Other
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsa32b..03k&link_type=abstract
American Geophysical Union, Fall Meeting 2004, abstract #SA32B-03
Other
2427 Ionosphere/Atmosphere Interactions (0335), 0355 Thermosphere: Composition And Chemistry, 0358 Thermosphere: Energy Deposition
Scientific paper
TIMED is flying in an atmospheric region where signatures of forcing from below and forcing from geospace intermingle in complex ways, where questions remain regarding the influence of feedbacks from the upper atmosphere on global geospace system behavior, and where as yet poorly understood processes couple solar variability to lower altitudes in the neutral atmosphere but coupling pathways are masked by large inherent atmospheric variability. TIMED has been unique among geospace missions; it is the first to combine space observations with dedicated systematic ground-based observations. TIMED investigations, over the first 3 years, have been enriched by collaborations with a suite of operating SEC satellite missions, sampling the state of the heliosphere and geospace and providing valuable context for TIMED results. In return, TIMED has provided new information about the geoeffectiveness of disturbances and the effects of the atmosphere on connected regions. Finally, the close coupling between TIMED data and large-scale models of the MLTI region provided a fundamental means of interpreting observations, separating drivers and looking for signals related to solar variability. We report, here, a few of the key new findings from these collaborations, including: (1) the identification of new coupling pathways linking geomagnetic disturbances to the lower atmosphere, (2) the first comprehensive observations of the NO thermostat and its drivers in action, (3) new sources of periodicity in the MLTI region (4) discovery of oxygen aurora at low latitudes, (5) new views of stormtime neutral composition changes & their feedbacks, and (6) MLTI response to solar wind pressure hits. Further details of these topics will be given in other talks within this session.
Crowley Geoff
Goncharenko Larisa P.
Hagan Maura E.
Kozyra Janet U.
Lu Gang
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