HR: 1340h
AN: A33A-0144    [Abstracts]
TI: Initial Results of Gravity Wave Observations from Aura MLS
AU: * Wu, D L
EM: dwu@mls.jpl.nasa.gov
AU: Eckermann, S D
EM: eckerman@uap2.nrl.navy.mil
AU: Jiang, J H
EM: jonathan@mls.jpl.nasa.gov
AU: Waters, J W
EM: joe@mls.jpl.nasa.gov
AB: Microwave radiances can be used to measure the atmospheric temperature perturbations induced by gravity waves (GWs). Initial results from Aura MLS (Microwave Limb Sounder) show that the 118-GHz radiances have good sensitivity to GW-scale perturbations in the stratosphere and lower mesosphere. The zonal mean morphology of GW variance observed by Aura MLS is consistent with those previously reported with UARS (Upper Atmosphere Research Satellite) MLS. Different from UARS MLS, Aura MLS scans in the forward direction within the orbital plane. Because the satellite is on a polar orbit, Aura MLS is mainly sensitive to wave components propagating in the meridional direction, and quantitative estimates of southward/northward propagating waves can be obtained from separate ascending and descending measurements. In this paper we will also study MLS visibility function for temperature perturbations at various vertical and horizontal scales.
DE: 0341 Middle atmosphere--constituent transport and chemistry (3334)
DE: 0350 Pressure, density, and temperature
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting