The influence of residential wood combustion on the concentrations of PM2.5 in four Nordic cities

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DOI

  • Jaakko Kukkonen, Finnish Meteorological Institute
  • ,
  • Susana López-Aparicio, Norwegian Institute for Air Research
  • ,
  • David Segersson, Swedish Meteorological and Hydrological Institute
  • ,
  • Camilla Geels
  • Leena Kangas, Finnish Meteorological Institute
  • ,
  • Mari Kauhaniemi, Finnish Meteorological Institute
  • ,
  • Androniki Maragkidou, Finnish Meteorological Institute
  • ,
  • Anne Jensen
  • Timo Assmuth, Finnish Environment Institute
  • ,
  • Ari Karppinen, Finnish Meteorological Institute
  • ,
  • Mikhail Sofiev, Finnish Meteorological Institute
  • ,
  • Heidi Hellén, Finnish Meteorological Institute
  • ,
  • Kari Riikonen, Finnish Meteorological Institute
  • ,
  • Juha Nikmo, Finnish Meteorological Institute
  • ,
  • Anu Kousa, Helsinki Region Environmental Services Authority (HSY)
  • ,
  • Jarkko V. Niemi, Helsinki Region Environmental Services Authority (HSY)
  • ,
  • Niko Karvosenoja, Finnish Environment Institute
  • ,
  • Gabriela Sousa Santos, Norwegian Institute for Air Research
  • ,
  • Ingrid Sundvor, Transportokonomisk institutt
  • ,
  • Ulas Im
  • Jesper H. Christensen
  • Ole Kenneth Nielsen
  • Marlene S. Plejdrup
  • Jacob Klenø Nøjgaard
  • ,
  • Gunnar Omstedt, Swedish Meteorological and Hydrological Institute
  • ,
  • Camilla Andersson, Swedish Meteorological and Hydrological Institute
  • ,
  • Bertil Forsberg, Clinical Sciences, Umea universitet, Klinisk vetenskap.
  • ,
  • Jørgen Brandt

Residential wood combustion (RWC) is an important contributor to air quality in numerous regions worldwide. This study is the first extensive evaluation of the influence of RWC on ambient air quality in several Nordic cities. We have analysed the emissions and concentrations of PM classCombining double low line"inline-formula" 2.5 in cities within four Nordic countries: in the metropolitan areas of Copenhagen, Oslo, and Helsinki and in the city of Umeä. We have evaluated the emissions for the relevant urban source categories and modelled atmospheric dispersion on regional and urban scales. The emission inventories for RWC were based on local surveys, the amount of wood combusted, combustion technologies and other relevant factors. The accuracy of the predicted concentrations was evaluated based on urban concentration measurements. The predicted annual average concentrations ranged spatially from 4 to 7  classCombining double low line"inline-formula" μg m-3 (2011), from 6 to 10  classCombining double low line"inline-formula" μg m-3 (2013), from 4 to more than 13  classCombining double low line"inline-formula" μg m-3 (2013) and from 9 to more than 13  classCombining double low line"inline-formula" μg m-3 (2014), in Umeä, Helsinki, Oslo and Copenhagen, respectively. The higher concentrations in Copenhagen were mainly caused by the relatively high regionally and continentally transported background contributions. The annual average fractions of PM classCombining double low line"inline-formula" 2.5 concentrations attributed to RWC within the considered urban regions ranged spatially from 0 % to 15 %, from 0 % to 20 %, from 8 % to 22 % and from 0 % to 60 % in Helsinki, Copenhagen, Umeä and Oslo, respectively. In particular, the contributions of RWC in central Oslo were larger than 40 % as annual averages. In Oslo, wood combustion was used mainly for the heating of larger blocks of flats. In contrast, in Helsinki, RWC was solely used in smaller detached houses. In Copenhagen and Helsinki, the highest fractions occurred outside the city centre in the suburban areas. In Umeä, the highest fractions occurred both in the city centre and its surroundings.

OriginalsprogEngelsk
TidsskriftAtmospheric Chemistry and Physics
Vol/bind20
Nummer7
Sider (fra-til)4333-4365
Antal sider33
ISSN1680-7316
DOI
StatusUdgivet - 2020

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