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 NAVAL 
      RESEARCH LABORATORY
  
       The Upper Atmospheric Physics branch of NRL's Space Science 
        Division is an internationally recognized center for the study of radiative, 
        chemical and dynamical processes in the Earth's middle and upper atmosphere. 
        NRL's Middle Atmosphere High Resolution Spectrograph Investigation flew 
        on the space shuttle twice to measure hydroxyl (OH) in the middle atmosphere. 
        The second mission in August, 1997 yielded unprecedented insight on the 
        distribution of water vapor (H2O) and PMCs in the Arctic summer mesosphere 
        that has led to new ideas on PMCs and their formation environment. NRL 
        brings this expertise in data analysis and modeling to AIM. 
         
          | Contact Information |   
          | Dr. David E. Siskind Code 7641
 Naval Research Laboratory
 Washington, DC 20375
 Phone: 202.767.0928
 Fax: 202.404.8090
 siskind@uap2.nrl.navy.mil
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