In the winter of 1999, the University of Denver conducted a remote sensing study at Yellowstone National Park. The objective of the study was to identify the effect of oxygenated fuels on the exhaust emissions from snowmobiles. Ratios of CO, HC and toluene to CO 2 were measured and used to calculate %CO, %HC and parts per million of toluene. From the measured ratios we also calculated the grams...
