The natural aerosol over Northern Europe and its relation to anthropogenic emissions - implications of important climate feedbacks

Research output: Contribution to journalArticle


We use a recently developed parametrization to estimate the regional particle field in the summer time troposphere over Scandinavia that would result if the forest were the only source of particles. The calculated field is compared with available observational data. It is concluded that the needle leaf forest above 58 degrees N alone is capable of producing aerosol mass concentrations corresponding to 12-50% of today's values in the boundary layer over Scandinavia. We also demonstrate that the forest itself could produce up to 200 CCN per cubic centimetre on average over Scandinavia and further show that an increase in temperature by 5.8 degrees C compared to today's average temperature could increase this CCN population by 40%. The study shows that we are able to approximate the natural aerosol field resulting from biogenic emissions over the boreal forest in the northern hemispheric region. This information provide an important contribution in the evaluation of the climate effect caused by anthropogenic emissions of particles over the forest and also opens the possibility to better address the climate feedbacks believed to be associated with the boreal region.


  • Peter Tunved
  • Ström Johan
  • Kulmala Markku
  • Kerminen Veli-Matti
  • Dal Maso Mikka
  • Birgitta Svenningsson
  • Lunder Chris
  • Hansson Hans Christen
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Physical Geography
  • Subatomic Physics
Original languageEnglish
Pages (from-to)473-484
JournalTellus. Series B: Chemical and Physical Meteorology
Volume60 B
Issue number4
Publication statusPublished - 2008
Publication categoryResearch

Bibliographic note

The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Nuclear Physics (Faculty of Technology) (011013007), Dept of Physical Geography and Ecosystem Science (011010000)