Black carbon, particle number concentration and nitrogen oxide emission factors of random in-use vehicles measured with the on-road chasing method

Ježek, I.; Katrašnik, T.; Westerdahl, D.; Močnik, G.

doi:https://doi.org/10.5194/acp-15-11011-2015

Articles | Volume 15, issue 19

https://doi.org/10.5194/acp-15-11011-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-15-11011-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 15, issue 19

Research article

|

05 Oct 2015

Research article |

| 05 Oct 2015

Black carbon, particle number concentration and nitrogen oxide emission factors of random in-use vehicles measured with the on-road chasing method

I. Ježek, T. Katrašnik, D. Westerdahl, and G. Močnik

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Final revised paper (published on 05 Oct 2015)
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Preprint (discussion started on 08 Jun 2015)
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Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC C5089: 'Referree Comments acp2015_352', Anonymous Referee #1, 20 Jul 2015
RC C5364: 'Referee comment', Anonymous Referee #2, 29 Jul 2015
AC C7068: 'Replies to referees', Griša Močnik, 21 Sep 2015

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AR: Author's response | RR: Referee report | ED: Editor decision

AR by Griša Močnik on behalf of the Authors (21 Sep 2015) Author's response Manuscript

ED: Publish as is (22 Sep 2015) by James Allan

AR by Griša Močnik on behalf of the Authors (22 Sep 2015) Author's response Manuscript

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Short summary

On-road measurement of black carbon (BC), NOx and particle number (PN) emission factors (EF) by chasing vehicles is the first such study where BC EFs of many individual diesel cars were determined in real-world conditions. Median BC EF of diesel and gasoline cars in use for <5 years, decreased by 60% and 47% from those in use for 5–10 years. Reductions for goods vehicles' NOx and PN EFs were 52% and 67%. We found an increase of BC EFs in newer goods vehicle fleet compared to 5 – 10 year old one.