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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
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Goddard Space Flight Center Top Story: "Study Finds Space Shuttle Exhaust Creates Night-Shining Clouds"

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Naval Research Laboratory's web site:

NRL's Upper Atmospheric Physics (UAP) Branch:

UAP: Planetary Atmospheres Section, Polar Mesospheric Cloud Research

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The AIM mission is a part of
NASA's Sun-Earth Connection Education Forum.

Responsible Official: James M. Russell III

Web Curator: Emily M. W. Hill
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