Regions of Open Water and Melting Sea Ice Drive New Particle Formation in North East Greenland

Research output: Contribution to journalArticle

Authors

  • Manuel Dall'Osto
  • C. Geels
  • D Boertmann
  • R. Lange
  • J.K. Nojgaard
  • R. Simo
  • H. Skov
  • A. Massling

Colleges, School and Institutes

External organisations

  • Department of Environmental Sciences / Center of Excellence in Environmental Studies, King Abdulaziz University, PO Box 80203, Jeddah, 21589, Saudi Arabia
  • Arctic Research Centre, Department of Environmental Science, Aarhus University, Roskilde, Denmark
  • Department of Biosciences, Aarhus University, Roskilde, Denmark
  • CSIC - Instituto de Ciencias del Mar (ICM)
  • 1Department of Environmental Science, Aarhus University, Frederiksborgvej 399, 4000, Roskilde, Denmark
  • CSIC
  • Department of Environmental Science, Aarhus University, Frederiksborgvej 399, 4000, Roskilde, Denmark

Abstract

Atmospheric new particle formation (NPF) and growth significantly influences the indirect aerosolcloud effect within the polar climate system. In this work, the aerosol population is categorised via cluster analysis of aerosol number size distributions (9–915 nm, 65 bins) taken at Villum Research Station, Station Nord (VRS) in North Greenland during a 7 year record (2010–2016). Data are clustered at daily averaged resolution; in total, we classified six categories, five of which clearly describe the ultrafine aerosol population, one of which is linked to nucleation events (up to 39% during summer). Air mass trajectory analyses tie these frequent nucleation events to biogenic precursors released by open water and melting sea ice regions. NPF events in the studied regions seem not to be related to bird colonies from coastal zones. Our results show a negative correlation (r = −0.89) between NPF events and sea ice extent, suggesting the impact of ultrafine Arctic aerosols is likely to increase in the future, given the likely increased sea ice melting. Understanding the composition and the sources of Arctic aerosols requires further integrated studies with joint multi-component ocean-atmosphere observation and modelling.

Details

Original languageEnglish
Article number6109
JournalScientific Reports
Volume8
Publication statusPublished - 17 Apr 2018

Keywords

  • atmospheric science, Biogeochemistry, Element cycles