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Equal abundance of summertime natural and wintertime anthropogenic Arctic organic aerosolsстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Moschos Vaios, Dzepina Katja, Bhattu Deepika, Lamkaddam Houssni, Casotto Roberto, Daellenbach Kaspar R., Canonaco Francesco, Rai Pragati, Aas Wenche, Becagli Silvia, Calzolai Giulia, Eleftheriadis Konstantinos, Moffett Claire E., Schnelle-Kreis Jürgen, Severi Mirko, Sharma Sangeeta, Skov Henrik, Vestenius Mika, Zhang Wendy, Hakola Hannele, Hellén Heidi, Huang Lin, Jaffrezo Jean-Luc, Massling Andreas, Nøjgaard Jakob K., Petäjä Tuukka, Popovicheva Olga, Sheesley Rebecca J., Traversi Rita, Yttri Karl Espen, Schmale Julia, Prévôt André S.H., Baltensperger Urs, Haddad Imad El
- Журнал: Nature Geoscience
- Год издания: 2022
- Издательство: Nature Publishing Group
- Местоположение издательства: United Kingdom
- DOI: 10.1038/s41561-021-00891-1
- Аннотация: Aerosols play an important yet uncertain role in modulating the radiation balance of the sensitive Arctic atmosphere. Organicaerosol is one of the most abundant, yet least understood, fractions of the Arctic aerosol mass. Here we use data from eightobservatories that represent the entire Arctic to reveal the annual cycles in anthropogenic and biogenic sources of organicaerosol. We show that during winter, the organic aerosol in the Arctic is dominated by anthropogenic emissions, mainly fromEurasia, which consist of both direct combustion emissions and long-range transported, aged pollution. In summer, the decreasing anthropogenic pollution is replaced by natural emissions. These include marine secondary, biogenic secondary and primary biological emissions, which have the potential to be important to Arctic climate by modifying the cloud condensationnuclei properties and acting as ice-nucleating particles. Their source strength or atmospheric processing is sensitive to nutrientavailability, solar radiation, temperature and snow cover. Our results provide a comprehensive understanding of the currentpan-Arctic organic aerosol, which can be used to support modelling efforts that aim to quantify the climate impacts of emissions in this sensitive region.
- Добавил в систему: Поповичева Ольга Борисовна