Quantification of uncertainty in remote sensing-based school bus CO and hydrocarbon emission factors
- North Carolina State Univ., Raleigh, NC (United States). Dept. of Civil Engineering
There is growing recognition of the need to obtain on-road emissions data that are representative of actual driving conditions. Furthermore, relatively little attention has been given to emissions from specialized categories of vehicles, such as school buses. This project employs remote sensing technology to obtain on-road emissions data for these vehicles. The results of this project will include estimates of on-road carbon monoxide (CO) and hydrocarbon (HC) emissions for school buses in the form of emission factors. The emission factors are developed on a grams per gallon and grams per mile basis. Statistical techniques, including classical analytical approaches and numerical modeling techniques are used to characterize the precision and accuracy of the estimated emission factors, and to distinguish variability in inter-vehicle emissions from uncertainty regarding the fleet average emissions. The quantification of uncertainty regarding the average emission factors enables uncertainty in school bus emissions to be evaluated with respect to other sources of uncertainty in an emission inventory, and it is also useful for prioritizing future research and data collection.
- OSTI ID:
- 351694
- Report Number(s):
- CONF-970677--
- Country of Publication:
- United States
- Language:
- English
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