From:	IN%"KTOBISKA@gllsvc.jpl.nasa.gov" 12-SEP-1997 22:54:13.44
Subj:	Draft GEM UVS AWG summary

Date: Fri, 12 Sep 1997 15:54:19 -0700
From: KTOBISKA@gllsvc.jpl.nasa.gov
Subject: Draft GEM UVS AWG summary
To: TZMARTIN@glvax0.jpl.nasa.gov
Cc: jajello@jpluvs.jpl.nasa.gov, simmons@pisces.colorado.edu,
    rutzg@pisces.colorado.edu, gebben@pisces.colorado.edu,
    pryor@pisces.colorado.edu, stewart@pisces.colorado.edu,
    hord@pisces.colorado.edu

  GEM UVS AWG science objectives are covered by four general areas. In the
AWG feature campaigns to study the role and abundance of water in Jupiter's
atmosphere, the UVS will observe stratospheric aerosols along with their dynamic
processes by taking data outside 15 Rj following the SSI observations. The 
UVS will also observe northern and southern aurora in Lyman-alpha and H2 
emissions. We will attempt to capture the Io fluxtube footprint (IFT) and 
any fluxtube that maps from Europa to Jupiter in order to understand long-term 
magnetosphere and Jovian upper atmosphere interaction. A third area of 
scientific interest will be to observe brightside hydrocarbon emissions to 
develop a statistically significant acetylene and ammonia spectrum for several 
latitudes. This study will help our understanding of minor species chemistry 
related to dynamics in Jupiter's stratosphere and upper troposphere. Finally,
the UVS will observe equatorial Lyman-alpha on Jupiter's darkside to determine 
if there are long-term changes as a function of System III longitude from 
charged particle impact upon thermospheric hydrogen. Without the effect of 
sunlight, H emission variations are a function of magnetospheric plasma 
interaction and dynamical mixing from lower layers.