Variation of Absorption Ångström Exponent in Aerosols From Different Emission Sources

Helin, Aku; Virkkula, Aki; Backman, John; Pirjola, Liisa; Sippula, Olli; Aakko-Saksa, Päivi; Väätäinen, Sampsa; Mylläri, Fanni; Järvinen, Anssi; Bloss, Matthew; Aurela, Minna; Jakobi, Gert; Karjalainen, Panu; Zimmermann, Ralf; Jokiniemi, Jorma; Saarikoski, Sanna; Tissari, Jarkko; Rönkkö, Topi; V. Niemi, Jarkko; Timonen, Hilkka

doi:10.1029/2020jd034094

Public

Variation of Absorption Ångström Exponent in Aerosols From Different Emission Sources

Published in Journal of Geophysical Research Atmospheres • May 4, 2021

Authors:

Aku Helin

Aki Virkkula

John Backman

Abstract

Abstract The absorption Ångström exponent (AAE) describes the spectral dependence of light absorption by aerosols. AAE is typically used to differentiate between different aerosol types for example., black carbon, brown carbon, and dust particles. In this study, the variation of AAE was investigated...

Subject

Aethalometer

Aerosol

Environmental science

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