Remote Sensing of Ammonia and Sulfur Dioxide from On-road Light Duty Vehicles

Authors

Daniel A. Burgard, University of Puget Sound
Gary A. Bishop, University of DenverFollow
Donald H. Stedman, University of Denver

Publication Date

2006

Document Type

Article

Organizational Units

Chemistry and Biochemistry

Keywords

Atmospheric chemistry, Emissions, Pollutants

Abstract

This study reports the largest data set of on-road, fuel-based mass emissions of ammonia and sulfur dioxide from vehicles of known make, model year, and fuel type. Ammonia is the first pollutant observed for which the emissions decrease with increasing fleet age from 10 to 20 years. The fixed nitrogen emission ratio is 15.0% by mass and 24.7% by mole, larger than current models predict. Diesel fueled vehicles emit more SO₂ than gasoline, and unexpectedly, gasoline SO₂ emissions decrease continuously with newer model year vehicles.

Publication Statement

Copyright held by the American Chemical Society.

Recommended Citation

Burgard, D. A.; Bishop, G. A.; Stedman, D. H., Remote sensing of ammonia and sulfur dioxide from on-road light duty vehicles. Environ. Sci. Technol. 2006, 40, 7018-7022, DOI: 10.1021/es061161r