A23F-01 INVITED 13:45h

THE EOS AURA TROPOSPHERIC EMISSION SPECTROMETER (TES)

* Beer, R (Reinhard.Beer@jpl.nasa.gov) , Jet Propulsion Laboratory, M/S 183-601 4800 Oak Grove Drive, Pasadena, CA 91109

The Tropospheric Emission Spectrometer (TES) is a high-resolution infrared Fourier Transform spectrometer that operates in both limb and nadir viewing modes for the investigation of the physics and chemistry of the Earth's lower atmosphere. TES was launched into Sun-synchronous polar orbit on July 15 2004 from Vandenberg AFB in California. The talk will focus on early mission atmospheric results and intercomparisons with Aqua AIRS and ozonesondes.

http://tes.jpl.nasa.gov

A23F-02 INVITED 14:05h

The EOS Aura Microwave Limb Sounder (EOS MLS)

* Waters, J W (joe@mls.jpl.nasa.gov) , Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA 91109 United States
Froidevaux, L , Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA 91109 United States
Jarnot, R F , Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA 91109 United States
Read, W G , Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA 91109 United States
Pickett, H M , Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA 91109 United States
Harwood, R S , University of Edinburgh, Mayfield Road, Edinburgh, EH93JZ United Kingdom
Cofield, R E , Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA 91109 United States
Filipiak, M J , University of Edinburgh, Mayfield Road, Edinburgh, EH93JZ United Kingdom
Flower, D A , Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA 91109 United States
Livesey, N J , Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA 91109 United States
Manney, G L , Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA 91109 United States
Manney, G L , New Mexico Highlands University, Dept of Natural Resources Mgmnt, Las Vegas, NM 87701 United States
Pumphrey, H C , University of Edinburgh, Mayfield Road, Edinburgh, EH93JZ United Kingdom
Santee, M L , Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA 91109 United States
Siegel, P H , Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA 91109 United States
Wu, D L , Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA 91109 United States
Schwartz, M J , Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA 91109 United States
Stek, P C , Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA 91109 United States
Jiang, J H , Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA 91109 United States
Jiang, Y , Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA 91109 United States
Cuddy, D T , Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA 91109 United States

EOS MLS, on NASA's Aura satellite launched 15 July 2004, remotely senses Earth's upper troposphere, stratosphere and mesosphere by measuring millimeter and submillimeter wavelength thermal emission from the atmospheric limb. It is a follow-on to the Upper Atmosphere Research Satellite (UARS) MLS launched in 1991. The measurement suite for which EOS MLS was designed includes OH, HO2, H2O, O3, HCl, ClO, HOCl, BrO, N2O, HNO3, CO, HCN, temperature and cloud ice. Early results have demonstrated these measurements over an initial altitude range. This talk will give an overview of EOS MLS and some early results from it.

A23F-03 14:25h

An Early Assessment of Data Quality From the Aura Satellite's Microwave Limb Sounder Experiment: Ozone and Hydrogen Chloride

* Froidevaux, L (lucien@mls.jpl.nasa.gov) , Jet Propulsion Laboratory/Calif. Institute of Technology, Mail Stop 183-701, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
Drouin, B J (bjd@spec.jpl.nasa.gov) , Jet Propulsion Laboratory/Calif. Institute of Technology, Mail Stop 183-701, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
Filipiak, M J (mjf@met.ed.ac.uk) , School of Geosciences, The University of Edinburgh, The King's Buildings, Mayfield Road, Edinburgh, EH9 3JZ United Kingdom
Jiang, Y B (ybj@mls.jpl.nasa.gov) , Jet Propulsion Laboratory/Calif. Institute of Technology, Mail Stop 183-701, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
Livesey, N J (livesey@mls.jpl.nasa.gov) , Jet Propulsion Laboratory/Calif. Institute of Technology, Mail Stop 183-701, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
Pickett, H M (hmp@spec.jpl.nasa.gov) , Jet Propulsion Laboratory/Calif. Institute of Technology, Mail Stop 183-701, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
Pumphrey, H C (hcp@met.ed.ac.uk) , School of Geosciences, The University of Edinburgh, The King's Buildings, Mayfield Road, Edinburgh, EH9 3JZ United Kingdom
Read, W G (bill@mls.jpl.nasa.gov) , Jet Propulsion Laboratory/Calif. Institute of Technology, Mail Stop 183-701, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
Waters, J W (joe@mls.jpl.nasa.gov) , Jet Propulsion Laboratory/Calif. Institute of Technology, Mail Stop 183-701, 4800 Oak Grove Drive, Pasadena, CA 91109 United States

We present an early assessment of data quality from the Microwave Limb Sounder (MLS) onboard the Earth Observing System Aura satellite. We focus on measurements of ozone from several frequency bands (from about 200 GHz to 2.5 THz) and hydrogen chloride near 626 GHz. We discuss expected uncertainties and simulation results, as well as some early comparisons with other datasets. We present our view of current strengths and limitations for these data products, along with a look towards future validation studies and data production.

A23F-04 14:40h

A New View of Polar Processing: First Results From the Microwave Limb Sounder on Aura

* Santee, M L (mls@mls.jpl.nasa.gov) , Jet Propulsion Laboratory, California Institute of Technology, Mail Stop 183-701, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
Waters, J W , Jet Propulsion Laboratory, California Institute of Technology, Mail Stop 183-701, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
Manney, G L , Jet Propulsion Laboratory, California Institute of Technology, Mail Stop 183-701, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
Manney, G L , Department of Natural Sciences, New Mexico Highlands University, Ivan Hilton Science Center, Las Vegas, NM 87701 United States
Froidevaux, L , Jet Propulsion Laboratory, California Institute of Technology, Mail Stop 183-701, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
Livesey, N J , Jet Propulsion Laboratory, California Institute of Technology, Mail Stop 183-701, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
Read, W G , Jet Propulsion Laboratory, California Institute of Technology, Mail Stop 183-701, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
Pumphrey, H C , Institute for Meteorology, University of Edinburgh, James Clerk Maxwell Building, Mayfield Road, Edinburgh, EH9 3JZ United Kingdom
Schwartz, M J , Jet Propulsion Laboratory, California Institute of Technology, Mail Stop 183-701, 4800 Oak Grove Drive, Pasadena, CA 91109 United States

A second-generation Microwave Limb Sounder (MLS) was launched as part of NASA's Earth Observing System (EOS) Aura mission in July 2004. EOS MLS measures several more stratospheric species than did its predecessor on the Upper Atmosphere Research Satellite (UARS). Simultaneous measurements of temperature, N$_2$O, HNO$_3$, H$_2$O, HCl, ClO, and O$_3$ provide a much more complete picture of polar processing and chemical ozone destruction in the stratosphere than has previously been possible. EOS MLS measurements of these species will be used to track the evolution of chlorine deactivation, denitrification, dehydration, and ozone loss through the 2004 Antarctic late winter and spring period.

A23F-05 14:55h

A First View of Polar Vortex Evolution and Breakup From the Microwave Limb Sounder on Aura

* Manney, G L (manney@mls.jpl.nasa.gov) , Jet Propulsion Laboratory, MS 183-701 4800 Oak Grove Dr., Pasadena, CA 91109
* Manney, G L (manney@mls.jpl.nasa.gov) , New Mexico Highlands University, Department of Natural Sciences, Las Vegas, NM 87701
Santee, M L (mls@mls.jpl.nasa.gov) , Jet Propulsion Laboratory, MS 183-701 4800 Oak Grove Dr., Pasadena, CA 91109
Livesey, N J (livesey@mls.jpl.nasa.gov) , Jet Propulsion Laboratory, MS 183-701 4800 Oak Grove Dr., Pasadena, CA 91109
Filipiak, M J (mjf@met.ed.ac.uk) , University of Edinburgh, Department of Meteorology, Edinburgh, EH9 3JZ United Kingdom
Froidevaux, L (lucien@mls.jpl.nasa.gov) , Jet Propulsion Laboratory, MS 183-701 4800 Oak Grove Dr., Pasadena, CA 91109
Harwood, R S (r.harwood@ed.ac.uk) , University of Edinburgh, Department of Meteorology, Edinburgh, EH9 3JZ United Kingdom
Pumphrey, H C (hcp@met.ed.ac.uk) , University of Edinburgh, Department of Meteorology, Edinburgh, EH9 3JZ United Kingdom
Read, W G (bill@mls.jpl.nasa.gov) , Jet Propulsion Laboratory, MS 183-701 4800 Oak Grove Dr., Pasadena, CA 91109
Waters, J W (joe@mls.jpl.nasa.gov) , Jet Propulsion Laboratory, MS 183-701 4800 Oak Grove Dr., Pasadena, CA 91109
Pawson, S (pawson@gmao.gsfc.nasa.gov) , NASA/Goddard Space Flight Center, Global Modeling and Assimilation Office, Code 900.3, Greenbelt, MD 20771

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.

A23F-06 15:10h

New Measurements of Stratospheric HOx from Aura MLS and Balloon

* Pickett, H M (Herbert.M.Pickett@jpl.nasa.gov) , Jet Propulsion Lab, Caltech, Mail Stop 183-701, Pasadena, CA 91109

The Aura MLS instrument measures OH near 2512 GHz and HO$_2$ near 660 GHz. The OH bands have sensitivity to obtain daily maps for 30-80 km. The HO$_2$ band has sensitivity to obtain monthly zonal means for 30 - 75 km. Since launch, the MLS OH and HO$_2$ bands have been performing to predicted sensitivity levels. Data will be presented concerning the HOx dilemma in the upper stratosphere and mesosphere. Additionally, a balloon precursor to the MLS OH instrument has had three scientific flights over the last four years. In September 2003, the balloon instrument flew from noon until 2 AM the next morning and showed a very slow decay of OH above 45 km. The MLS OH and HO$_2$ bands can also probe this long-lived HOx from measurements on the dark side of the orbit. These observations of night-time HOx put further constraints on the chemistry.

http://mls.jpl.nasa.gov

A23F-07 15:25h

Observations of Bromine Monoxide from the Microwave Limb Sounder on Aura

* Livesey, N J (livesey@mls.jpl.nasa.gov) , Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91020 United States
Read, W G (bill@mls.jpl.nasa.gov) , Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91020 United States
Waters, J W (joe@mls.jpl.nasa.gov) , Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91020 United States
Jarnot, R F (jarnot@mls.jpl.nasa.gov) , Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91020 United States

We present the first observations of stratospheric Bromine Monoxide (BrO) from the Microwave Limb Sounder (MLS) instrument on the Aura spacecraft, launched on 15th July 2004. Bromine plays a significant role in stratospheric ozone chemistry and BrO is the dominant form of bromine in the daytime stratosphere. The significance of bromine is set to increase as stratospheric chlorine levels reduce following legislated reductions in emissions of chlorine source gasses. An overview is given of the MLS BrO observations. Initial results, such as monthly zonal means, are shown from the first few months of MLS observations. Comparisons with previous datasets and models are discussed.

Author(s) (2004), Title, Eos Trans. AGU, 85(47), Fall Meet. Suppl., Abstract #####-##.