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Emissions Quantification Methodology Report: ACRP 02-80 Quantifying Emissions Reductions at Airports from the Use of Alternative Jet Fuel Emissions Quantification Methodology Report Page 62 8.0 Instructions to Use the Alternative Jet Fuel Assessment Tool The Alternative Jet Fuel Assessment Tool is a Microsoft Excel-based tool designed to help airports estimate the reduction in aircraft landing takeoff (LTO) cycle emissions from the use of SAJF. The tool models emissions of SOx, nvPM, CO, UHC, NOx, and HAPs. The homepage of the tool shows two options to estimate the percentage reduction in emissions at the specified SAJF blend percentage as shown in Figure 22. Option 1 evaluates emissions reduction based on the airportâs annual emissions inventory for each pollutant. Option 2 evaluates emissions reduction based on a description of the airportâs operational characteristics. Figure 22: Home page of the Alternative Jet Fuel Assessment Tool If the user selects Option 1 on the Home page, the tool displays an Inputs page shown in Figure 23. The text box on the left contains instructions for data entry and page navigation. Figure 23: Layout of the Inputs page for Option 1 The user can enter airport emissions information by pollutant and the alternative jet fuel blend percentage, then click on the Results button in the navigation bar to view the analysis. The user can return to the Home page or clear the form using the Reset button. The tool will not display the Results page
Emissions Quantification Methodology Report: ACRP 02-80 Quantifying Emissions Reductions at Airports from the Use of Alternative Jet Fuel Emissions Quantification Methodology Report Page 63 unless all inputs have been entered; an error message will notify the user of missing inputs as shown in Figure 24. Figure 24: Example of an error message when required input information is missing If the user selects Option 2 on the Home page, the tool displays an input form shown in Figure 25. The text box on the left contains instructions for data entry and page navigation. The user can enter the number of non-piston and piston operations and alternative jet fuel blend percentage. The user can select the airport category and airport operations description, then click on the Results button in the navigation bar to view the analysis. As with the Option 1 Inputs page, the user can return to the Home page or clear the form using the Reset button. The tool will not display the Results page unless all inputs have been entered; an error message will notify the user of missing inputs. Figure 25: Layout of Inputs page for Option 2 The Results pages for both input options are the same. As shown in Figure 26, the left panel summarizes the user inputs and provides navigation instructions. The center panel displays the expected reduction in each pollutantâs emissions along with an uncertainty bound at the specified SAJF blend percentage. The right panel plots the expected reduction in each pollutantâs emission at various SAJF blend percentages.
Emissions Quantification Methodology Report: ACRP 02-80 Quantifying Emissions Reductions at Airports from the Use of Alternative Jet Fuel Emissions Quantification Methodology Report Page 64 The plot also displays a vertical red line which indicates the SAJF blend percentage the user entered on the Inputs page. The user can return to the Home page or the Inputs page using the navigation bar. Figure 26: Layout of the Results page