Global Distribution of Tropospheric Ozone from GOME and Comparison with GEOS-CHEM Model Results

  • Chance K
  • Liu X
  • Sioris C
  • et al.
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Abstract

We present the first directly retrieved global distribution of tropospheric column ozone from satellite-based measurements. Tropospheric ozone is derived from backscattered radiance spectra in the ultraviolet measured by GOME. We validate the retrievals globally with ozonesonde observations at 33 ozonesonde stations. The retrieved tropospheric ozone well captures the temporal variability of ozonesonde observations and the biases are generally within 5 DU. The global distribution of tropospheric ozone reveals previously unrecognized features, such as bands of high ozone (e.g., 40-50 DU) at mid-latitudes during the spring and summer, and clearly shows signals due to biomass burning, air pollution, stratosphere-troposphere exchange, transport, and convection. We compare the retrievals with the global tropospheric chemistry model GEOS-CHEM; the overall structures are similar, but significant differences exist. We investigate the new ozone features with GEOS-CHEM model and other models and measurements.

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APA

Chance, K., Liu, X., Sioris, C. E., Spurr, R. J., Kurosu, T. P., Martin, R. V., … Bhartia, P. K. (2005). Global Distribution of Tropospheric Ozone from GOME and Comparison with GEOS-CHEM Model Results. AGU Spring Meeting Abstracts, 21, 13. Retrieved from http://adsabs.harvard.edu/abs/2005AGUSM.A21A..13C

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