Ice residual properties in mixed‐phase clouds at the high‐alpine Jungfraujoch site
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Autor:innen
Kupiszewski, Piotr
Zanatta, Marco
Mertes, Stephan
Vochezer, Paul
Lloyd, Gary
Schneider, Johannes
Schenk, Ludwig
Schnaiter, Martin
Baltensperger, Urs
Autor:in (Körperschaft)
Publikationsdatum
2016
Typ der Arbeit
Studiengang
Typ
01A - Beitrag in wissenschaftlicher Zeitschrift
Herausgeber:innen
Herausgeber:in (Körperschaft)
Betreuer:in
Übergeordnetes Werk
Journal of Geophysical Research: Atmospheres
Themenheft
DOI der Originalpublikation
Link
Reihe / Serie
Reihennummer
Jahrgang / Band
121
Ausgabe / Nummer
20
Seiten / Dauer
12343-12362
Patentnummer
Verlag / Herausgebende Institution
Wiley
Verlagsort / Veranstaltungsort
Weinheim
Auflage
Version
Programmiersprache
Abtretungsempfänger:in
Praxispartner:in/Auftraggeber:in
Zusammenfassung
Ice residual (IR) and total aerosol properties were measured in mixed‐phase clouds (MPCs) at the high‐alpine Jungfraujoch research station. Black carbon (BC) content and coating thickness of BC‐containing particles were determined using single‐particle soot photometers. The ice activated fraction (IAF), derived from a comparison of IR and total aerosol particle size distributions, showed an enrichment of large particles in the IR, with an increase in the IAF from values on the order of 10−4to 10 for 100 nm (diameter) particles to 0.2 to 0.3 for 1 μm (diameter) particles. Nonetheless, due to the high number fraction of submicrometer particles with respect to total particle number, IR size distributions were still dominated by the submicrometer aerosol. A comparison of simultaneously measured number size distributions of BC‐free and BC‐containing IR and total aerosol particles showed depletion of BC by number in the IR, suggesting that BC does not play a significant role in ice nucleation in MPCs at the Jungfraujoch. The potential anthropogenic climate impact of BC via the glaciation effect in MPCs is therefore likely to be negligible at this site and in environments with similar meteorological conditions and a similar aerosol population. The IAF of the BC‐containing particles also increased with total particle size, in a similar manner as for the BC‐free particles, but on a level 1 order of magnitude lower. Furthermore, BC‐containing IR were found to have a thicker coating than the BC‐containing total aerosol, suggesting the importance of atmospheric aging for ice nucleation.
Schlagwörter
Fachgebiet (DDC)
Veranstaltung
Startdatum der Ausstellung
Enddatum der Ausstellung
Startdatum der Konferenz
Enddatum der Konferenz
Datum der letzten Prüfung
ISBN
ISSN
2169-897X
2169-8996
2169-8996
Sprache
Englisch
Während FHNW Zugehörigkeit erstellt
Ja
Zukunftsfelder FHNW
Publikationsstatus
Veröffentlicht
Begutachtung
Peer-Review der ganzen Publikation
Open Access-Status
Hybrid
Lizenz
Zitation
KUPISZEWSKI, Piotr, Marco ZANATTA, Stephan MERTES, Paul VOCHEZER, Gary LLOYD, Johannes SCHNEIDER, Ludwig SCHENK, Martin SCHNAITER, Urs BALTENSPERGER, Ernest WEINGARTNER und Martin GYSEL, 2016. Ice residual properties in mixed‐phase clouds at the high‐alpine Jungfraujoch site. Journal of Geophysical Research: Atmospheres. 2016. Bd. 121, Nr. 20, S. 12343–12362. DOI 10.1002/2016jd024894. Verfügbar unter: https://doi.org/10.26041/fhnw-7802