Dr. Charles Jackman
               Atmospheric Chemistry and Dynamics Branch
                    Laboratory for Atmospheres
                            NASA GSFC

Ph.D. University of Florida (1978)
B.S.  Nebraska Wesleyan University (1972)

Dr. Jackman has been a civil servant at NASA GSFC since 1980.  He works
with multi-dimensional atmospheric chemistry and transport models of
the Earth and has primarily conducted research on the stratosphere and
mesosphere (middle atmosphere).  He has investigated both natural
and human-made influences on the middle atmosphere with a primary
focus on the impact on ozone.  Natural influences studied include
osolar proton events, solar cycle ultraviolet flux changes, galactic
cosmic rays, highly relativistic electron precipitation events, and
thermospheric variations.  Human-made influences studied include 
chlorofluorocarbons and halons, supersonic transport planes, and 
Space Shuttle and Titan rocket launches.  Dr. Jackman also serves as
Project Scientist for the Upper Atmosphere Research Satellite.
Further information is available at: 
      http://code916.gsfc.nasa.gov/People/Jackman/