First Reprocessing of Southern Hemisphere Additional Ozonesondes (SHADOZ) Ozone Profiles (1998-2016): 2. Comparisons With Satellites and Ground-Based Instruments - Archive ouverte HAL Access content directly
Journal Articles Journal of Geophysical Research: Atmospheres Year : 2017

First Reprocessing of Southern Hemisphere Additional Ozonesondes (SHADOZ) Ozone Profiles (1998-2016): 2. Comparisons With Satellites and Ground-Based Instruments

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Anne M. Thompson
  • Function : Author
Jacquelyn C. Witte
  • Function : Author
Chance Sterling
  • Function : Author
Allen Jordan
  • Function : Author
Bryan J. Johnson
  • Function : Author
Samuel J. Oltmans
  • Function : Author
Masatomo Fujiwara
  • Function : Author
Holger Vömel
  • Function : Author
Marc Allaart
  • Function : Author
Ankie Piters
  • Function : Author
Gert J. R. Coetzee
  • Function : Author
Ernesto Corrales
  • Function : Author
Jorge Andres Diaz
  • Function : Author
Christian Félix
  • Function : Author
Ninong Komala
  • Function : Author
Nga Lai
  • Function : Author
H. T. Ahn Nguyen
  • Function : Author
Matakite Maata
  • Function : Author
Francis Mani
  • Function : Author
Zamuna Zainal
  • Function : Author
Shin-Ya Ogino
  • Function : Author
Francisco Paredes
  • Function : Author
Tercio Luiz Bezerra Penha
  • Function : Author
Francisco Raimundo da Silva
  • Function : Author
Sukarni Sallons-Mitro
  • Function : Author
Henry B. Selkirk
  • Function : Author
F. J. Schmidlin
  • Function : Author
Rene Stübi
  • Function : Author
Kennedy Thiongo
  • Function : Author

Abstract

The Southern Hemisphere ADditional OZonesonde (SHADOZ) network was assembled to validate a new generation of ozone-monitoring satellites and to better characterize the vertical structure of tropical ozone in the troposphere and stratosphere. Beginning with nine stations in 1998, more than 7,000 ozone and P-T-U profiles are available from 14 SHADOZ sites that have operated continuously for at least a decade. We analyze ozone profiles from the recently reprocessed SHADOZ data set that is based on adjustments for inconsistencies caused by varying ozonesonde instruments and operating techniques. First, sonde-derived total ozone column amounts are compared to the overpasses from the Earth Probe/Total Ozone Mapping Spectrometer, Ozone Monitoring Instrument, and Ozone Mapping and Profiler Suite satellites that cover 1998-2016. Second, characteristics of the stratospheric and tropospheric columns are examined along with ozone structure in the tropical tropopause layer (TTL). We find that (1) relative to our earlier evaluations of SHADOZ data, in 2003, 2007, and 2012, sonde-satellite total ozone column offsets at 12 stations are 2% or less, a significant improvement; (2) as in prior studies, the 10 tropical SHADOZ stations, defined as within ±19° latitude, display statistically uniform stratospheric column ozone, 229 ± 3.9 DU (Dobson units), and a tropospheric zonal wave-one pattern with a 14 DU mean amplitude; (3) the TTL ozone column, which is also zonally uniform, masks complex vertical structure, and this argues against using satellites for lower stratospheric ozone trends; and (4) reprocessing has led to more uniform stratospheric column amounts across sites and reduced bias in stratospheric profiles. As a consequence, the uncertainty in total column ozone now averages 5%.
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insu-03665049 , version 1 (11-05-2022)

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Anne M. Thompson, Jacquelyn C. Witte, Chance Sterling, Allen Jordan, Bryan J. Johnson, et al.. First Reprocessing of Southern Hemisphere Additional Ozonesondes (SHADOZ) Ozone Profiles (1998-2016): 2. Comparisons With Satellites and Ground-Based Instruments. Journal of Geophysical Research: Atmospheres, 2017, 122, pp.13,000-13,025. ⟨10.1002/2017JD027406⟩. ⟨insu-03665049⟩
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