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 validated to supply tips to NASA's Atmospheric results of Aviation application (AEAP) by means of comparing the appropriateness of the program's learn plan, appraising the project-sponsored effects relative to the present kingdom of medical wisdom, settling on key medical uncertainties, and suggesting study actions prone to lessen these uncertainties.
Over the previous couple of years, the panel has written periodic stories of either the subsonic aviation (Subsonic Assessment-SASS) and the supersonic aviation (Atmospheric results of Stratospheric Aircraft-AESA) parts of AEAP, together with: An meantime assessment of the Subsonic evaluate venture (1997); An intervening time overview of AEAP's Emissions Characterization and Near-Field Interactions components (1997); An period in-between evaluate of the AESA undertaking: technological know-how and growth (1998); Atmospheric results of aviation: A overview of NASA's Subsonic evaluate undertaking (1998). This file constitutes the ultimate overview of AESA and should be the final file written via this panel. the first viewers for those stories is this system managers and scientists affiliated with AEAP, even though now and again the themes mentioned are of curiosity to a much wider audience.
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Additional resources for A Review of NASA's 'Atmospheric Effects of Stratospheric Aircraft' Project
KAI N. LEE, Williams College, Williamstown, Massachusetts RICHARD A. C. S. Navy, Retired), J. , Arlington, Virginia HUGH C. MORRIS, El Dorado Gold Corporation, Vancouver, British Columbia H. RONALD PULLIAM, University of Georgia, Athens MILTON RUSSELL, University of Tennessee, Knoxville THOMAS C. SCHELLING, University of Maryland, College Park ANDREW R. SOLOW, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts VICTORIA J. S. Geological Survey, Menlo Park, California Staff ROBERT M.
The basic model for transport in the lower and middle stratosphere consists of a single meridional cell in each hemisphere. Air rises in the tropics, drifts poleward, then sinks at middle and high latitudes. This mean meridional transport, now known as the Brewer-Dobson circulation, was originally postulated based on stratospheric water vapor and ozone measurements. The extreme dryness of the middle and high latitude stratosphere can be explained by a "freeze drying" of the air by passage through the cold tropical tropopause and subsequent poleward transport (Brewer, 1949).
These changes, in turn, may have indirect effects on ozone and on global climate through coupling with radiative and dynamical atmospheric processes. Hence, assessing the atmospheric impact of a fleet of HSCTs requires not only an understanding of the chemistry of the natural stratosphere and its possible perturbations by HSCT emissions, but also a quantitative understanding of the pathways for transport of HSCT emissions, and their resulting temporal and spatial distribution within the atmosphere.
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