A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Spatial Variability of Unpaved Road Dust PM10 Emission Factors near El Paso, Texas
The testing re-entrained aerosol kinetic emissions from roads technique is compared with distance-based emission factors (EFs; g/VKT) measured downwind of a dirt road by using towers instrumented with real-time meteorological and particle sensors at multiple heights. The emission potential (EP), defined as the EF divided by the vehicle speed (m/sec), and weight index permits the inter-comparison of emissions from multiple roadways surveyed by the TRAKER vehicle. A survey of 72 km of un-paved roads on the Ft. Bliss Military Base near El Paso, Texas, indicated that 60% of all measured EPs fell between 6.7 (g/VKT)/(m/sec) and 9.6 (g/VKT)/(m/sec). The EP measured across the base was ~50% lower than those collected in the vicinity of the instrumented towers. This implies that EFs measured for other vehicles on the same test section should be reduced by 50% to more accurately represent EFs for the entire military base.
Using geographic information system-based soil maps, the inferred EFs are related to differences in soil types over the survey area. Variations among five different soil types accounted for <10% of variation in EP. Individual measurements using the testing re-entrained aerosol kinetic emissions from roads technique did show larger spatial variations in EP; however, these were not effectively captured by the soil classifications, partly because of the comparatively coarse spatial classification used in the soil survey data.
Spatial Variability of Unpaved Road Dust PM10 Emission Factors near El Paso, Texas
The testing re-entrained aerosol kinetic emissions from roads technique is compared with distance-based emission factors (EFs; g/VKT) measured downwind of a dirt road by using towers instrumented with real-time meteorological and particle sensors at multiple heights. The emission potential (EP), defined as the EF divided by the vehicle speed (m/sec), and weight index permits the inter-comparison of emissions from multiple roadways surveyed by the TRAKER vehicle. A survey of 72 km of un-paved roads on the Ft. Bliss Military Base near El Paso, Texas, indicated that 60% of all measured EPs fell between 6.7 (g/VKT)/(m/sec) and 9.6 (g/VKT)/(m/sec). The EP measured across the base was ~50% lower than those collected in the vicinity of the instrumented towers. This implies that EFs measured for other vehicles on the same test section should be reduced by 50% to more accurately represent EFs for the entire military base.
Using geographic information system-based soil maps, the inferred EFs are related to differences in soil types over the survey area. Variations among five different soil types accounted for <10% of variation in EP. Individual measurements using the testing re-entrained aerosol kinetic emissions from roads technique did show larger spatial variations in EP; however, these were not effectively captured by the soil classifications, partly because of the comparatively coarse spatial classification used in the soil survey data.
Spatial Variability of Unpaved Road Dust PM10 Emission Factors near El Paso, Texas
Kuhns, Hampden (author) / Gillies, John (author) / Etyemezian, Vicken (author) / Dubois, David (author) / Ahonen, Sean (author) / Nikolic, Djordje (author) / Durham, Clyde (author)
2005-01-01
10 pages
Article (Journal)
Electronic Resource
Unknown
Statistical Framework Using GIS to Estimate Unpaved Road VMT for PM10 Emission Inventories
| Online Contents | 2004
Long-Term Efficiencies of Dust Suppressants to Reduce PM10 Emissions from Unpaved Roads
| Taylor & Francis Verlag | 1999
Field demonstration of an unpaved road dust suppressant
| Tema Archive | 1998
| British Library Online Contents | 2015