HR: 1340h
AN: A43D-1576 [Abstracts]
TI: Identification of stratospheric waves in ozone in the tropics from OMI high spectral resolution measurements
AU: Ziemke, J R
EM: ziemke@jwocky.gsfc.nasa.gov
AF: University of Maryland Baltimore County (UMBC) Goddard Earth Sciences and
Technology (GEST), 5523 Research Park Drive, Suite 320, Baltimore, MD 21228, United States
AU: Ziemke, J R
EM: ziemke@jwocky.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, Code 613.3, Greenbelt, MD 20771, United States
AU: * Liu, X
EM: xliu@cfa.harvard.edu
AF: University of Maryland Baltimore County (UMBC) Goddard Earth Sciences and
Technology (GEST), 5523 Research Park Drive, Suite 320, Baltimore, MD 21228, United States
AU: * Liu, X
EM: xliu@cfa.harvard.edu
AF: NASA Goddard Space Flight Center, Code 613.3, Greenbelt, MD 20771, United States
AU: Bhartia, P K
EM: bhartia@mhatter.gsfc.nasa.gov
AF: NASA Goddard Space Flight Center, Code 613.3, Greenbelt, MD 20771, United States
AB:
Previous studies using Total Ozone Mapping Spectrometer (TOMS) measurements have identified several types
of tropical waves in the stratosphere. These waves include Kelvin waves, mixed Rossby-gravity waves, equatorial
Rossby waves, and global normal modes. All of these detected waves occur when their zonal phase speeds are
opposite the zonal winds in the low-mid stratosphere associated with the Quasi-biennial Oscillation (QBO).
Peak-to-peak amplitudes in all cases are typically ~5 DU. While total ozone data from TOMS is sensitive in
detecting these tropical waves, they provide each day only a single horizontal cross-sectional map. The high
spatial and spectral resolution of the Aura Ozone Monitoring Instrument (OMI) provides a unique means to
evaluate 3D structure in these waves including their propagation characteristics. Ozone profiles retrieved from
OMI radiances for wavelengths 270-310 nm are utilized to examine the nature of these wave disturbances
extending from the lower to upper stratosphere.
DE: 0340 Middle atmosphere: composition and chemistry
DE: 0341 Middle atmosphere: constituent transport and chemistry (3334)
DE: 3334 Middle atmosphere dynamics (0341, 0342)
DE: 3374 Tropical meteorology
DE: 3394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting