Enhanced view of the "tropical Atlantic ozone paradox" and "zonal wave one" from the in situ MOZAIC and SHADOZ data

B. Sauvage, V. Thouret, Anne Mee Thompson, J. C. Witte, J. P. Cammas, P. Nédéléc, G. Athier

Research output: Contribution to journalArticle

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Abstract

Ozone vertical profiles from the Measurements of Ozone from Airbus In-service Aircraft (MOZAIC) program over Africa are used to complement pictures of the wave-one pattern and the "tropical Atlantic paradox" identified through soundings in the Southern Hemisphere Additional Ozonesondes (SHADOZ) network. The Atlantic paradox refers to a greater tropospheric ozone column amount over the South Atlantic than the North Atlantic during the West African biomass burning season. SHADOZ and MOZAIC data from 1998-2002 and 1997-2004, respectively, are used to show that these two phenomena are linked. The combined data are used to address the following: Does the (continental) MOZAIC data modify the appearance of the paradox? Do lower tropospheric MOZAIC data lead to new conclusions about ozone in the wave-one maximum region? During December, January, and February (DJF), the lower troposphere over Africa exhibits a higher ozone signal in the burning hemisphere, that is, north of the equator, so the "paradox" does not appear over the African continent. The MOZAIC data set over Africa highlights another component of the wave-one feature when the tropospheric ozone mixing ratio is viewed in zonal cross section. The lower troposphere makes a nonnegligible contribution to the regionally higher ozone column during the biomass burning periods of each hemisphere (DJF) for West Africa and June, July, and August (JJA) for the central Africa region. A southern preference for the wave-one character, previously deduced from satellite data, is confirmed with a stronger maximum in September, October, and November (SON). Both the paradox and wave-one phenomena are consistent with a view that the African continent is a major source of biomass burning and lightning emissions.

Original languageEnglish (US)
Article numberD01301
JournalJournal of Geophysical Research Atmospheres
Volume111
Issue number1
DOIs
StatePublished - Jan 16 2006

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ozonesondes
ozonesonde
Ozone
Southern Hemisphere
paradoxes
ozone
biomass burning
MOZAIC program
Biomass
Troposphere
troposphere
continents
hemispheres
biomass
burning season
European Airbus
lightning
mixing ratio
vertical profile
satellite data

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Oceanography
  • Forestry
  • Ecology
  • Aquatic Science
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

Cite this

Sauvage, B., Thouret, V., Thompson, A. M., Witte, J. C., Cammas, J. P., Nédéléc, P., & Athier, G. (2006). Enhanced view of the "tropical Atlantic ozone paradox" and "zonal wave one" from the in situ MOZAIC and SHADOZ data. Journal of Geophysical Research Atmospheres, 111(1), [D01301]. https://doi.org/10.1029/2005JD006241
Sauvage, B. ; Thouret, V. ; Thompson, Anne Mee ; Witte, J. C. ; Cammas, J. P. ; Nédéléc, P. ; Athier, G. / Enhanced view of the "tropical Atlantic ozone paradox" and "zonal wave one" from the in situ MOZAIC and SHADOZ data. In: Journal of Geophysical Research Atmospheres. 2006 ; Vol. 111, No. 1.
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abstract = "Ozone vertical profiles from the Measurements of Ozone from Airbus In-service Aircraft (MOZAIC) program over Africa are used to complement pictures of the wave-one pattern and the {"}tropical Atlantic paradox{"} identified through soundings in the Southern Hemisphere Additional Ozonesondes (SHADOZ) network. The Atlantic paradox refers to a greater tropospheric ozone column amount over the South Atlantic than the North Atlantic during the West African biomass burning season. SHADOZ and MOZAIC data from 1998-2002 and 1997-2004, respectively, are used to show that these two phenomena are linked. The combined data are used to address the following: Does the (continental) MOZAIC data modify the appearance of the paradox? Do lower tropospheric MOZAIC data lead to new conclusions about ozone in the wave-one maximum region? During December, January, and February (DJF), the lower troposphere over Africa exhibits a higher ozone signal in the burning hemisphere, that is, north of the equator, so the {"}paradox{"} does not appear over the African continent. The MOZAIC data set over Africa highlights another component of the wave-one feature when the tropospheric ozone mixing ratio is viewed in zonal cross section. The lower troposphere makes a nonnegligible contribution to the regionally higher ozone column during the biomass burning periods of each hemisphere (DJF) for West Africa and June, July, and August (JJA) for the central Africa region. A southern preference for the wave-one character, previously deduced from satellite data, is confirmed with a stronger maximum in September, October, and November (SON). Both the paradox and wave-one phenomena are consistent with a view that the African continent is a major source of biomass burning and lightning emissions.",
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Enhanced view of the "tropical Atlantic ozone paradox" and "zonal wave one" from the in situ MOZAIC and SHADOZ data. / Sauvage, B.; Thouret, V.; Thompson, Anne Mee; Witte, J. C.; Cammas, J. P.; Nédéléc, P.; Athier, G.

In: Journal of Geophysical Research Atmospheres, Vol. 111, No. 1, D01301, 16.01.2006.

Research output: Contribution to journalArticle

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AU - Sauvage, B.

AU - Thouret, V.

AU - Thompson, Anne Mee

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AU - Athier, G.

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