Articles | Volume 21, issue 2
https://doi.org/10.5194/acp-21-1173-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-21-1173-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Spatiotemporal variation and trends in equivalent black carbon in the Helsinki metropolitan area in Finland
Institute for Atmospheric and Earth System Research/Physics, Faculty
of Science, University of Helsinki, P.O. Box 68, 00014 Helsinki, Finland
Jarkko V. Niemi
Helsinki Region Environmental Services Authority, P.O. Box 100, 00066
Helsinki, Finland
Minna Aurela
Atmospheric Composition Research, Finnish Meteorological Institute,
P.O. Box 503, 00101 Helsinki, Finland
Pak Lun Fung
Institute for Atmospheric and Earth System Research/Physics, Faculty
of Science, University of Helsinki, P.O. Box 68, 00014 Helsinki, Finland
Aku Helin
Atmospheric Composition Research, Finnish Meteorological Institute,
P.O. Box 503, 00101 Helsinki, Finland
Tareq Hussein
Institute for Atmospheric and Earth System Research/Physics, Faculty
of Science, University of Helsinki, P.O. Box 68, 00014 Helsinki, Finland
Department of Physics, The University of Jordan, 11942 Amman, Jordan
Leena Kangas
Helsinki Region Environmental Services Authority, P.O. Box 100, 00066
Helsinki, Finland
Anu Kousa
Helsinki Region Environmental Services Authority, P.O. Box 100, 00066
Helsinki, Finland
Topi Rönkkö
Aerosol Physics Laboratory, Faculty of Engineering and Natural
Sciences, Tampere University, P.O. Box 692, 33014 Tampere, Finland
Hilkka Timonen
Atmospheric Composition Research, Finnish Meteorological Institute,
P.O. Box 503, 00101 Helsinki, Finland
Aki Virkkula
Atmospheric Composition Research, Finnish Meteorological Institute,
P.O. Box 503, 00101 Helsinki, Finland
Tuukka Petäjä
Institute for Atmospheric and Earth System Research/Physics, Faculty
of Science, University of Helsinki, P.O. Box 68, 00014 Helsinki, Finland
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Latest update: 13 Dec 2024
Short summary
This study combined black carbon measurements from 15 Finnish sites that represented different environments (traffic, detached housing area, urban background, and regional background). The seasonal and diurnal variations in the black carbon concentration were associated with local emissions from traffic and residential wood burning. The study observed decreasing trends in the black carbon concentration and associated them with decreases in traffic emissions.
This study combined black carbon measurements from 15 Finnish sites that represented different...
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