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Characterization of aerosol properties at Cyprus, focusing on cloud condensation nuclei and ice-nucleating particles

Gong, Xianda; Wex, Heike; Müller, Thomas; Wiedensohler, Alfred; Höhler, Kristina; Kandler, Konrad; Ma, Nan; Dietel, Barbara; Schiebel, Thea; Möhler, Ottmar; Stratmann, Frank

Abstract:
As part of the A-LIFE (Absorbing aerosol layers in a changing climate: aging, LIFEtime and dynamics) campaign, ground-based measurements were carried out in Paphos, Cyprus, to characterize the abundance, properties, and sources of aerosol particles in general and cloud condensation nuclei (CCN) and ice-nucleating particles (INP) in particular. New particle formation (NPF) events with subsequent growth of the particles into the CCN size range were observed. Aitken mode particles featured κ values of 0.21 to 0.29, indicating the presence of organic materials. Accumulation mode particles featured a higher hygroscopicity parameter, with a median κ value of 0.57, suggesting the presence of sulfate and maybe sea salt particles mixed with organic carbon. A clear downward trend of κ with increasing supersaturation and decreasing dcrit was found. Super-micron particles originated mainly from sea-spray aerosol (SSA) and partly from mineral dust. INP concentrations (NINP) were measured in the temperature range from -6.5 to -26.5 °C, using two freezing array-type instruments. NINP at a particular temperature span around 1 order of magnitude below -20 °C and about 2 orders of magnitude at warmer temperatures (T > -18 °C). ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000099192
Veröffentlicht am 22.10.2019
Originalveröffentlichung
DOI: 10.5194/acp-19-10883-2019
Scopus
Zitationen: 5
Web of Science
Zitationen: 4
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Aerosolforschung (IMK-AAF)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 1680-7324
KITopen-ID: 1000099192
HGF-Programm 12.01.01 (POF III, LK 01)
Clouds in a pertubed atmosphere
Erschienen in Atmospheric chemistry and physics
Band 19
Heft 16
Seiten 10883–10900
Vorab online veröffentlicht am 29.08.2019
Nachgewiesen in Scopus
Web of Science
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