Measurement of Gaseous HAP Emissions from Idling Aircraft as a Function of Engine and Ambient Conditions (2012) / Chapter Skim
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Appendix D - Links Between Emissions and Air Quality in the Terminal and Fence Line
Appendix D - Links Between Emissions and Air Quality in the Terminal and Fence Line
Pages 85-87
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From page 85... ...
Data collected as part of this project can partially elucidate the nature of air quality at these locations, as well as in downwind neighborhoods. Overall the emerging conclusion is that the air on airport grounds and near airports is usually not well mixed, and characterized by "background urban" air most of the time punctuated by occasional plumes of high concentrations that, depending on pollutant, can increase the average concentration considerably.
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From page 86... ...
Between 5:45 and 6:07, the mobile lab was positioned near the runways and observed short "spikes" of exhaust plumes. Between 6:20 and 6:50, the mobile lab was positioned several 100 meters downwind of aircraft and GSE activity, and observed an overall increase in the concentrations of all species, with "smoother" plumes that cannot always be individually identified.
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From page 87... ...
As a result of the ~12 aircraft whose exhaust was sampled during this 35 minute time period, the average concentrations were increased to 1.4 ppbv and 187 × 103 particles/cm3 -- results very similar to the ORD data shown above. San Leandro Measurements At the conclusion of the JETS-APEX2 study, the Aerodyne Mobile Laboratory spent two days at the San Leandro Marina (Figure D-3)
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