HR: 16:45h
AN: A54A-06    [Abstracts]
TI: Interannual Variability of Stratospheric and Tropospheric Ozone Determined from Satellite Measurements
AU: * Fishman, J
EM: jack.fishman@nasa.gov
AF: NASA Langley Research Center, Mail Stop 401A, Hampton, VA 23681
AU: Creilson, J K
EM: j.k.creilson@larc.nasa.gov
AF: NASA Langley Research Center, Mail Stop 401A, Hampton, VA 23681
AU: Creilson, J K
EM: j.k.creilson@larc.nasa.gov
AF: SAIC, #1 Enterprise Parkway, Hampton, VA 23666
AU: Wozniak, A E
EM: a.e.wozniak@larc.nasa.gov
AF: NASA Langley Research Center, Mail Stop 401A, Hampton, VA 23681
AU: Wozniak, A E
EM: a.e.wozniak@larc.nasa.gov
AF: SAIC, #1 Enterprise Parkway, Hampton, VA 23666
AB: Long-term satellite records have been used in previous studies to examine both trends and interannual variability (IAV) of ozone in the stratosphere. In this study, we use satellite measurements to produce long-term records of both tropospheric and stratospheric ozone and we examine the IAV of these datasets. The long-term data record of tropospheric ozone residual (TOR) distributions [http://asd-www.larc.nasa.gov/TOR/data.html] has used concurrent measurements from the Total Ozone Mapping Spectrometer (TOMS) and Solar Backscattered Ultraviolet (SBUV) instruments to develop a quasi-global tropospheric ozone climatology. This climatology shows significant regional enhancements of ozone pollution resulting from the release of copious emissions from regionally industrialized areas in the Northern Hemisphere (east Asia, eastern U.S., northern India, western Africa) and widespread biomass burning in the Tropics. Because of the unique length and data density of this tropospheric trace gas data base, it is possible, for the first time, to examine the IAV of the TOR and to see if this IAV can be correlated with other well-known IAV parameters such as the quasi-biennial oscillation (QBO) and the El Ni¤o/Southern Oscillation (ENSO). In addition, we can examine a complimentary integrated dataset that is also derived from the TOR methodology. The stratospheric column ozone (SCO) is the integrated amount of ozone above the tropopause and its climatological distribution is in excellent agreement with a comparable quantity derived from Stratospheric Aerosol and Gas Experiment (SAGE) profiles as well as with observations from ground-based and ozonesonde measurements. We can show that the IAV of SCO is consistent with earlier studies that have examined the relationship between TOMS total ozone and the QBO on relatively large spatial scales, which leads to an important confirmation of the use of TOR methodology to investigate IAV behavior. Whereas the QBO is observed on a large spatial scale in the stratosphere, we find that some of the regions where significant air pollution is found display IAV that is highly correlated with ENSO at certain times of the year.
DE: 0340 Middle atmosphere--composition and chemistry
DE: 0345 Pollution--urban and regional (0305)
DE: 0365 Troposphere--composition and chemistry
SC: Atmospheric Sciences [A]
MN: 2005 Joint Assembly