HR: 1340h
AN: SA53A-1152    [Abstracts]
TI: EOS MLS Observations of Recent Two-Day Wave events
AU: * Limpasuvan, V
EM: var@coastal.edu
AF: Department of Chemistry and Physics, Coastal Carolina University, Conway, SC 29526
AU: Wu, D L
EM: dwu@mls.jpl.nasa.gov
AF: NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109
AU: Schwartz, M J
EM: michael@mls.jpl.nasa.gov
AF: NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109
AU: Waters, J W
EM: joe@mls.jpl.nasa.gov
AF: NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109
AU: Wu, Q
EM: qwu@ucar.edu
AF: High Altitude Observatory, NCAR, Boulder, CO 80307
AU: Killeen, T L
EM: killeen@ucar.edu
AF: High Altitude Observatory, NCAR, Boulder, CO 80307
AB: Episodes of two-day wave are observed using the recently launched Microwave Limb Sounder (MLS) aboard NASA's Earth Observing System Aura mission. Wave-induced disturbances are identified in temperature, water vapor, carbon monoxide, and MLS line-of-sight wind (a special MLS product, now under development). During January-March 2005, temperature and wind amplitudes as large as 9 K and 50 m/s are observed near 90 km. The wave disturbance is initially confined in the mid- to low summer latitudes where the climatological summer easterly jet exhibits strong shear. The wave then develops features akin to the third Rossby-gravity global normal mode, with a weak temperature disturbance in the winter hemisphere (anti-symmetric about the equator) and wind disturbance over the equator. The two-day wave events during June-August 2005 will also be presented.
DE: 0340 Middle atmosphere: composition and chemistry
DE: 3332 Mesospheric dynamics
DE: 3389 Tides and planetary waves
SC: SPA-Aeronomy [SA]
MN: Fall Meeting 2005