NASA's Atmospheric Effects of Aviation Project: Results of the August 1999 Aerosol Measurement Intercomparison Workshop, Laboratory Phase

During August 1-14, 1999, NASA's Atmospheric Effects of Aviation Project (AEAP) convened a workshop at the NASA Langley Research Center to try to determine why such a wide variation in aerosol emissions indices and chemical and physical properties have been reported by various independent AEAP-supported research teams trying to characterize the exhaust emissions of subsonic commercial aircraft. This workshop was divided into two phases, a laboratory phase and a field phase. The laboratory phase consisted of supplying known particle number densities (concentrations) and particle size distributions to a common manifold for the participating research teams to sample and analyze. The field phase was conducted on an aircraft run-up pad. Participating teams actually sampled aircraft exhaust generated by a Langley T-38 Talon aircraft at 1 and 9 m behind the engine at engine powers ranging from 48 to 100 percent. Results from the laboratory phase of this intercomparison workshop are reported in this paper.

[1]  A. Wiedensohler,et al.  Modification and calibration of a TSI 7610 condensation particle counter for high altitude airborne measurements , 1996 .

[2]  Randall R. Friedl,et al.  Atmospheric Effects of Subsonic Aircraft: Interim Assessment Report of the Advanced Subsonic Technology Program , 1997 .

[3]  Philip D. Whitefield,et al.  Particulates and Aerosols Sampling from Combustor Rigs using the UMR Mobile Aerosol Sampling System (MASS) , 1995 .

[4]  K. Snetsinger,et al.  Black carbon (soot) aerosol in the lower stratosphere and upper troposphere , 1992 .

[5]  J. Hudson,et al.  Intercomparison Study of the Size-Dependent Counting Efficiency of 26 Condensation Particle Counters , 1997 .

[6]  Heinz Fissan,et al.  Design and evaluation of a nanometer aerosol differential mobility analyzer (Nano-DMA) , 1998 .

[7]  D. R. Hanson,et al.  Laboratory studies of particle nucleation: Initial results for H2SO4, H2O, and NH3 vapors , 1999 .

[8]  D. Hagen,et al.  SIZE AND HYDRATION CHARACTERISTICS OF LABORATORY SIMULATED JET ENGINE COMBUSTION AEROSOLS , 1993 .

[9]  W. R. Cofer,et al.  Airborne observations of aircraft aerosol emissions II: Factors controlling volatile particle production , 1998 .

[10]  W. R. Cofer,et al.  Calibration and demonstration of a condensation nuclei counting system for airborne measurements of aircraft exhausted particles , 1998 .

[11]  Steven L. Baughcum,et al.  Year 2015 Aircraft Emission Scenario for Scheduled Air Traffic , 1998 .

[12]  C. Wey.  Engine Gaseous, Aerosol Precursor and Particulate at Simulated Flight Altitude Conditions , 1998 .

[13]  D. Hagen,et al.  Particulate sizing and emission indices for a jet engine exhaust sampled at cruise , 1998 .

[14]  D. Fahey,et al.  The role of sulfur emission in volatile particle formation in jet aircraft exhaust plumes , 1997 .

[15]  W. R. Cofer,et al.  An assessment of aircraft as a source of particles to the upper troposphere , 1999 .

[16]  H. A. Wallio,et al.  SOx oxidation and volatile aerosol in aircraft exhaust plumes depend on fuel sulfur content , 1998 .

[17]  Donald R. Bagwell,et al.  Airborne observations of aircraft aerosol emissions I: Total nonvolatile particle emission indices , 1998 .

[18]  Alan Mortlock,et al.  Military, Charter, Unreported Domestic Traffic and General Aviation 1976, 1984, 1992, and 2015 Emission Scenarios , 1998 .

[19]  Philip D. Whitefield,et al.  A field sampling of jet exhaust aerosols , 1992 .

[20]  A. Petzold,et al.  Ultrafine particle size distributions measured in aircraft exhaust plumes , 2000 .

[21]  E Anderson Bruce,et al.  The NASA STI Program Office provides , 1997 .

[22]  Benjamin Y. H. Liu,et al.  Performance of TSI 3760 condensation nuclei counter at reduced pressures and flow rates , 1991 .