气候变化领域集成服务门户(CCPortal): Long-term deposition and condensation ice-nucleating particle measurements from four stations across the globe

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DOI	10.5194/acp-20-15983-2020
	Long-term deposition and condensation ice-nucleating particle measurements from four stations across the globe
	Schrod J.; Thomson E.S.; Weber D.; Kossmann J.; Pöhlker C.; Saturno J.; Ditas F.; Artaxo P.; Clouard V.; Saurel J.-M.; Ebert M.; Curtius J.; Bingemer H.G.
发表日期	2020
ISSN	1680-7316
起始页码	15983
结束页码	16006
卷号	20 期号:24
英文摘要	Ice particle activation and evolution have important atmospheric implications for cloud formation, initiation of precipitation and radiative interactions. The initial formation of atmospheric ice by heterogeneous ice nucleation requires the presence of a nucleating seed, an ice-nucleating particle (INP), to facilitate its first emergence. Unfortunately, only a few long-term measurements of INPs exist, and as a result, knowledge about geographic and seasonal variations of INP concentrations is sparse. Here we present data from nearly 2 years of INP measurements from four stations in different regions of the world: The Amazon (Brazil), the Caribbean (Martinique), central Europe (Germany) and the Arctic (Svalbard). The sites feature diverse geographical climates and ecosystems that are associated with dissimilar transport patterns, aerosol characteristics and levels of anthropogenic impact (ranging from near pristine to mostly rural). Interestingly, observed INP concentrations, which represent measurements in the deposition and condensation freezing modes, do not differ greatly from site to site but usually fall well within the same order of magnitude. Moreover, short-term variability overwhelms all long-term trends and/or seasonality in the INP concentration at all locations. An analysis of the frequency distributions of INP concentrations suggests that INPs tend to be well mixed and reflective of large-scale air mass movements. No universal physical or chemical parameter could be identified to be a causal link driving INP climatology, highlighting the complex nature of the ice nucleation process. Amazonian INP concentrations were mostly unaffected by the biomass burning season, even though aerosol concentrations increase by a factor of 10 from the wet to dry season. Caribbean INPs were positively correlated to parameters related to transported mineral dust, which is known to increase during the Northern Hemisphere summer. A wind sector analysis revealed the absence of an anthropogenic impact on average INP concentrations at the site in central Europe. Likewise, no Arctic haze influence was observed on INPs at the Arctic site, where low concentrations were generally measured. We consider the collected data to be a unique resource for the community that illustrates some of the challenges and knowledge gaps of the field in general, while specifically highlighting the need for more long-term observations of INPs worldwide. © 2020 Author(s).
英文关键词	aerosol; atmospheric deposition; cloud condensation nucleus; condensation; formation mechanism; geographical variation; measurement method; particulate matter; seasonal variation; transport process; Amazonia; Arctic; Brazil; Germany; Martinique; Svalbard; Svalbard and Jan Mayen; Windward Islands [Lesser Antilles]
语种	英语
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/168865
作者单位	Institute for Atmospheric and Environmental Sciences, Goethe University Frankfurt, Frankfurt am Main, Germany; Atmospheric Science, Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden; Biogeochemistry and Multiphase Chemistry Departments, Max Planck Institute for Chemistry, Mainz, Germany; Institute of Physics, University of Sao Paulo, Saõ Paulo, Brazil; Institut de Physique du Globe de Paris, Université de Paris, Paris, France; Institute of Applied Geosciences, Technical University of Darmstadt, Darmstadt, Germany; Federal Waterways Engineering and Research Institute, Karlsruhe, Germany; Physikalisch-Technische Bundesanstalt, Braunschweig, Germany; Hessisches Landesamt für Naturschutz, Umwelt und Geologie, Wiesbaden, Germany; Geósciences Environnement Toulouse, Toulouse, France
推荐引用方式 GB/T 7714	Schrod J.,Thomson E.S.,Weber D.,et al. Long-term deposition and condensation ice-nucleating particle measurements from four stations across the globe[J],2020,20(24).
APA	Schrod J..,Thomson E.S..,Weber D..,Kossmann J..,Pöhlker C..,...&Bingemer H.G..(2020).Long-term deposition and condensation ice-nucleating particle measurements from four stations across the globe.Atmospheric Chemistry and Physics,20(24).
MLA	Schrod J.,et al."Long-term deposition and condensation ice-nucleating particle measurements from four stations across the globe".Atmospheric Chemistry and Physics 20.24(2020).