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Interannual Variability of Ozone in the Polar Vortex during the Fall SeasonPrevious analysis has shown that the distribution of O3 at high northern latitudes in the lower-to-middle stratosphere at the beginning of the winter season has a characteristic distribution, which is consistent between in situ and satellite measurements. Initial O3 profiles in the vortex are similar to each other and are quite different from outside the vortex at the same latitude and also from a zonal mean climatology. In the vortex, O3 is nearly constant from 500 to above 800 K with a value near 3 ppmv. Values outside the vortex are up to a factor of 2 higher and increase significantly with potential temperature. Model analysis indicates that the characteristic vortex O3 profiles arise from a combination of seasonally accelerated photochemical loss at high latitudes and minimal transport of air from lower latitudes. Analysis of the relatively high-resolution POAM data shows that these characteristic O3 distributions are consistent from year to year and between the hemispheres. Here we emphasize analysis of the 24-year time series of O3 data from SBUV in the lower-to-middle stratosphere at high latitudes in the fall vortex. We find that the variability of O3 from SBUV is relatively small in this regime and no significant trend is detectable. The implications of the findings for stratospheric O3 chemistry and transport will be explored.
Document ID
20030054361
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Bhartia, P. K.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kawa, S. R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Newman, P. A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Schoeberl, M. R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Stolarski, R. S.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Bevilacqua, R.
(Naval Research Lab. Washington, DC, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2002
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: AMS 12th Conference on Middle Atmosphere
Location: San Antonio, TX
Country: United States
Start Date: November 4, 2002
End Date: November 8, 2002
Sponsors: American Meteorological Society
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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