气候变化领域集成服务门户(CCPortal): Ice-nucleating particle concentration measurements from Ny-Ålesund during the Arctic spring-summer in 2018

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DOI	10.5194/acp-21-14725-2021
	Ice-nucleating particle concentration measurements from Ny-Ålesund during the Arctic spring-summer in 2018
	Rinaldi M.; Hiranuma N.; Santachiara G.; Mazzola M.; Mansour K.; Paglione M.; Rodriguez C.A.; Traversi R.; Becagli S.; Cappelletti D.; Belosi F.
发表日期	2021
ISSN	1680-7316
起始页码	14725
结束页码	14748
卷号	21 期号:19
英文摘要	In this study, we present atmospheric ice-nucleating particle (INP) concentrations from the Gruvebadet (GVB) observatory in Ny-Ålesund (Svalbard). All aerosol particle sampling activities were conducted in April-August 2018. Ambient INP concentrations (nINP) were measured for aerosol particles collected on filter samples by means of two offline instruments: The Dynamic Filter Processing Chamber (DFPC) and the West Texas Cryogenic Refrigerator Applied to Freezing Test system (WT-CRAFT) to assess condensation and immersion freezing, respectively. DFPC measured nINPs for a set of filters collected through two size-segregated inlets: one for transmitting particulate matter of less than 1gμm (PM1), the other for particles with an aerodynamic diameter of less than 10gμm aerodynamic diameter (PM10). Overall, nINPPM10 measured by DFPC at a water saturation ratio of 1.02 ranged from 3 to 185gm-3 at temperatures (Ts) of-15 to-22ggC. On average, the super-micrometer INP (nINPPM10-nINPPM1) accounted for approximately 20g%-30g% of nINPPM10 in spring, increasing in summer to 45g% at-22ggC and 65g% at-15ggC. This increase in super-micrometer INP fraction towards summer suggests that super-micrometer aerosol particles play an important role as the source of INPs in the Arctic. For the same T range, WT-CRAFT measured 1 to 199gm-3. Although the two nINP datasets were in general agreement, a notable nINP offset was observed, particularly at-15ggC. Interestingly, the results of both DFPC and WT-CRAFT measurements did not show a sharp increase in nINP from spring to summer. While an increase was observed in a subset of our data (WT-CRAFT, between-18 and-21ggC), the spring-To-summer nINP enhancement ratios never exceeded a factor of 3. More evident seasonal variability was found, however, in our activated fraction (AF) data, calculated by scaling the measured nINP to the total aerosol particle concentration. In 2018, AF increased from spring to summer. This seasonal AF trend corresponds to the overall decrease in aerosol concentration towards summer and a concomitant increase in the contribution of super-micrometer particles. Indeed, the AF of coarse particles resulted markedly higher than that of sub-micrometer ones (2 orders of magnitude). Analysis of low-Traveling back-Trajectories and meteorological conditions at GVB matched to our INP data suggests that the summertime INP population is influenced by both terrestrial (snow-free land) and marine sources. Our spatiotemporal analyses of satellite-retrieved chlorophyll a, as well as spatial source attribution, indicate that the maritime INPs at GVB may come from the seawaters surrounding the Svalbard archipelago and/or in proximity to Greenland and Iceland during the observation period. Nevertheless, further analyses, performed on larger datasets, would be necessary to reach firmer and more general conclusions. © 2021 Matteo Rinaldi et al.
语种	英语
scopus关键词	aerodynamics; concentration (composition); condensation; data set; freezing; nucleation; particle size; particulate matter; seasonal variation; spring (season); summer; Arctic; Arctic; Greenland; Iceland; Ny-Alesund; Spitsbergen; Svalbard; Svalbard and Jan Mayen
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246535
作者单位	Institute of Atmospheric Sciences and Climate (ISAC), National Research Council (CNR), Bologna, 40129, Italy; Department of Life, Earth and Environmental Sciences, West Texas AandM University, Canyon, TX, United States; Institute of Polar Sciences (ISP), National Research Council (CNR), Bologna, 40129, Italy; Department of Physics and Astronomy, University of Bologna, Bologna, 40127, Italy; Department of Oceanography, Faculty of Science, University of Alexandria, Alexandria, 21511, Egypt; Department of Chemistry "ugo Schiff", University of Florence, Florence, 50019, Italy; Dipartimento di Chimica, Biologia e Biotecnologie, Università Degli Studi di Perugia, Perugia, 06123, Italy
推荐引用方式 GB/T 7714	Rinaldi M.,Hiranuma N.,Santachiara G.,et al. Ice-nucleating particle concentration measurements from Ny-Ålesund during the Arctic spring-summer in 2018[J],2021,21(19).
APA	Rinaldi M..,Hiranuma N..,Santachiara G..,Mazzola M..,Mansour K..,...&Belosi F..(2021).Ice-nucleating particle concentration measurements from Ny-Ålesund during the Arctic spring-summer in 2018.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(19).
MLA	Rinaldi M.,et al."Ice-nucleating particle concentration measurements from Ny-Ålesund during the Arctic spring-summer in 2018".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.19(2021).