HR: 10:40h
AN: SA52A-02    [Abstracts]
TI: Tides in a whole atmosphere model
AU: * Akmaev, R A
EM: Rashid.Akmaev@noaa.gov
AF: CIRES, Univ. of Colorado, Boulder, CO 80309, United States
AU: Fuller-Rowell, T J
EM: Tim.Fuller-Rowell@noaa.gov
AF: CIRES, Univ. of Colorado, Boulder, CO 80309, United States
AU: Wu, F
EM: Fei.Wu@noaa.gov
AF: CIRES, Univ. of Colorado, Boulder, CO 80309, United States
AU: Wang, H
EM: Houjun.Wang@noaa.gov
AF: CIRES, Univ. of Colorado, Boulder, CO 80309, United States
AU: Maruyama, N
EM: Naomi.Maruyama@noaa.gov
AF: CIRES, Univ. of Colorado, Boulder, CO 80309, United States
AU: Iredell, M
EM: Mark.Iredell@noaa.gov
AF: EMC, NWS/NCEP,
AU: Moorthi, S
EM: Shrinivas.Moorthi@noaa.gov
AF: EMC, NWS/NCEP,
AU: Juang, H
EM: Henry.Juang@noaa.gov
AF: EMC, NWS/NCEP,
AU: Hou, Y
EM: Yu-Tai.Hou@noaa.gov
AF: EMC, NWS/NCEP,
AU: Millward, G H
EM: George.Millward@noaa.gov
AF: LASP, Univ. of Colorado, United States
AU: Richmond, A
EM: Richmond@ucar.edu
AF: HAO, NCAR, United States
AU: Maute, A
EM: Maute@ucar.edu
AF: HAO, NCAR, United States
AB: The upper atmosphere and ionosphere clearly exhibit variability on global scales with periods from several hours to several days, characteristic of lower-atmospheric planetary waves and tides. To study the origin, vertical propagation, and possible effects of these planetary-scale perturbations on the coupled thermosphere- ionosphere-electrodynamics system, a new model of Integrated Dynamics through Earth Atmosphere (IDEA) is being developed under a NASA sponsored collaborative project between the University of Colorado and National Weather Service's (NWS) Environmental Modeling and Space Environment Centers. The IDEA model interactively couples a Whole Atmosphere Model (WAM) with Global Ionosphere-Plasmasphere (GIP) and electrodynamics models. WAM is a 150-layer general circulation model based on NWS's operational weather prediction Global Forecast System (GFS), extended from its nominal top altitude of about 60 km to over 600 km. It incorporates relevant physical processes in the extended domain, ranging from the hydrological cycle, cloud physics, and atmosphere-surface exchanges in the troposphere, to solar and Joule heating and mutual diffusion of major species in the thermosphere. Preliminary simulations reveal strong tidal waves in the upper atmosphere with a substantial contribution from non-migrating modes. The structure and variability of tides in WAM will be presented and discussed.
DE: 2487 Wave propagation (0689, 3285, 4275, 4455, 6934)
DE: 3334 Middle atmosphere dynamics (0341, 0342)
DE: 3369 Thermospheric dynamics (0358)
DE: 3389 Tides and planetary waves
SC: SPA-Aeronomy [SA]
MN: 2007 Joint Assembly