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表面臭氧在珍珠河三角洲的时间和空间范围内迅速扩散

Tianhui Cao¹, Haichao Wang¹, Lei Li¹

¹School of Atmospheric Sciences, Sun Yat-sen University and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China; Guangdong Provincial Observation and Research Station for Climate Environment and Air Quality Change in the Pearl River Estuary, Key Laboratory of Tropical Atmosphere-Ocean System, Ministry of Education, Zhuhai 519082, China.

Journal of environmental sciences (China)

|November 18, 2023

概括

表面臭氧污染在中国的珍珠河三角洲 (PRD) 正在增加,季节性差异很大,全年存在度越来越大. 持续的高臭氧超值日构成一个主要的缓解挑战.

科学领域:

环境科学环境科学
大气化学大气化学
空气质量监测空气质量监测

背景情况:

表面臭氧 (O3) 是一个关键的空气污染物,在中国珍珠河三角洲 (PRD) 越来越令人担忧.
了解其时空变化对于有效的环境管理至关重要.

研究的目的:

描述PRD地区表面臭氧的时空变异性.
分析臭氧趋势,确定污染热点,并评估2013-2019年间的超标模式.

主要方法:

从2013年到2019年,利用了来自中国人民共和国57个国家监测站点的数据.
分析了季节性差异,每日最大8小时平均值 (MDA8 O3) 趋势以及臭氧的空间分布.
研究连续与分散的超值日及其特征.

主要成果:

观察到重要的季节性臭氧差异,受季风风格和当地的大气化学成分的影响.
在整个PRD检测到MDA8 O3 (1.11ppbv/年) 的持续上升趋势,与城市特定的变化.
臭氧污染热点向西南移动,污染延伸到冬季和春季,成为全年性的问题.
持续超标日,以较高的臭氧度为特征,增加,特别是在中部和西南部的PRD城市.

结论:

在PRD中臭氧污染表现出由气象和化学因素驱动的复杂的时空动态.
持续超标臭氧数量的日益增加的频率和强度对该地区的污染减缓工作构成了重大挑战.
需要有针对性的战略来解决PRD持续和日益恶化的臭氧污染问题.

关键词:

臭氧层的发展趋势珍珠河三角洲是什么意思减轻污染减轻污染的影响空间和时间的可变性.表面臭氧污染表面臭氧污染

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Primary Production

Primary Production

The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.