The dynamics of the HSCT environmentAssessments of the impact of aircraft engine exhausts on stratospheric ozone levels are currently limited to 2D zonally-averaged models which, while completely representing chemistry, involve high parameterization of transport processes. Prospective 3D models under development by NASA-Goddard will use winds from a data-assimilation procedure; the upper troposphere/lower stratosphere behavior of one such model has been verified by direct comparison of model simulations with satellite, balloon, and sonde measurements. Attention is presently given to the stratosphere/troposphere exchange and nonzonal distribution of aircraft engine exhaust.
Douglass, Anne R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Rood, Richard B. (NASA Goddard Space Flight Center Greenbelt, MD, United States)