Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 5.668 IF 5.668
  • IF 5-year value: 6.201 IF 5-year
    6.201
  • CiteScore value: 6.13 CiteScore
    6.13
  • SNIP value: 1.633 SNIP 1.633
  • IPP value: 5.91 IPP 5.91
  • SJR value: 2.938 SJR 2.938
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 174 Scimago H
    index 174
  • h5-index value: 87 h5-index 87
Volume 14, issue 16
Atmos. Chem. Phys., 14, 8255-8267, 2014
https://doi.org/10.5194/acp-14-8255-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Interactions between climate change and the Cryosphere: SVALI,...

Atmos. Chem. Phys., 14, 8255-8267, 2014
https://doi.org/10.5194/acp-14-8255-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 19 Aug 2014

Research article | 19 Aug 2014

Contribution of ship traffic to aerosol particle concentrations downwind of a major shipping lane

N. Kivekäs1,2, A. Massling3, H. Grythe2,4,5, R. Lange6, V. Rusnak1, S. Carreno1, H. Skov3,7,8, E. Swietlicki1, Q. T. Nguyen6, M. Glasius6, and A. Kristensson1 N. Kivekäs et al.
  • 1Department of Physics, Lund University, Lund, Sweden
  • 2Atmospheric Composition, Finnish Meteorological Institute, Helsinki, Finland
  • 3Department of Environmental Science, Aarhus University, Roskilde, Denmark
  • 4Department of Applied Environmental Science, Stockholm University, Stockholm, Sweden
  • 5Norwegian Institute for Air Research, Oslo, Norway
  • 6Department of Chemistry and iNANO, Aarhus University, Aarhus, Denmark
  • 7Arctic Research Centre, Aarhus University, Aarhus, Denmark
  • 8University of Southern Denmark, Institute of Chemical Engineering and Biotechnology and Environmental Technology, Odense, Denmark

Abstract. Particles in the atmosphere are of concern due to their toxic properties and effects on climate. In coastal areas, ship emissions can be a significant anthropogenic source. In this study we investigated the contribution from ship emissions to the total particle number and mass concentrations at a remote location. We studied the particle number concentration (12 to 490 nm in diameter), the mass concentration (12 to 150 nm in diameter) and number and volume size distribution of aerosol particles in ship plumes for a period of 4.5 months at Høvsøre, a coastal site on the western coast of Jutland in Denmark. During episodes of western winds, the site is about 50 km downwind of a major shipping lane and the plumes are approximately 1 hour old when they arrive at the site. We have used a sliding percentile-based method for separating the plumes from the measured background values and to calculate the ship plume contribution to the total particle number and PM0.15 mass concentration (mass of particles below 150 nm in diameter, converted from volume assuming sphericity) at the site. The method is not limited to particle number or volume concentration, but can also be used for different chemical species in both particle and gas phase. The total number of analyzed ship plumes was 726, covering on average 19% of the time when air masses were arriving at the site over the shipping lane. During the periods when plumes were present, the particle concentration exceeded the background values on average by 790 cm−3 by number and 0.10 μg m−3 by mass. The corresponding daily average values were 170 cm−3 and 0.023 μg m−3, respectively. This means that the ship plumes contributed between 11 and 19% to the particle number concentration and between 9 and 18% to PM0.15 during days when air was arriving over the shipping lane. The estimated annual contribution from ship plumes, where all wind directions were included, was in the range of 5–8% in particle number concentration and 4–8% in PM0.15.

Publications Copernicus
Special issue
Download
Citation
Share