气候变化领域集成服务门户(CCPortal): Real-time measurements of PM2.5 water-soluble inorganic ions at a high-altitude mountain site in the western North Pacific: Impact of upslope wind and long-range transported biomass-burning smoke

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DOI	10.1016/j.atmosres.2021.105686
	Real-time measurements of PM2.5 water-soluble inorganic ions at a high-altitude mountain site in the western North Pacific: Impact of upslope wind and long-range transported biomass-burning smoke
	Chen W.-R.; Singh A.; Pani S.K.; Chang S.-Y.; Chou C.C.-K.; Chang S.-C.; Chuang M.-T.; Lin N.-H.; Huang C.-H.; Lee C.-T.
发表日期	2021
ISSN	0169-8095
卷号	260
英文摘要	Real-time measurement of PM2.5 (particulate matter with aerodynamic diameter ≤ 2.5 μm) water-soluble inorganic ions (WSIIs) was conducted at Lulin Atmospheric Background Station (LABS; 2862 m above mean sea level) in the western North Pacific (WNP) during the autumn 2015 and spring 2016. During autumn, the mountain-valley (M-V) circulation is effective in increasing the mass concentrations of PM2.5, WSIIs, and carbon monoxide (CO) at LABS from 12:00 to 18:00 local time every day. In sharp contrast to autumn, five high aerosol-loading events were recorded during the spring, with each event persisting for a few days. These events were harmonized with the long-range transport of biomass-burning (BB) smoke emissions from northern peninsular Southeast Asia (PSEA), as disclosed from the fire count map and backward trajectories. The plumes appear to mask their characteristic diurnal features driven by the local M-V circulation. During both seasons, the prominent pathway of SO2 to SO42− conversion was aqueous phase oxidation as revealed from the relationship between sulfur oxidation ratio (SOR) and aerosol liquid-water content. Furthermore, NO3− was found to be produced primarily via homogeneous reactions during the spring season. The optical measurements were also made along with the semi-continuous measurements of WSIIs in this study. The magnitude of aerosol scattering and absorption coefficients exhibited high values when LABS was either under the influence of M-V circulation or long-range BB transport, although the latter event was apparently greater. Large surface cooling (up to −30.8 W m−2) and atmospheric warming (up to +21.3 W m−2) at LABS attributed to absorption enhancement by BB-induced aerosols can potentially influence the regional radiation budget. © 2021 Elsevier B.V.
英文关键词	Biomass burning; Distant transport; High-elevation site; Radiative implication; Semi-continuous aerosol ionic species
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236691
作者单位	Graduate Institute of Environmental Engineering, National Central University, Taoyuan, 320, Taiwan; Department of Environmental Studies, University of Delhi, Delhi, 110007, India; Department of Atmospheric Sciences, National Central University, Taoyuan, 320, Taiwan; Department of Public Health, Chung Shan Medical University, Taichung, 402, Taiwan; Research Center for Environmental Changes, Academia Sinica, Taipei, 115, Taiwan; School of Public Health, National Defense Medical Center, Taipei, 114, Taiwan; Environmental Protection Administration, Taipei, 100, Taiwan; Center for Environmental Monitoring Technology, National Central University, Taoyuan, 320, Taiwan
推荐引用方式 GB/T 7714	Chen W.-R.,Singh A.,Pani S.K.,et al. Real-time measurements of PM2.5 water-soluble inorganic ions at a high-altitude mountain site in the western North Pacific: Impact of upslope wind and long-range transported biomass-burning smoke[J],2021,260.
APA	Chen W.-R..,Singh A..,Pani S.K..,Chang S.-Y..,Chou C.C.-K..,...&Lee C.-T..(2021).Real-time measurements of PM2.5 water-soluble inorganic ions at a high-altitude mountain site in the western North Pacific: Impact of upslope wind and long-range transported biomass-burning smoke.Atmospheric Research,260.
MLA	Chen W.-R.,et al."Real-time measurements of PM2.5 water-soluble inorganic ions at a high-altitude mountain site in the western North Pacific: Impact of upslope wind and long-range transported biomass-burning smoke".Atmospheric Research 260(2021).