Equal abundance of summertime natural and wintertime anthropogenic Arctic organic aerosols
Aerosols play an important yet uncertain role in modulating the radiation balance of the sensitive Arctic atmosphere. Organic aerosol is one of the most abundant, yet least understood, fractions of the Arctic aerosol mass. Here we use data from eight observatories that represent the entire Arctic to...
Published in: | Nature Geoscience |
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Online Access: | https://doi.org/10.1038/s41561-021-00891-1 https://infoscience.epfl.ch/record/292890/files/s41561-021-00891-1%20%281%29.pdf http://infoscience.epfl.ch/record/292890 |
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ftinfoscience:oai:infoscience.epfl.ch:292890 2023-05-15T14:33:26+02:00 Equal abundance of summertime natural and wintertime anthropogenic Arctic organic aerosols 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 El Haddad, Imad 2022-03-23T09:40:22Z https://doi.org/10.1038/s41561-021-00891-1 https://infoscience.epfl.ch/record/292890/files/s41561-021-00891-1%20%281%29.pdf http://infoscience.epfl.ch/record/292890 unknown doi:10.1038/s41561-021-00891-1 https://infoscience.epfl.ch/record/292890/files/s41561-021-00891-1%20%281%29.pdf http://infoscience.epfl.ch/record/292890 http://infoscience.epfl.ch/record/292890 Text 2022 ftinfoscience https://doi.org/10.1038/s41561-021-00891-1 2023-02-13T23:09:23Z Aerosols play an important yet uncertain role in modulating the radiation balance of the sensitive Arctic atmosphere. Organic aerosol is one of the most abundant, yet least understood, fractions of the Arctic aerosol mass. Here we use data from eight observatories that represent the entire Arctic to reveal the annual cycles in anthropogenic and biogenic sources of organic aerosol. We show that during winter, the organic aerosol in the Arctic is dominated by anthropogenic emissions, mainly from Eurasia, 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 condensation nuclei properties and acting as ice-nucleating particles. Their source strength or atmospheric processing is sensitive to nutrient availability, solar radiation, temperature and snow cover. Our results provide a comprehensive understanding of the current pan-Arctic organic aerosol, which can be used to support modelling efforts that aim to quantify the climate impacts of emissions in this sensitive region. Text Arctic EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) Arctic Nature Geoscience 15 3 196 202 |
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Open Polar |
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EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) |
op_collection_id |
ftinfoscience |
language |
unknown |
description |
Aerosols play an important yet uncertain role in modulating the radiation balance of the sensitive Arctic atmosphere. Organic aerosol is one of the most abundant, yet least understood, fractions of the Arctic aerosol mass. Here we use data from eight observatories that represent the entire Arctic to reveal the annual cycles in anthropogenic and biogenic sources of organic aerosol. We show that during winter, the organic aerosol in the Arctic is dominated by anthropogenic emissions, mainly from Eurasia, 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 condensation nuclei properties and acting as ice-nucleating particles. Their source strength or atmospheric processing is sensitive to nutrient availability, solar radiation, temperature and snow cover. Our results provide a comprehensive understanding of the current pan-Arctic organic aerosol, which can be used to support modelling efforts that aim to quantify the climate impacts of emissions in this sensitive region. |
format |
Text |
author |
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 El Haddad, Imad |
spellingShingle |
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 El Haddad, Imad Equal abundance of summertime natural and wintertime anthropogenic Arctic organic aerosols |
author_facet |
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 El Haddad, Imad |
author_sort |
Moschos, Vaios |
title |
Equal abundance of summertime natural and wintertime anthropogenic Arctic organic aerosols |
title_short |
Equal abundance of summertime natural and wintertime anthropogenic Arctic organic aerosols |
title_full |
Equal abundance of summertime natural and wintertime anthropogenic Arctic organic aerosols |
title_fullStr |
Equal abundance of summertime natural and wintertime anthropogenic Arctic organic aerosols |
title_full_unstemmed |
Equal abundance of summertime natural and wintertime anthropogenic Arctic organic aerosols |
title_sort |
equal abundance of summertime natural and wintertime anthropogenic arctic organic aerosols |
publishDate |
2022 |
url |
https://doi.org/10.1038/s41561-021-00891-1 https://infoscience.epfl.ch/record/292890/files/s41561-021-00891-1%20%281%29.pdf http://infoscience.epfl.ch/record/292890 |
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Arctic |
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Arctic |
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Arctic |
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Arctic |
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http://infoscience.epfl.ch/record/292890 |
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doi:10.1038/s41561-021-00891-1 https://infoscience.epfl.ch/record/292890/files/s41561-021-00891-1%20%281%29.pdf http://infoscience.epfl.ch/record/292890 |
op_doi |
https://doi.org/10.1038/s41561-021-00891-1 |
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Nature Geoscience |
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15 |
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3 |
container_start_page |
196 |
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202 |
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