Primary sources control the variability of aerosol optical properties in the Antarctic Peninsula

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http://hdl.handle.net/10138/232185

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Asmi , E , Neitola , K , Teinila , K , Rodriguez , E , Virkkula , A , Backman , J , Bloss , M , Jokela , J , Lihavainen , H , De Leeuw , G , Paatero , J , Aaltonen , V , Mei , M , Gambarte , G , Copes , G , Albertini , M , Perez Fogwill , G , Ferrara , J , Elena Barlasina , M & Sanchez , R 2018 , ' Primary sources control the variability of aerosol optical properties in the Antarctic Peninsula ' , Tellus. Series B: Chemical and Physical Meteorology , vol. 70 , 1414571 . https://doi.org/10.1080/16000889.2017.1414571

Title: Primary sources control the variability of aerosol optical properties in the Antarctic Peninsula
Author: Asmi, Eija; Neitola, Kimmo; Teinila, Kimmo; Rodriguez, Edith; Virkkula, Aki; Backman, John; Bloss, Matthew; Jokela, Jesse; Lihavainen, Heikki; De Leeuw, Gerrit; Paatero, Jussi; Aaltonen, Veijo; Mei, Miguel; Gambarte, Gonzalo; Copes, Gustavo; Albertini, Marco; Perez Fogwill, German; Ferrara, Jonathan; Elena Barlasina, Maria; Sanchez, Ricardo
Contributor: University of Helsinki, Finnish Meteorological Institute
University of Helsinki, Department of Physics
Date: 2018-01-02
Language: eng
Number of pages: 16
Belongs to series: Tellus. Series B: Chemical and Physical Meteorology
ISSN: 1600-0889
URI: http://hdl.handle.net/10138/232185
Abstract: Aerosol particle optical properties were measured continuously between years 2013-2015 at the Marambio station in the Antarctic Peninsula. Annual cycles of particle scattering and absorption were studied and explained using measured particle chemical composition and the analysis of air mass transport patterns. The particle scattering was found elevated during the winter but the absorption did not show any clear annual cycle. The aerosol single scattering albedo at lambda = 637 nm was on average 0.96 +/- 0.10, with a median of 0.99. Aerosol scattering Angstrom exponent increased during summer, indicating an increasing fraction of fine mode particles. The aerosol was mainly composed of sea salt, sulphate and crustal soil minerals, and most of the particle mass were in the coarse mode. Both the particle absorption and scattering were increased during high wind speeds. This was explained by the dominance of the primary marine sea-spray and wind-blown soil dust sources. In contrast, the back-trajectory analysis suggested that long-range transport has only a minor role as a source of absorbing aerosol at the peninsula.
Subject: optical properties
chemistry
antarctic aerosols
BLACK CARBON
SEA-SALT
PARTICLE FORMATION
ATMOSPHERIC AEROSOLS
CHEMICAL-COMPOSITION
LIGHT-SCATTERING
TRACE-ELEMENTS
BOUNDARY-LAYER
ICE
ABSORPTION
114 Physical sciences
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