By National Research Council, Division on Earth and Life Studies, Environment and Resources Commission on Geosciences, Panel on Atmospheric Effects of Aviation
The NRC Panel at the Atmospheric results of Aviation (PAEAN) was once tested to supply tips to NASA's Atmospheric results of Aviation application (AEAP) through comparing the appropriateness of the program's study plan, appraising the project-sponsored effects relative to the present country of medical wisdom, picking out key medical uncertainties, and suggesting examine actions prone to decrease these uncertainties.
Over the previous couple of years, the panel has written periodic studies of either the subsonic aviation (Subsonic Assessment-SASS) and the supersonic aviation (Atmospheric results of Stratospheric Aircraft-AESA) parts of AEAP, together with: An intervening time overview of the Subsonic overview venture (1997); An meantime review of AEAP's Emissions Characterization and Near-Field Interactions parts (1997); An meantime overview of the AESA undertaking: technology and development (1998); Atmospheric results of aviation: A evaluation of NASA's Subsonic review venture (1998). This file constitutes the ultimate evaluation of AESA and may be the final record written via this panel. the first viewers for those studies is this system managers and scientists affiliated with AEAP, even though at times the subjects mentioned are of curiosity to a much wider audience.
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Extra resources for A Review of NASA's 'Atmospheric Effects of Stratospheric Aircraft' Project
Some consideration should be given to the emissions from the new combustors under these conditions, to be certain that exposure of the population around airports to toxic chemicals will not be exacerbated by HSCT operations. Page 12 Aircraft Particle Formation and Emissions Aircraft flying in the stratosphere produce a large number of small volatile particles. , 1995). A large number of aerosol particles was found in the plume with peak values ranging up to 15,000 cm-3, while the background concentration was approximately 6-18 cm-3.
1998]Kärcher et al. [1998a]RB211varied72Miake-Lye et al. RB211varied72Miake-Lye et al. RB211varied72Pueschel et al. RB211varied72Hagen et al. Olympus 593Supersonic cruise230Fahey et al. RB211varied676Miake-Lye et al. RB211varied676Miake-Lye et al. RB211varied676Hagen et al. RB211varied676Pueschel et al. CFM56-2-C1slow cruise700Anderson et al. 800Anderson et al. varied2700Schröder et al. Kächer et al. [1998a] suggests that organic material may also condense on the newly formed particles thereby changing their size distribution (Yu and Turco, 1999).
The possibility that mid-latitude particle distributions would be altered substantially by HSCT exhaust has a significant influence on ozone depletion projected by assessment models. At the polar latitudes, heterogeneous chemistry contributes to ozone depletion through the conversion of slowly reacting haline compounds (primarily HCl and ClONO2) to more reactive forms, such as Cl2, that catalyze ozone destruction. Quantifying this sink for ozone requires characterizing the surface area and composition of the background and aircraft-emitted particle distributions and predicting the associated reaction rates on these surfaces at ambient conditions.
A Review of NASA's 'Atmospheric Effects of Stratospheric Aircraft' Project by National Research Council, Division on Earth and Life Studies, Environment and Resources Commission on Geosciences, Panel on Atmospheric Effects of Aviation