Atmospheric particle abundance and sea salt aerosol observations in the springtime Arctic: a focus on blowing snow and leads
Abstract µ m particles (factor of 6, on average) and 0.06–0.3 µ m particles (67 %, on average) and a significant decrease (82 %, on average) in 1–4 µ m particles were observed compared to low wind speed periods. These size distribution changes were likely caused by the generation of ultrafine particles from leads and/or blowing snow, with scavenging of supermicron particles by blowing snow. At elevated wind speeds, both submicron and supermicron sodium and chloride mass concentrations were enhanced, consistent with wind-dependent local sea salt aerosol production. At moderate wind speeds below the threshold for blowing snow as well as during observed blowing snow, individual sea spray aerosol particles were measured. These individual salt particles were enriched in calcium relative to sodium in seawater due to the binding of this divalent cation with organic matter in the sea surface microlayer and subsequent enrichment during seawater bubble bursting. The chemical composition of the surface snowpack also showed contributions from sea spray aerosol deposition. Overall, these results show the contribution of sea spray aerosol production from leads on both aerosols and the surface snowpack. Therefore, if blowing snow sublimation contributed to the observed sea salt aerosol, the snow being sublimated would have been impacted by sea spray aerosol deposition rather than upward brine migration through the snowpack. Sea spray aerosol production from leads is expected to increase, with thinning and fracturing of sea ice in the rapidly warming Arctic.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Atmospheric particle abundance and sea salt aerosol observations in the springtime Arctic: a focus on blowing snow and leads ; volume:22 ; number:23 ; year:2022 ; pages:15263-15285 ; extent:23
Atmospheric chemistry and physics ; 22, Heft 23 (2022), 15263-15285 (gesamt 23)
- Urheber
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Chen, Qianjie
Mirrielees, Jessica A.
Thanekar, Sham
Loeb, Nicole A.
Kirpes, Rachel M.
Upchurch, Lucia M.
Barget, Anna J.
Lata, Nurun Nahar
Raso, Angela R. W.
McNamara, Stephen M.
China, Swarup
Quinn, Patricia K.
Ault, Andrew P.
Kennedy, Aaron
Shepson, Paul B.
Fuentes, Jose D.
Pratt, Kerri A.
- DOI
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10.5194/acp-22-15263-2022
- URN
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urn:nbn:de:101:1-2022120804394755778398
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:25 MESZ
Datenpartner
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Beteiligte
- Chen, Qianjie
- Mirrielees, Jessica A.
- Thanekar, Sham
- Loeb, Nicole A.
- Kirpes, Rachel M.
- Upchurch, Lucia M.
- Barget, Anna J.
- Lata, Nurun Nahar
- Raso, Angela R. W.
- McNamara, Stephen M.
- China, Swarup
- Quinn, Patricia K.
- Ault, Andrew P.
- Kennedy, Aaron
- Shepson, Paul B.
- Fuentes, Jose D.
- Pratt, Kerri A.
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