HR: 0830h
AN: A21D-0999    [PDF]
TI: Accuracy and Precision in the 1998-2000 Southern Hemisphere Additional Ozonesondes (SHADOZ) Dataset in Light of the JOSIE-2000 Results
AU: Witte, J C
EM: witte@gavial.gsfc.nasa.gov
AF: Science Systems and Applications Inc., NASA/GSFC/Code 916, Greenbelt, MD 20771 United States
AU: Thompson, A M
AF: NASA/Goddard Space Flight Center, Mail Code 916, Greenbelt, MD 20771
AU: Schmidlin, F J
AF: NASA/Wallops Flight Facility, Mail Code 972, Wallops Is., VA 23337 United States
AU: Oltmans, S J
AF: NOAA/Climate Monitoring and Diagnostics Laboratory, 325 Broadway, Boulder, CO 80305 United States
AU: * McPeters, R D
AF: NASA/Goddard Space Flight Center, Mail Code 916, Greenbelt, MD 20771
AU: Smit, H
AF: Juelich Research Centre/Institute for Chemistry of the Polluted Atmosphere, P.O. Box 1913, Juelich, D-52425 Germany
AB: A network of 12 southern hemisphere tropical and subtropical stations in the Southern Hemisphere ADditional OZonesondes (SHADOZ) project has provided over 2000 profiles of stratospheric and tropospheric ozone since 1998. Balloon-borne electrochemical concentration cell (ECC) ozonesondes are used with standard radiosondes for pressure, temperature and relative humidity measurements. The archived data are available at: http://croc.gsfc.nasa.gov/shadoz. In Thompson et al., [JGR, 108, D2: 8238, 2003] accuracies and imprecisions in the SHADOZ 1998-2000 dataset were examined using ground-based instruments and the TOMS total ozone measurement (version 7) as references. Small variations in ozonesonde technique introduced possible biases from station-to-station. SHADOZ total ozone column amounts are now compared to version 8 TOMS; discrepancies between the two datasets are reduced 2% on average. An evaluation of ozone variations among the stations is made using the results of a series of chamber simulations of ozone launches (JOSIE-2000, Juelich Ozonesonde Intercomparison Experiment) in which a standard reference ozone instrument was employed with the various sonde techniques used in SHADOZ. A number of variations in SHADOZ ozone data are explained when differences in solution strength, data processing and instrument type (manufacturer) are taken into account.
DE: 0394 Instruments and techniques
DE: 1640 Remote sensing
DE: 3309 Climatology (1620)
DE: 3394 Instruments and techniques
DE: 9325 Atlantic Ocean
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting