Optically Measured Black and Particulate Brown Carbon Emission Factors from Real-World Residential Combustion Predominantly Affected by Fuel Differences

2020 ◽  
Vol 55 (1) ◽  
pp. 169-178
Author(s):  
Lu Zhang ◽  
Zhihan Luo ◽  
Yaojie Li ◽  
Yuanchen Chen ◽  
Wei Du ◽  
...  
Keyword(s):  
Real World ◽  
Carbon Emission ◽  
Emission Factors ◽  
Brown Carbon ◽  
Residential Combustion

scholarly journals Plume-based analysis of vehicle fleet air pollutant emissions and the contribution from high emitters

2015 ◽  
Vol 8 (3) ◽  
pp. 2881-2912 ◽  
Author(s):  
J. M. Wang ◽  
C.-H. Jeong ◽  
N. Zimmerman ◽  
R. M. Healy ◽  
D. K. Wang ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Black Carbon ◽  
Time Resolution ◽  
Real World ◽  
Vehicle Emissions ◽  
Particle Number ◽  
Emission Factors ◽  
Air Pollutant ◽  
Automated Identification ◽  
Vehicle Fleet

Abstract. An automated identification and integration method has been developed to investigate in-use vehicle emissions under real-world conditions. This technique was applied to high time resolution air pollutant measurements of in-use vehicle emissions performed under real-world conditions at a near-road monitoring station in Toronto, Canada during four seasons, through month-long campaigns in 2013–2014. Based on carbon dioxide measurements, over 100 000 vehicle-related plumes were automatically identified and fuel-based emission factors for nitrogen oxides; carbon monoxide; particle number, black carbon; benzene, toluene, ethylbenzene, and xylenes (BTEX); and methanol were determined for each plume. Thus the automated identification enabled the measurement of an unprecedented number of plumes and pollutants over an extended duration. Emission factors for volatile organic compounds were also measured roadside for the first time using a proton transfer reaction time-of-flight mass spectrometer; this instrument provided the time resolution required for the plume capture technique. Mean emission factors were characteristic of the light-duty gasoline dominated vehicle fleet present at the measurement site, with mean black carbon and particle number emission factors of 35 mg kg−1 and 7.7 × 1014 kg−1, respectively. The use of the plume-by-plume analysis enabled isolation of vehicle emissions, and the elucidation of co-emitted pollutants from similar vehicle types, variability of emissions across the fleet, and the relative contribution from heavy emitters. It was found that a small proportion of the fleet (< 25%) contributed significantly to total fleet emissions; 95, 93, 76, and 75% for black carbon, carbon monoxide, BTEX, and particle number, respectively. Emission factors of a single pollutant may help classify a vehicle as a high emitter. However, regulatory strategies to more efficiently target multi-pollutants mixtures may be better developed by considering the co-emitted pollutants as well.

Concentration, optical characteristics, and emission factors of brown carbon emitted by on-road vehicles

2021 ◽  
pp. 151307
Author(s):  
Ru-Jin Huang ◽  
Wei Yuan ◽  
Lu Yang ◽  
Huinan Yang ◽  
Wenjuan Cao ◽  
...  
Keyword(s):  
Emission Factors ◽  
Optical Characteristics ◽  
Road Vehicles ◽  
Brown Carbon

A framework for development of real-world motorcycle driving cycle in India

2020 ◽  
pp. 095440702097753
Author(s):  
Masilamani Sithananthan ◽  
Ravindra Kumar
Keyword(s):  
Fuel Economy ◽  
Real World ◽  
State Of The Art ◽  
Emission Factors ◽  
Driving Cycle ◽  
Driving Cycles ◽  
Traffic Scenario

This paper proposed a framework for development of real-world driving cycle in India after a thorough review and comparison of motorcycle driving cycles used in different countries. A limited state-of-the art work for the development of driving cycles for motorcycles is available. The motorcycle driving cycles developed by different countries differ from each other in terms of their driving cycle characteristics, emission factors, and fuel economy. This paper reviewed the parameters of real-world driving cycles of motorcycles and compares the same with legislative cycles concerning their characteristics and emissions. The parameters of real-world driving cycles and Indian legislative cycle (IDC) deviate significantly from other legislative cycles in the range of −97% to +1172% and −74% to 284% respectively. The emission factors of the legislative cycle do not match with the realistic emissions measured by real-world driving cycles. This is due to the reason that the legislative cycles do not represent the current traffic scenario and hence need to be revised. A framework is proposed to develop a real-world driving cycle in India.

scholarly journals Tropical deforestation drivers and associated carbon emission factors derived from remote sensing data

2019 ◽  
Vol 14 (9) ◽  
pp. 094022 ◽  
Author(s):  
V De Sy ◽  
M Herold ◽  
F Achard ◽  
V Avitabile ◽  
A Baccini ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Carbon Emission ◽  
Remote Sensing Data ◽  
Emission Factors ◽  
Tropical Deforestation ◽  
Sensing Data

scholarly journals Trends in black carbon and size-resolved particle number concentrations and vehicle emission factors under real-world conditions

2017 ◽  
Vol 165 ◽  
pp. 155-168 ◽  
Author(s):  
Patricia Krecl ◽  
Christer Johansson ◽  
Admir Créso Targino ◽  
Johan Ström ◽  
Lars Burman
Keyword(s):  
Black Carbon ◽  
Real World ◽  
Particle Number ◽  
Emission Factors ◽  
Vehicle Emission
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