海陆交换对崂山臭氧和二次气溶胶的影响

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Abstract To investigate the influence of multiscale sea-land exchange on surface ozone (O₃) and secondary aerosols in coastal China, a comprehensive field campaign was carried out at Mount Lao in the spring of 2021. By employing the HYSPLIT model, the air masses can be divided into three types, i.e., Continental, Marine, and Mixed types, according to their total length of crossing oceans. The probabilities of these air masses were 44.5%, 35.6%, and 19.9%, respectively. Compared to Marine and Mixed types, the net photoproduction of O₃ was more active under the control of Continental air masses, which can be up to 9.12×10^-9h^-1. The high-concentration night-time ozone under Continental and Mixed air masses controlled were related to sea-land breezes and ozone input from ocean regions, respectively. Furthermore, the difference in the composition of fine particulate matter (PM_2.5) under the control of different air masses types was also investigated. NO₃^– was the dominant water-soluble inorganic ions (WSIIs) in PM_2.5 for Continental air masses, which may be attributed to the promoted NO₃^– formation by the high concentration of NH₄⁺. SO₄^2– was the dominant WSIIs for Marine air masses, owing to the promoted SO₄^2– formation resulting from the higher relative humidity. These results confirmed the significant differences in the characteristics of atmospheric secondary pollutants in coastal areas under the control of different air masses.

Key words： sea-land exchange air mass classification Mount Lao ozone secondary aerosols

Received: 15 November 2022

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X513

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	Articles by authors
	ZHANG Ji
	HUANG Liu-bin
	ZHAO Min
	SUN Yue
	ZHAO Feng
	CHEN Tian-shu
	LIU Yu-hong
	LI Hong-yong
	SHAN Ye
	MU Jiang-shan
	JIANG Yue-ru
	WANG Xin-feng
	ZHU Yu-jiao
	SHEN Heng-qing
	DONG Can
	WANG Wen-xing
	XUE Li-kun

Cite this article:

ZHANG Ji,HUANG Liu-bin,ZHAO Min等. Effects of sea-land exchange on ozone and secondary aerosols in Mount Lao[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(6): 2683-2693.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I6/2683

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