HR: 14:55h
AN: SA13B-06    [Abstracts]
TI: Mesospheric Simulations with the NOGAPS-ALPHA model: Applications to the Summer Polar Mesosphere and AIM data
AU: * Siskind, D E
EM: david.siskind@nrl.navy.mil
AF: Space Science Division, Naval Research Laboratory, 4555 Overlook Ave, SW, Washington, DC 20375, United States
AU: Eckermann, S D
EM: eckermann@nrl.navy.mil
AF: Space Science Division, Naval Research Laboratory, 4555 Overlook Ave, SW, Washington, DC 20375, United States
AU: McCormack, J P
EM: mccormack@nrl.navy.mil
AF: Space Science Division, Naval Research Laboratory, 4555 Overlook Ave, SW, Washington, DC 20375, United States
AU: Hoppel, K W
EM: karl.hoppel@nrl.navy.mil
AF: Remote Sensing Division, Naval Research Laboratory, 4555 Overlook Ave, SW, Washington, DC 20375, United States
AU: Russell, J M
EM: james.russell@hamptonu.edu
AF: Center for Atmospheric Sciences, Hampton University, Hampton, VA 23668, United States
AU: Bailey, S
EM: baileys@vt.edu
AF: Dept of Electrical Engineering, Virginia Polytechnic Institute, Blacksburg, VA 24061,
AU: Hervig, M
EM: m.e.hervig@gats-inc.com
AF: GATS, Inc, 11864 Canon Blvd, Newport News, VA 23606,
AU: Rusch, D
EM: david.rusch@lasp.colorado.edu
AF: Laboratory for Atmospheric and Space Physics, 1234 Innovation Dr., Boulder, CO 80303,
AB: The Navy Operational Global Atmospheric Prediction System (NOGAPS), the Department of Defense's global numerical weather prediction (NWP) system, consists of two main components: the Naval Research Laboratory (NRL) Atmospheric Variational Data Assimilation System (NAVDAS) and a global spectral general circulation model (GCM) for forecasting. NRL researchers are currently developing an Advanced-Level Physics High-Altitude (ALPHA) NOGAPS prototype that extends the currently operational 1 hPa upper boundary of NOGAPS through the mesosphere and lower thermosphere (MLT) to ~110 km. We report results of preliminary experiments with this NOGAPS-ALPHA system during May-June 2007, focused on the northern hemisphere (NH) summer mesosphere observed from the Aeronomy of Ice in the Mesosphere (AIM) satellite. These AIM-period NOGAPS-ALPHA experiments have two main goals: to provide global modeling support for AIM science and to allow objective validation of these new NOGAPS-ALPHA MLT fields using independent observations from AIM. We report results of runs which assimilate temperature and water vapor data from the SABER and MLS instruments up to ~0.01 hPa. We investigate the development of the cold NH summer mesopause in NOGAPS-ALPHA and its sensitivity to parameterized nonorographic gravity wave drag (GWD) and radiative heating/cooling by comparing with temperatures and water vapor measured by AIM's SOFIE instrument. We can also compare the variability in the NOGAPS-ALPHA temperature and water vapor fields with mesospheric cloud occurrence statistics measured by CIPS on AIM.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0341 Middle atmosphere: constituent transport and chemistry (3334)
DE: 3315 Data assimilation
SC: SPA-Aeronomy [SA]
MN: 2007 Fall Meeting