. 45 ›› Issue (12) : 6552-6559.

大气污染与控制

热带气旋–热浪复合事件对珠三角暖季臭氧污染的影响

刘雨林¹, 黎梓欣¹, 吴燕星¹, 刘润^1,2

作者信息 +

Impact of tropical cyclone-heatwave compound events on ozone pollution in the Pearl River Delta during the warm season

LIU Yu-lin¹, LI Zi-xin¹, WU Yan-xing¹, LIU Run^1,2

Author information +

文章历史 +

摘要

基于2015~2023年暖季(6~9月)珠三角臭氧(O₃)每小时浓度数据、热带气旋数据和气象再分析数据,对比分析其他事件、单独热浪事件(HW)、单独热带气旋事件(TC)和热带气旋-热浪复合事件(TC–HW)对珠三角O₃的影响以及与O₃污染事件的年际变化关系.结果表明,TC–HW复合事件发生时,珠三角O₃浓度为(143.8±41.7) μg/m³,O₃浓度的平均增长率为21.4%,O₃超标率为36.8%.相比于其他事件、单独HW事件和单独TC事件,TC–HW复合事件使整个珠三角区域O₃浓度提高了38.3 μg/m³.TC–HW复合事件与珠三角O₃污染事件的年际变化呈现显著的正相关关系,其相关系数为0.68(P<0.05).TC–HW复合事件期间低云量、低湿度、低风速和强太阳辐射是导致珠三角O₃污染事件发生的关键气象因素.

Abstract

Based on the hourly ozone (O₃) concentration data, tropical cyclone (TC) data and meteorological reanalysis data in the Pearl River Delta (PRD) during the warm season (June-September) from 2015 to 2023, the impacts of various meteorological events, including isolated heat wave (HW) events, isolated TC events, and TC-HW compound events on O₃ in PRD and their interannual variation relationship with O₃ pollution events were compared and analyzed. The results showed that TC-HW compound events were associated with an average O₃ concentration of (143.8±41.7) μg/m³, representing a mean growth rate of 21.4%, and a 36.8% likelihood of O₃ pollution occurrence. Compared with other event categories, TC-HW compound events lead to an average regional O₃ increase of 38.3μg/m³. A statistically significant positive correlation (r=0.68, P<0.05) was identified between the frequency of TC-HW compound events and the interannual variability of O₃ pollution episodes. Meteorological conditions characterized by reduced cloud cover, low relative humidity, weakened wind speed, and enhanced solar radiation during the TC-HW compound events were identified as key drivers of increased O₃ concentrations in the PRD.

导出引用

刘雨林, 黎梓欣, 吴燕星, 刘润. 热带气旋–热浪复合事件对珠三角暖季臭氧污染的影响[J]. 中国环境科学. 2025, 45(12): 6552-6559

LIU Yu-lin, LI Zi-xin, WU Yan-xing, LIU Run. Impact of tropical cyclone-heatwave compound events on ozone pollution in the Pearl River Delta during the warm season[J]. China Environmental Science. 2025, 45(12): 6552-6559

中图分类号： X511

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