Methods for quantifying variability and uncertainty in AP-42 emission factors: case studies for natural gas-fueled engines.

@article{Frey2003MethodsFQ,
  title={Methods for quantifying variability and uncertainty in AP-42 emission factors: case studies for natural gas-fueled engines.},
  author={H Christopher Frey and Song Ping Li},
  journal={Journal of the Air & Waste Management Association},
  year={2003},
  volume={53 12},
  pages={1436-47}
}
Quantitative methods for characterizing variability and uncertainty were applied to case studies of oxides of nitrogen and total organic carbon emission factors for lean-burn natural gas-fueled internal combustion engines. Parametric probability distributions were fit to represent inter-engine variability in specific emission factors. Bootstrap simulation was used to quantify uncertainty in the fitted cumulative distribution function and in the mean emission factor. Some methodological… CONTINUE READING

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