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Instrument: TIDI : TIMED Doppler Interferometer
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Description
The Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics
(TIMED) satellite is a NASA Office of Space Sciences Sun-Earth
Connection (SEC) mission to study the mesosphere and lower
thermosphere from about 60 to 180 km altitude, and understand
how solar variability and lower atmosphere processes combine to
make this one of the most dynamic and variable regions of the
terrestrial atmosphere.

TIMED carries four instruments, a Global Ultraviolet Imager
(GUVI), an infrared limb-sounder (SABER), a solar ultraviolet
spectrometer (SEE), and a Fabry-Perot interferometer
(TIDI). Data are available through the TIMED Mission Data Center
and the individual instrument web sites.

TIDI performs ultra-high-spectral-resolution measurements of
airglow layers in the mesosphere and lower thermosphere in order
to measure winds and temperatures using the doppler shifts and
line shapes of spectral features. The instrument was built at
the University of Michigan Space Physics Research Lab (SPRL),
and is operated as a collaborative project between SPRL and
HAO/NCAR.

[Summary provided by UCAR]