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In-situ airborne observations of the microphysical properties of the Arctic tropospheric aerosol during late spring and summer
Stockholm Univ, Dept Meteorol, S-10691 Stockholm, Sweden..
Stockholm Univ, Dept Meteorol, S-10691 Stockholm, Sweden..ORCID-id: 0000-0002-9384-9702
Univ Stockholm, Atmospher Sci Unit, Dept Appl Environm Sci, S-10691 Stockholm, Sweden..
Deutsches Zentrum Luft & Raumfahrt DLR, Inst Atmospher Phys, D-82234 Oberpfaffenhofen, Wessling, Germany..
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2008 (Engelska)Ingår i: Tellus. Series B, Chemical and physical meteorology, ISSN 0280-6509, E-ISSN 1600-0889, Vol. 60, nr 3, s. 392-404Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

In-situ aerosol data collected in the Arctic troposphere during a three-week period in 2004 were analysed. The measurements took place during late spring, i.e., at the time of the year when the characteristics of the aerosol distribution change from being accumulation-mode dominated to being primarily of the Aitken-mode type, a process that previously has been observed in the boundary layer. To address the question whether this transition is also detectable in the free troposphere of an aircraft-measured data from the ASTAR 2004 campaign were analysed. In this study, we present vertically as well as temporally results from both ground-based and airborne measurements of the total number concentrations of particles larger than 10 and 260 nm. Aircraft-measured size distributions of the aerosol ranging from 20 to 2200 nm have been evaluated with regard to conditions in the boundary layer as well as in the free troposphere. Furthermore an analysis of the volatile fraction of the aerosol population has been performed both for the integrated and size-distributed results. From these investigations we find that the transition takes place in the entire troposphere.

Ort, förlag, år, upplaga, sidor
2008. Vol. 60, nr 3, s. 392-404
Forskningsämne
SWEDARCTIC 2006, Zeppelin; SWEDARCTIC 2007, Zeppelin 2007
Identifikatorer
URN: urn:nbn:se:polar:diva-2315DOI: 10.1111/j.1600-0889.2008.00348.xISI: 000256845400010OAI: oai:DiVA.org:polar-2315DiVA, id: diva2:858284
Tillgänglig från: 2015-10-01 Skapad: 2015-10-01 Senast uppdaterad: 2017-12-01

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Krejci, RadovanStohl, Andreas
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Tellus. Series B, Chemical and physical meteorology

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