气候变化领域集成服务门户(CCPortal): Repeatability of INP activation from the vapor

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DOI	10.1016/j.atmosres.2020.105030
	Repeatability of INP activation from the vapor
	Santachiara G.; Belosi F.
发表日期	2020
ISSN	0169-8095
卷号	243
英文摘要	Laboratory generated aerosols and aerosol sampled in a field campaign were studied to assess the repeatability of heterogeneous ice activation processes and verify if the ice nuclei particles maintained their nucleating capability. Experiments were performed using a filter technique, i.e. aerosol particles were sampled on black-gridded cellulose nitrate membrane filters and assessed for ice nucleating particles in a dynamic filter-processing chamber at our ISAC-CNR laboratory. The laboratory investigations used Arizona Test Dust (ATD) generated by nebulizing a suspension of ATD. After nebulization, the wet aerosol in the carrier gas was dried and then sampled on a filter. Aerosol field sampling (size range PM1 and PM10) was carried out in the Arctic (Ny-Ålesund, Svalbard) from 12 to 23 April 2019. The activation processes were repeated twice for each filter at temperatures of −22 °C and −18 °C. For aerosol, ATD runs were performed only in conditions of supersaturation (saturation ratio Sw = 1.02), while for the Arctic aerosol, conditions below saturation were also considered (Sw = 0.96). The experiments showed that approximately 40% of the ATD particles maintain their initial nucleating efficiency, both at T = −22 °C and − 18 °C, and at Sw = 1.02, i.e. in the condensation freezing mode. The percentage of repeatability was higher for ATD with respect to the Artic-sampled aerosol processed in the condensation mode. This may depend on greater particle morphology variation of the mixed organic-inorganic aerosol due to the hydration and dehydration cycle. © 2020 Elsevier B.V.
英文关键词	Condensation nucleation; Deposition nucleation; Ice activation; Ice nucleating particles; Ice nucleation repeatability
语种	英语
scopus关键词	Arctic vehicles; Chemical activation; Condensation; Ice; Supersaturation; Activation process; Aerosol particles; Arizona test dust; Cellulose nitrate membrane filters; Filter techniques; Laboratory investigations; Organic-inorganic; Particle morphologies; Aerosols; aerosol; atmospheric deposition; chemical reaction; condensation; ice; nucleation; water vapor; Activation; Aerosols; Condensation; Experimentation; Filters; Ice; Particles; Supersaturation; Arctic; Ny-Alesund; Spitsbergen; Svalbard; Svalbard and Jan Mayen
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/141873
作者单位	Institute of Atmospheric Sciences and Climate, ISAC-CNR, via Gobetti, Bologna, 40129, Italy
推荐引用方式 GB/T 7714	Santachiara G.,Belosi F.. Repeatability of INP activation from the vapor[J],2020,243.
APA	Santachiara G.,&Belosi F..(2020).Repeatability of INP activation from the vapor.Atmospheric Research,243.
MLA	Santachiara G.,et al."Repeatability of INP activation from the vapor".Atmospheric Research 243(2020).