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Collective geograph...
Collective geographical ecoregions and precursor sources driving Arctic new particle formation
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Brean, James (author)
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Beddows, David C. S. (author)
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Harrison, Roy M. (author)
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Song, Congbo (author)
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- Tunved, Peter (author)
- Stockholms universitet,Institutionen för miljövetenskap,Bolincentret för klimatforskning (tills m KTH & SMHI)
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- Ström, Johan (author)
- Stockholms universitet,Institutionen för miljövetenskap,Bolincentret för klimatforskning (tills m KTH & SMHI)
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- Krejci, Radovan (author)
- Stockholms universitet,Institutionen för miljövetenskap,Bolincentret för klimatforskning (tills m KTH & SMHI)
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- Freud, Eyal (author)
- Stockholms universitet,Institutionen för miljövetenskap,Bolincentret för klimatforskning (tills m KTH & SMHI)
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Massling, Andreas (author)
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Skov, Henrik (author)
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Asmi, Eija (author)
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Lupi, Angelo (author)
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Dall'Osto, Manuel (author)
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(creator_code:org_t)
- 2023-02-14
- 2023
- English.
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In: Atmospheric Chemistry And Physics. - : Copernicus GmbH. - 1680-7316 .- 1680-7324. ; 23:3, s. 2183-2198
- Related links:
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https://doi.org/10.5...
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https://urn.kb.se/re...
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https://doi.org/10.5...
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Abstract
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- The Arctic is a rapidly changing ecosystem, with complex ice–ocean–atmosphere feedbacks. An important process is new particle formation (NPF), from gas-phase precursors, which provides a climate forcing effect. NPF has been studied comprehensively at different sites in the Arctic, ranging from those in the High Arctic and those at Svalbard to those in the continental Arctic, but no harmonised analysis has been performed on all sites simultaneously, with no calculations of key NPF parameters available for some sites. Here, we analyse the formation and growth of new particles from six long-term ground-based stations in the Arctic (Alert, Villum, Tiksi, Zeppelin Mountain, Gruvebadet, and Utqiaġvik). Our analysis of particle formation and growth rates in addition to back-trajectory analysis shows a summertime maxima in the frequency of NPF and particle formation rate at all sites, although the mean frequency and particle formation rates themselves vary greatly between sites, with the highest at Svalbard and lowest in the High Arctic. The summertime growth rate, condensational sinks, and vapour source rates show a slight bias towards the southernmost sites, with vapour source rates varying by around an order of magnitude between the northernmost and southernmost sites. Air masses back-trajectories during NPF at these northernmost sites are associated with large areas of sea ice and snow, whereas events at Svalbard are associated with more sea ice and ocean regions. Events at the southernmost sites are associated with large areas of land and sea ice. These results emphasise how understanding the geographical variation in surface type across the Arctic is key to understanding secondary aerosol sources and providing a harmonised analysis of NPF across the Arctic.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Brean, James
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Beddows, David C ...
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Harrison, Roy M.
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Song, Congbo
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Tunved, Peter
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Ström, Johan
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show more...
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Krejci, Radovan
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Freud, Eyal
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Massling, Andrea ...
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Skov, Henrik
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Asmi, Eija
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Lupi, Angelo
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Dall'Osto, Manue ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
- Articles in the publication
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Atmospheric Chem ...
- By the university
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Stockholm University