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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
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Volume 11, issue 10 | Copyright
Atmos. Meas. Tech., 11, 5587-5605, 2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 12 Oct 2018

Research article | 12 Oct 2018

Retrievals of tropospheric ozone profiles from the synergism of AIRS and OMI: methodology and validation

Dejian Fu1, Susan S. Kulawik2, Kazuyuki Miyazaki3, Kevin W. Bowman1, John R. Worden1, Annmarie Eldering1, Nathaniel J. Livesey1, Joao Teixeira1, Fredrick W. Irion1, Robert L. Herman1, Gregory B. Osterman1, Xiong Liu4, Pieternel F. Levelt5,6, Anne M. Thompson7, and Ming Luo1 Dejian Fu et al.
  • 1NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
  • 2Bay Area Environmental Research Institute/NASA Ames Research Center, Mountain View, California, USA
  • 3Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan
  • 4Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts, USA
  • 5Royal Netherlands Meteorological Institute, De Bilt, 3731 GA, the Netherlands
  • 6Faculty of Civil Engineering and Geosciences, University of Technology Delft, Delft, 2628 CN, the Netherlands
  • 7NASA Goddard Space Flight Center, Greenbelt, Maryland, USA

Abstract. The Tropospheric Emission Spectrometer (TES) on the A-Train Aura satellite was designed to profile tropospheric ozone and its precursors, taking measurements from 2004 to 2018. Starting in 2008, TES global sampling of tropospheric ozone was gradually reduced in latitude, with global coverage stopping in 2011. To extend the record of TES, this work presents a multispectral approach that will provide O3 data products with vertical resolution and measurement error similar to TES by combining the single-footprint thermal infrared (TIR) hyperspectral radiances from the Aqua Atmospheric Infrared Sounder (AIRS) instrument and the ultraviolet (UV) channels from the Aura Ozone Monitoring Instrument (OMI). The joint AIRS+OMI O3 retrievals are processed through the MUlti-SpEctra, MUlti-SpEcies, MUlti-SEnsors (MUSES) retrieval algorithm. Comparisons of collocated joint AIRS+OMI and TES to ozonesonde measurements show that both systems have similar errors, with mean and standard deviation of the differences well within the estimated measurement error. AIRS+OMI and TES have slightly different biases (within 5 parts per billion) vs. the sondes. Both AIRS and OMI have wide swath widths ( ∼ 1650km for AIRS;  ∼ 2600km for OMI) across satellite ground tracks. Consequently, the joint AIRS+OMI measurements have the potential to maintain TES vertical sensitivity while increasing coverage by 2 orders of magnitude, thus providing an unprecedented new data set with which to quantify the evolution of tropospheric ozone.

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