Articles | Volume 16, issue 21
https://doi.org/10.5194/amt-16-5075-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-16-5075-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
01 Nov 2023
Research article |
| 01 Nov 2023
| 01 Nov 2023
Challenges and solutions in determining dilution ratios and emission factors from chase measurements of passenger vehicles
Department of Technical Physics, University of Eastern Finland, Kuopio, Finland
Miska Olin
Aerosol Physics Laboratory, Tampere University, Tampere, Finland
now at: Department of Atmospheric Sciences, Texas A&M University, College Station, TX, USA
Sampsa Martikainen
Aerosol Physics Laboratory, Tampere University, Tampere, Finland
Panu Karjalainen
Aerosol Physics Laboratory, Tampere University, Tampere, Finland
Santtu Mikkonen
Department of Technical Physics, University of Eastern Finland, Kuopio, Finland
Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
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Short summary
Emission factor calculation was studied to provide models that do not use traditional CO2-based calculation in exhaust plume analysis. Two types of models, one based on the physical dependency of dilution of the exhaust flow rate and speed and two based on the statistical, measured dependency of dilution of the exhaust flow rate, acceleration, speed, altitude change, and/or wind, were developed. These methods could possibly be extended to also calculate non-exhaust emissions in the future.
Emission factor calculation was studied to provide models that do not use traditional CO2-based...
