HR: 13:40h
AN: SA33C-01 INVITED    [Abstracts]
TI: Overview of TIMED CEDAR observations showing the MLTI system response to changing drivers from solar maximum to solar minimum
AU: * Kozyra, J U
EM: jukozyra@umich.edu
AF: University of Michigan, Atmospheric, Oceanic & Space Sciences, 2455 Hayward St., Ann Arbor, MI 48109-2143, United States
AU: Crowley, G
EM: gcrowley@astraspace.net
AF: ASTRA, 11118 Quail Pass, San Antonio, TX 78249-3143, United States
AU: Doe, R A
EM: doe@sri.com
AF: SRI International Ctr Geospace Studies, 333 Ravenswood Ave G-284, Menlo Park, CA 94025-0000, United States
AU: Mlynczak, M G
EM: m.g.mlynczak@larc.nasa.gov
AF: NASA Langley Research Ctr, 21 Langley Blvd, Hampton, VA 23681-2199, United States
AU: Paxton, L J
EM: 240-475-4850
AF: The Johns Hopkins University Applied Physics Lab, 11100 John Hopkins Rd, Laurel, MD 20723-6099, United States
AU: Skinner, W R
EM: Wskinner@umich.edu
AF: University of Michigan, Atmospheric, Oceanic & Space Sciences, 2455 Hayward St., Ann Arbor, MI 48109-2143, United States
AU: Solomon, S C
EM: stans@ucar.edu
AF: National Ctr Atmospheric Research, High Altitude Observatory, 1850 Table Mesa Dr., Boulder, CO 80307-3000, United States
AU: Talaat, E
EM: elsayed.talaat@jhuapl.edu
AF: The Johns Hopkins University Applied Physics Lab, 11100 John Hopkins Rd, Laurel, MD 20723-6099, United States
AU: Woods, T N
EM: tom.woods@lasp.colorado.edu
AF: University of Colorado, Lab Atmos & Space Physics, 1234 Innovation Dr, Boulder, CO 80303-0000, United States
AU: Wu, Q
EM: qwu@ucar.edu
AF: National Ctr Atmospheric Research, High Altitude Observatory, 1850 Table Mesa Dr., Boulder, CO 80307-3000, United States
AU: Yee, J
EM: Sam.Yee@jhuapl.edu
AF: The Johns Hopkins University Applied Physics Lab, 11100 John Hopkins Rd, Laurel, MD 20723-6099, United States
AB: TIMED CEDAR observations have spanned a large range of solar activity conditions from just past solar maximum during which active region eruptions dominate, through the descending phase during which corotating interaction regions reach a maximum, and now fast approaching a 22-year minimum in magnetic activity during which inputs from below become increasingly prominent against a magnetically quieting state. During this interval, TIMED observed the response of the MLTI to a large number of powerful X-class flares, severe solar proton events, 7 superstorms, newly identified sawtooth events, high dynamic pressure during both southward and northward IMF, and to the strongest CIR-driven magnetic activity of the last 4 solar cycles. We will summarize new knowledge about the response of the MLTI to the very different characteristic inputs from this range of drivers and explore resulting insights into the behavior of the geospace system. As the ascending phase of solar cycle 24 begins, TIMED will observe the response of the MLTI to a new regime in the balance between solar irradiance and magnetic activity, specifically to rising F10.7 in the presence of low magnetic activity. An developing list of unanswered questions related to the MLTI state under these driving conditions will be presented in preparation for continuing community interactions in support of TIMED CEDAR MLTI science.
DE: 0310 Airglow and aurora
DE: 0342 Middle atmosphere: energy deposition (3334)
DE: 0358 Thermosphere: energy deposition (3369)
DE: 2427 Ionosphere/atmosphere interactions (0335)
DE: 2479 Solar radiation and cosmic ray effects
SC: SPA-Aeronomy [SA]
MN: 2007 Fall Meeting