Get A Review of NASA's 'Atmospheric Effects of Stratospheric PDF

By National Research Council, Division on Earth and Life Studies, Environment and Resources Commission on Geosciences, Panel on Atmospheric Effects of Aviation

ISBN-10: 0309065895

ISBN-13: 9780309065894

ISBN-10: 0585197989

ISBN-13: 9780585197982

The NRC Panel at the Atmospheric results of Aviation (PAEAN) was once confirmed to supply counsel to NASA's Atmospheric results of Aviation software (AEAP) by way of comparing the appropriateness of the program's examine plan, appraising the project-sponsored effects relative to the present nation of clinical wisdom, choosing key medical uncertainties, and suggesting examine actions prone to lessen these uncertainties.

Over the previous few 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) elements of AEAP, together with: An period in-between evaluate of the Subsonic evaluate undertaking (1997); An meantime evaluation of AEAP's Emissions Characterization and Near-Field Interactions parts (1997); An meantime overview of the AESA venture: technological know-how and development (1998); Atmospheric results of aviation: A overview of NASA's Subsonic review venture (1998). This record constitutes the ultimate evaluate of AESA and should be the final document written by way of this panel. the first viewers for those reviews is this system managers and scientists affiliated with AEAP, even though often times the themes mentioned are of curiosity to a much broader audience.

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Extra info for A Review of NASA's 'Atmospheric Effects of Stratospheric Aircraft' Project

Example text

The observed high concentrations of ozone in the lower high latitude stratosphere, far from the tropical region of maximum photochemical production, can also be explained by air drifting poleward out of the topics and sinking at high latitudes (Dobson, 1956). The observed distribution of other trace species in the stratosphere also fits the Brewer-Dobson model for transport. This general description of stratospheric transport is well accepted. , 1991). , 1995). The rate of upwelling, both on an annual average and considering seasonal variations, is reasonably well modeled by current radiative heating algorithms, as demonstrated in Mote et al.

If these number densities are used, the model of Yu and Turco (1998) cannot reproduce the observations, regardless of the conversion factor of SO2 used. In addition, even with the ions, the models still have difficulties reproducing the measured size distributions, because the particles are still smaller than the observed ones. Another hypothesis Page 15 (table continued from previous page) EnginesFlight ConditionsFuel S Content (ppmm)ReferencecruiseunknownAnderson et al. [1998a]unknownPetzold and Schroeder [1998]varied20Schröder et al.

1998]RB211varied72Miake-Lye et al. [1998]RB211varied72Pueschel et al. [1998]RB211varied72Hagen et al. [1998]Olympus 593Supersonic cruise230Fahey et al. [1998]RB211varied676Miake-Lye et al. [1998]RB211varied676Miake-Lye et al. [1998]RB211varied676Hagen et al. [1998]RB211varied676Pueschel et al. [1998]CFM56-2-C1slow cruise700Anderson et al. [1998]800Anderson et al. [1998]varied2700Schröder et al. [1998]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).

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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


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