CEDAR-TIMED
The CEDAR-TIMED collaboration combines the ground-based datasets with data
available from TIMED and other spacecraft. The
TIMED (Thermosphere Ionosphere Mesosphere Energetics and
Dynamics) spacecraft, launched on December 7, 2001 and supported by NASA, is
studying the least understood portion of the mesosphere and lower thermosphere,
located at ~40-180 km above the surface. It provides continuous global
measurements of such parameters as temperatures, composition, and wind flow. A
network of ground-based observatories, sponsored by NSF through the
CEDAR program, provides information about the Earth's
upper atmosphere at fixed locations. Combination of continuous data coverage
from ground-based instruments at fixed locations with global coverage from the
TIMED allows researchers to pursue comprehensive global studies with
unprecedented detail.
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