Introduces the Atmospheric Chemistry and Dynamics Branch of the Laboratory of Atmospheres, Goddard Space Flight Center (GSFC) at the National Aeronautics and Space Administration (NASA). Aims to understand the behavior of stratospheric ozone and trace gases that influence ozone. Offers information about research projects, recent publications, and the people involved. Lists reference sources related to the work and other NASA links. Provides other related sites.

This is the third semi-annual report for NAS5-97039, covering January through June 1998. The overall objective of this project is to improve the understanding of coupling processes between atmospheric chemistry and climate. Model predictions of the future distributions of trace gases in the atmosphere constitute an important component of the input necessary for quantitative assessments of global change. We will concentrate on the changes in ozone and stratospheric sulfate aerosol, with emphasis on how ozone in the lower stratosphere would respond to natural or anthropogenic changes. The key modeling for this work are the AER 2-dimensional chemistry-transport model, the AER 2-dimensional stratospheric sulfate model, and the AER three-wave interactive model with full chemistry. We will continue developing our three-wave model so that we can help NASA determine the strengths and weaknesses of the next generation assessment models. Ko, M. K. W. and Weisenstein, Debra and Shia, Run-Lie and Sze, N. D. Goddard Space Flight Center...