HR: 14:55h
AN: A23F-05    [Abstracts]
TI: A First View of Polar Vortex Evolution and Breakup From the Microwave Limb Sounder on Aura
AU: * Manney, G L
EM: manney@mls.jpl.nasa.gov
AF: Jet Propulsion Laboratory, MS 183-701 4800 Oak Grove Dr., Pasadena, CA 91109
AU: * Manney, G L
EM: manney@mls.jpl.nasa.gov
AF: New Mexico Highlands University, Department of Natural Sciences, Las Vegas, NM 87701
AU: Santee, M L
EM: mls@mls.jpl.nasa.gov
AF: Jet Propulsion Laboratory, MS 183-701 4800 Oak Grove Dr., Pasadena, CA 91109
AU: Livesey, N J
EM: livesey@mls.jpl.nasa.gov
AF: Jet Propulsion Laboratory, MS 183-701 4800 Oak Grove Dr., Pasadena, CA 91109
AU: Filipiak, M J
EM: mjf@met.ed.ac.uk
AF: University of Edinburgh, Department of Meteorology, Edinburgh, EH9 3JZ United Kingdom
AU: Froidevaux, L
EM: lucien@mls.jpl.nasa.gov
AF: Jet Propulsion Laboratory, MS 183-701 4800 Oak Grove Dr., Pasadena, CA 91109
AU: Harwood, R S
EM: r.harwood@ed.ac.uk
AF: University of Edinburgh, Department of Meteorology, Edinburgh, EH9 3JZ United Kingdom
AU: Pumphrey, H C
EM: hcp@met.ed.ac.uk
AF: University of Edinburgh, Department of Meteorology, Edinburgh, EH9 3JZ United Kingdom
AU: Read, W G
EM: bill@mls.jpl.nasa.gov
AF: Jet Propulsion Laboratory, MS 183-701 4800 Oak Grove Dr., Pasadena, CA 91109
AU: Waters, J W
EM: joe@mls.jpl.nasa.gov
AF: Jet Propulsion Laboratory, MS 183-701 4800 Oak Grove Dr., Pasadena, CA 91109
AU: Pawson, S
EM: pawson@gmao.gsfc.nasa.gov
AF: NASA/Goddard Space Flight Center, Global Modeling and Assimilation Office, Code 900.3, Greenbelt, MD 20771
AB: The Microwave Limb Sounder (MLS) onboard the Earth Observing System Aura satellite has greatly expanded capabilitites over its predecesser on the Upper Atmosphere Research Satellite. In particular, continuous coverage of the polar regions and measurements of additional species will enhance detailed studies of transport related to polar vortex evolution. Examination of the MLS constituents in conjunction with meteorological fields and transport calculations facilitates quantitative analysis of physical and chemical processes. Meteorological analyses from the Goddard Earth Observing System, Version 4 (GEOS-4) at NASA's Global Modeling and Assimilation Office are used to set the context for MLS observations and to drive high-resolution trajectory calculations. We will use the first several months of Aura MLS data, along with GEOS-4 analyses and trajectories, to study the three-dimensional evolution of the Antarctic polar vortex during the 2004 late winter and spring breakup. Of particular interest are: the evolution of the upper stratospheric vortex as seen in MLS CO and H2O observations; the dispersal of chemically processed air from the lower stratospheric vortex as seen using MLS N2O, H2O, HNO3, and O3 observations; and the evolution of the sub-vortex in the lowermost stratosphere as seen using MLS H2O observations.
DE: 3334 Middle atmosphere dynamics (0341, 0342)
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0341 Middle atmosphere--constituent transport and chemistry (3334)
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting