Atmos. Chem. Phys. Discuss., 12, 3169-3211, 2012
www.atmos-chem-phys-discuss.net/12/3169/2012/
doi:10.5194/acpd-12-3169-2012
© Author(s) 2012. This work is distributed
under the Creative Commons Attribution 3.0 License.
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This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
Development of a climate record of tropospheric and stratospheric ozone from satellite remote sensing: evidence of an early recovery of global stratospheric ozone
J. R. Ziemke1,2 and S. Chandra3
1Goddard Earth and Sciences Technology and Research, Morgan State University, Baltimore, Maryland, USA
2NASA Goddard Space Flight Center, Greenbelt, Maryland, USA
3Goddard Earth Sciences and Technology, University of Maryland Baltimore County, Baltimore, Maryland, USA

Abstract. Ozone data beginning October 2004 from the Aura Ozone Monitoring Instrument (OMI) and Aura Microwave Limb Sounder (MLS) are used to evaluate the accuracy of the Cloud Slicing technique in effort to develop long data records of tropospheric and stratospheric ozone and for studying their long-term changes. Using this technique, we have produced a 32-yr (1979–2010) long record of tropospheric and stratospheric ozone from the combined Total Ozone Mapping Spectrometer (TOMS) and OMI. The analyses of these time series suggest that the quasi-biennial oscillation (QBO) is the dominant source of inter-annual variability of stratospheric ozone and is clearest in the Southern Hemisphere during the Aura time record with related inter-annual changes of 30–40 Dobson Units. Tropospheric ozone also indicates a QBO signal in the tropics with peak-to-peak changes varying from 2 to 7 DU. The stratospheric ozone record indicates a steady increase since the mid-1990's with current ozone levels comparable to the mid-1980's. This is earlier than predicted by many of the current climate models which suggest recovery to the mid-1980's levels by year 2020 or later.

Citation: Ziemke, J. R. and Chandra, S.: Development of a climate record of tropospheric and stratospheric ozone from satellite remote sensing: evidence of an early recovery of global stratospheric ozone, Atmos. Chem. Phys. Discuss., 12, 3169-3211, doi:10.5194/acpd-12-3169-2012, 2012.
 
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