New scientific article by Aerosol

Black carbon emissions of individual cars measured under real traffic conditions

The latest study of Aerosol scientists determined black carbon (BC), particle number concentration (PN) and nitrogen oxides (NOx) emission factors (EFs) of different vehicles in real driving conditions. It is the first study where EFs of individual passenger cars were determined with the on-road chasing method and the first on-road study to report BC EFs of diesel cars. EFs are usually measured in laboratories, where only a limited number of vehicles can be measured on a prescribed driving cycles, thus the diversity of real driving conditions is not reflected. The chasing method used in this study measures emissions of individual vehicles by following them on roads and thus including the variety of in-use vehicles and traffic situations. Results showed that new diesel and petrol-fueled cars produce less BC per unit of fuel than old cars; while new goods vehicles (diesel trucks and buses) produce more BC per unit of fuel than older goods vehicles. The contrary was true for NOx EFs, these decreased from older to newer vehicle age groups. NOx EFs of diesel cars showed similar values over all investigated age groups. The span of PN EFs petrol-fueled cars increased in the newest age group, reflecting the high PN emissions of the newly introduced direct injection engines.

Air intake tubes hanging from a window of the car funneled exhaust gases into separate instruments for measuring black carbon, nitrogen oxide and particulates.

Original article can be read in an open access journal Atmospheric Chemistry and Physics:

I. Ježek, T. Katrašnik, D. Westerdahl, G. Močnik, »Black carbon, particle number concentration and nitrogen oxide emission factors of random in-use vehicles measured with the on-road chasing method«, Atmos. Chem. Phys., 15, 11011-11026, (2015)

The article has already received attention in EOS Earth & Space Science News: https://eos.org/articles/tailpipe-study-newer-trucks-emit-more-black-carbon and in Science for Environment Policy (Issue 441, 7 January 2016) - Black carbon emissions of individual cars measured under real conditions: http://ec.europa.eu/environment/integration/research/newsalert/archive/air-pollution.htm

 

In the News

Prev Next

Discontinuation of the model AE31 Aethalometer®

Following the announcement made in January 2016,...

Read more

Aerosol at EAC 2016

Aerosol will be attending the European Aerosol Co...

Aerosol at EAC 2016

Read more

Critical SW update - 1.1.8.0.

We are pleased to announce our latest improvement...

Critical SW update - 1.1.8.0.

Read more

A story of success

Slovenian company at the forefront of black carbon...

A story of success

Read more

New scientific article by Aerosol

Black carbon emissions of individual cars measured...

New scientific article by Aerosol

Read more

Discontinuation of AE22/AE31

Discountinuation of the Magee Scientific models AE...

Discontinuation of AE22/AE31

Read more

SW update - 1.1.7.2.

We are pleased to announce our latest improvements...

SW update - 1.1.7.2.

Read more

New version of AE33Averager software tool

Dear Aethalometer usersDue to frequent questions...

New version of AE33Averager software tool

Read more

New publication in AMTD

The "dual-spot" Aethalometer: an improved measur...

Read more

SW update

We are pleased to announce our latest improvements...

SW update

Read more

Matevž Lenarčič gained the medal for bravery

The President of the Republic of Slovenia has awar...

Matevž Lenarčič gained the medal for bravery

Read more

Daylight saving time (DST) setting - Model AE33

We got the request from our customers to clarify ...

Read more

AE33 SW and FW update

We are pleased to announce our latest improvements...

AE33 SW and FW update

Read more

Ljubljana - Better Air Quality

Better Air QualityApart from the standard measurem...

Ljubljana - Better Air Quality

Read more

Dr. Grisa Mocnik on COM19

Climate negotiations in Warsaw - Side Event of the...

Dr. Grisa Mocnik on COM19

Read more

On Thin Ice Report

Latest World Bank report on SLCF including BC and ...

On Thin Ice Report

Read more

Janez Potočnik- EU Commissioner

Janez Potočnik- EU Commissioner for the environmen...

Read more

Arctic Athabaskan Council's Petition to IACHR

On April 23, 2013, the Arctic Athabaskan Council&n...

Read more

Black Carbon project educational collaboration

Black Carbon project educational collaboration ......

Read more

Matevž Lenarčič will fly over the North Pole

Matevž Lenarčič will fly over the North Pole. Afte...

Read more

Conference Schedule





© 2010-2012 Magee Scientific Corporation | 1916A M.L. King Jr. Way | Berkeley CA 94704 USA
website design Tomyco d.o.o.