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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union

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© Author(s) 2017. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
27 Apr 2017
Review status
This discussion paper is under review for the journal Atmospheric Measurement Techniques (AMT).
A Cloud-Ozone Data Product from Aura OMI and MLS Satellite Measurements
Jerald R. Ziemke1,2, Sarah A. Strode2,3, Anne R. Douglass2, Joanna Joiner2, Alexander Vasilkov2,4, Luke D. Oman2, Junhua Liu2,3, Susan E. Strahan2,3, Pawan K. Bhartia2, and David P. Haffner2,4 1Morgan State Unive rsity, Baltimore, Maryland, USA
2NASA Goddard Space Flight Center, Greenbelt, Maryland, USA
3Universities Space Research Association, Columbia, MD, USA
4SSAI, Lanham, Maryland, USA
Abstract. Ozone within deep convective clouds is controlled by several factors involving photochemical reactions and transport. Gas-phase photochemical reactions, and heterogeneous surface chemical reactions involving ice, water particles, and aerosols inside the clouds all contribute to the distribution and net production and loss of ozone. Ozone in clouds is also dependent on convective transport that carries low troposphere/boundary layer ozone and ozone precursors upward into the clouds. Characterizing ozone in thick clouds is an important step for quantifying relationships of ozone with tropospheric H2O, OH production, and cloud microphysics/transport properties. Although measuring ozone in deep convective clouds from either aircraft or balloon ozonesondes is largely impossible due to extreme meteorological conditions associated with these clouds, it is possible to estimate ozone in thick clouds using backscattered solar UV radiation measured by satellite instruments. Our study combines Aura Ozone Monitoring Instrument (OMI) and Microwave Limb Sounder (MLS) satellite measurements to generate a new research product, monthly-mean ozone concentrations in deep convective clouds between 30° S to 30° N for October 2004–April 2016. These measurements reveal key features of cloud ozone including: persistent low ozone concentrations in the tropical Pacific of ~ 10 ppbv or less; concentrations of up to 60 pphv or greater over landmass regions of South America, southern Africa, Australia, and India/east Asia; connections with tropical ENSO events; and intra-seasonal/Madden-Julian Oscillation variability. Analysis of OMI aerosol measurements suggests a cause and effect relation between boundary layer pollution and elevated ozone inside thick clouds over land-mass regions including southern Africa and India/east Asia.

Citation: Ziemke, J. R., Strode, S. A., Douglass, A. R., Joiner, J., Vasilkov, A., Oman, L. D., Liu, J., Strahan, S. E., Bhartia, P. K., and Haffner, D. P.: A Cloud-Ozone Data Product from Aura OMI and MLS Satellite Measurements, Atmos. Meas. Tech. Discuss., doi:10.5194/amt-2017-107, in review, 2017.
Jerald R. Ziemke et al.
Jerald R. Ziemke et al.
Jerald R. Ziemke et al.


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