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
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
Received: 31 Jan 2021 – Accepted for review: 13 Feb 2021 – Discussion started: 15 Feb 2021
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.
aerosol large particles size distribution collected at Gruvebadet, NY ALESUND, SVALBARDRita Traversi, Silvia Becagli, Mauro Mazzola, Angelo Lupi, and Vito Vitale https://doi.org/10.5281/zenodo.3961473
Congbo Song et al.
Viewed
Total article views: 273 (including HTML, PDF, and XML)
HTML
PDF
XML
Total
BibTeX
EndNote
173
95
5
273
1
1
HTML: 173
PDF: 95
XML: 5
Total: 273
BibTeX: 1
EndNote: 1
Views and downloads (calculated since 15 Feb 2021)
Cumulative views and downloads
(calculated since 15 Feb 2021)
Viewed (geographical distribution)
Total article views: 252 (including HTML, PDF, and XML)
Thereof 252 with geography defined
and 0 with unknown origin.
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.
We present a cluster analysis of relatively long-term (2015–2019) aerosol aerodynamic volume...