%0 Article
%T Air pollution in eastern Lapland : challenge for an environmental measurement station.
%A Hari, Pertti.
%A Aalto, Pasi
%A Hämeri, Kaarle
%A Kulmala, Markku.
%A Lahti, Tapani.
%A Luoma, Sari.
%A Palva, Lauri
%A Pohja, Toivo
%A Pulliainen, Erkki.
%A Siivola, Erkki.
%A Vesala, Timo
%D 1994
%J Silva Fennica
%V 28
%N 1
%R doi:10.14214/sf.a9160
%U https://silvafennica.fi/article/5526
%X <p>The Värriö environmental measurement station has been designed and constructed during 1991 and 1992. The measurement system consists of measurement units for gases (sulphur dioxide, ozone, carbon dioxide), particles, photosynthesis and irradiation. A meteorological station is also included. The preliminary measurement period was started on August, 1991. During the first year (1991–1992) some parts of the system were redeveloped and rebuilt. Full, continuous measurement started in August 1992. The system has been working quite reliably, with good accuracy. The preliminary results show that pollution episodes are observed when the wind direction is from Monchegorsk or Nikel, the main emission sources in Kola Peninsula.</p>