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DOI	10.5194/acp-19-5293-2019
	Annual variability of ice-nucleating particle concentrations at different Arctic locations
	Wex H.; Huang L.; Zhang W.; Hung H.; Traversi R.; Becagli S.; Sheesley R.J.; Moffett C.E.; Barrett T.E.; Bossi R.; Skov H.; Hünerbein A.; Lubitz J.; Löffler M.; Linke O.; Hartmann M.; Herenz P.; Stratmann F.
发表日期	2019
ISSN	16807316
起始页码	5293
结束页码	5311
卷号	19 期号:7
英文摘要	Number concentrations of ice-nucleating particles (NINP) in the Arctic were derived from ground-based filter samples. Examined samples had been collected in Alert (Nunavut, northern Canadian archipelago on Ellesmere Island), Utqiagvik, formerly known as Barrow (Alaska), Nyalesund (Svalbard), and at the Villum Research Station (VRS; northern Greenland). For the former two stations, examined filters span a full yearly cycle. For VRS, 10 weekly samples, mostly from different months of one year, were included. Samples from Ny-Alesund were collected during the months from March until September of one year. At all four stations, highest concentrations were found in the summer months from roughly June to September. For those stations with sufficient data coverage, an annual cycle can be seen. The spectra of NINP observed at the highest temperatures, i.e., those obtained for summer months, showed the presence of INPs that nucleate ice up to-5 °C. Although the nature of these highly ice-active INPs could not be determined in this study, it often has been described in the literature that ice activity observed at such high temperatures originates from the presence of ice-active material of biogenic origin. Spectra observed at the lowest temperatures, i.e., those derived for winter months, were on the lower end of the respective values from the literature on Arctic INPs or INPs from midlatitude continental sites, to which a comparison is presented herein. An analysis concerning the origin of INPs that were ice active at high temperatures was carried out using back trajectories and satellite information. Both terrestrial locations in the Arctic and the adjacent sea were found to be possible source areas for highly active INPs. © 2019 Author(s).
语种	英语
scopus关键词	annual variation; concentration (composition); filter; ground-based measurement; ice; nucleation; particulate matter; Alaska; Alert; Arctic; Barrow; Canada; Ellesmere Island; Greenland; Nunavut; Ny-Alesund; Queen Elizabeth Islands; Spitsbergen; Svalbard; Svalbard and Jan Mayen; United States
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/144470
作者单位	Experimental Aerosol and Cloud Microphysics, Leibniz Institute for Tropospheric Research (TROPOS), Leipzig, Germany; Climate Research Division, Atmospheric Science and Technology Direct., STB, Environment and Climate Change Canada, Toronto, Canada; Air Quality Processes Research Section, Environment and Climate Change Canada, Toronto, Canada; Department of Chemistry ugo Schiff, University of Florence, Florence, Italy; Department of Environmental Science, Baylor University, Waco, TX, United States; Department of Environmental Science, ICLIMATE, Aarhus University, Roskilde, Denmark; Deutscher Wetterdienst, Zentrum für Agrarmeteorologische Forschung Braunschweig (ZAMF), Braunschweig, Germany; Senate Department for the Environment, Transport and Climate Protection, Berlin, Germany
推荐引用方式 GB/T 7714	Wex H.,Huang L.,Zhang W.,et al. Annual variability of ice-nucleating particle concentrations at different Arctic locations[J],2019,19(7).
APA	Wex H..,Huang L..,Zhang W..,Hung H..,Traversi R..,...&Stratmann F..(2019).Annual variability of ice-nucleating particle concentrations at different Arctic locations.Atmospheric Chemistry and Physics,19(7).
MLA	Wex H.,et al."Annual variability of ice-nucleating particle concentrations at different Arctic locations".Atmospheric Chemistry and Physics 19.7(2019).