Preprints
https://doi.org/10.5194/acp-2021-94
https://doi.org/10.5194/acp-2021-94

  15 Feb 2021

15 Feb 2021

Review status: this preprint is currently under review for the journal ACP.

Differentiation of coarse-mode anthropogenic, marine and dust particles in the high Arctic Islands of Svalbard

Congbo Song1, Manuel Dall’Osto2, Angelo Lupi3, Mauro Mazzola3, Rita Traversi4,5, Silvia Becagli4,5, Stefania Gilardoni3, Stergios Vratolis6, Karl Espen Yttri7, David C. S. Beddows1, Julia Schmale8, James Brean1, Agung Ghani Kramawijaya1, Roy M. Harrison1,a, and Zongbo Shi1 Congbo Song et al.
  • 1School of Geography Earth and Environment Sciences, University of Birmingham, Birmingham B15 2TT, UK
  • 2Institute of Marine Science, Consejo Superior de Investigaciones Científicas (CSIC), Barcelona, Spain
  • 3Institute of Polar Sciences, National Research Council (CNR-ISP), 40129 Bologna, Italy
  • 4Department of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
  • 5Institute of Polar Sciences, ISP-CNR, Via Torino 155, 30172 Venice-Mestre, Italy
  • 6ERL, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Centre of Scientific Research Demokritos, 15310 Ag. Paraskevi, Attiki, Greece
  • 7NILU -Norwegian Institute for Air Research, P.O. Box 100, N-2027 Kjeller, Norway Kjeller, Norway
  • 8School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédéderale de Lausanne, Lausanne, Switzerland
  • aalso at: Department of Environmental Sciences/Center of Excellence in Environmental Studies, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia

Abstract. Understanding aerosol-cloud-climate interactions in the Arctic is key to predict the climate in this rapidly changing region. Whilst many studies have focused on submicron aerosol (diameter less than 1 μm), relatively little is known about the climate relevance of supermicron aerosol (diameter above 1 μm). Here, we present a cluster analysis of multiyear (2015–2019) aerodynamic volume size distributions with diameter ranging from 0.5 to 20 μm measured continuously at the Gruvebadet Observatory in the Svalbard archipelago. Together with aerosol chemical composition data from several online and offline measurements, we apportioned the occurrence of the coarse-mode aerosols to anthropogenic (two sources, 27 %) and natural (three sources, 73 %) origins. Specifically, two clusters are related to Arctic haze with high levels of black carbon, sulfate and accumulation mode (0.1–1 μm) aerosol. The first cluster (9 %) is attributed to ammonium sulfate-rich Arctic haze particles, whereas the second one (18 %) to larger-mode aerosol mixed with sea salt. The three natural aerosol clusters were: open ocean sea spray aerosol (34 %), mineral dust (7 %), and an unidentified source of sea spray-related aerosol (32 %). The results suggest that sea spray-related aerosol in polar regions may be more complex than previously thought due to short/long-distance origins and mixtures with Arctic haze, biogenic and likely snow-blowing aerosols. Studying supermicron natural aerosol in the Arctic is imperative for understanding the impacts of changing natural processes on Arctic aerosol.

Congbo Song et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on acp-2021-94', Anonymous Referee #1, 19 Mar 2021
  • RC2: 'Comment on acp-2021-94', Anonymous Referee #2, 29 Mar 2021

Congbo Song et al.

Data sets

aerosol large particles size distribution collected at Gruvebadet, NY ALESUND, SVALBARD Rita Traversi, Silvia Becagli, Mauro Mazzola, Angelo Lupi, and Vito Vitale https://doi.org/10.5281/zenodo.3961473

Congbo Song et al.

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Short summary
We present a cluster analysis of relatively long-term (2015–2019) aerosol aerodynamic volume size distributions up to 20 μm in the high Arctic for the first time. The study found that anthropogenic and natural aerosols comprised 27 % and 73 % of the occurrence of the coarse-mode aerosols, respectively. Our study shows that about two third of the coarse-mode aerosols are related to two sea spray-related aerosol clusters, indicating that sea spray aerosol may more complex in the Arctic environment.
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