Primary sources control the variability of aerosol optical properties in the Antarctic Peninsula
| Autor: | Jussi Paatero, Kimmo Neitola, V. Aaltonen, Marco Albertini, Aki Virkkula, John Backman, Gonzalo Gambarte, Edith Rodriguez, María Elena Barlasina, Gerrit de Leeuw, Kimmo Teinilä, Germán Andrés Pérez Fogwill, Heikki Lihavainen, Jonathan Ferrara, Ricardo Sanchez, Eija Asmi, Matthew Bloss, Jesse Jokela, Miguel Mei, Gustavo Emmanuel Copes |
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| Přispěvatelé: | Department of Physics |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
optical properties
Atmospheric Science food.ingredient 010504 meteorology & atmospheric sciences antarctic aerosols lcsh:QC851-999 010501 environmental sciences Atmospheric sciences chemistry CHEMICAL-COMPOSITION 01 natural sciences complex mixtures 114 Physical sciences food Peninsula PARTICLE FORMATION TRACE-ELEMENTS ABSORPTION Absorption (electromagnetic radiation) 0105 earth and related environmental sciences geography geography.geographical_feature_category Sea salt ICE BOUNDARY-LAYER LIGHT-SCATTERING Aerosol Particle scattering SEA-SALT ATMOSPHERIC AEROSOLS 13. Climate action BLACK CARBON Particle lcsh:Meteorology. Climatology |
| Zdroj: | Tellus: Series B, Chemical and Physical Meteorology, Vol 70, Iss 1, Pp 1-16 (2018) Tellus B: Chemical and Physical Meteorology |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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