Effects of the 2004 El Nião on tropospheric ozone and water vapor

S. Chandra; J. R. Ziemke; M. R. Schoeberl; L. Froidevaux; W. G. Read; P. F. Levelt; P. K. Bhartia

doi:10.1029/2006GL028779

Effects of the 2004 El Nião on tropospheric ozone and water vapor

S. Chandra, J. R. Ziemke, M. R. Schoeberl, L. Froidevaux, W. G. Read, P. F. Levelt, P. K. Bhartia

Atmospheric Chemistry Observations & Modeling Lab

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

The global effects of the 2004 El Niño on tropospheric ozone and H₂O based on Aura OMI and MLS measurements are analyzed. Although it was a weak El Niño from a historical perspective, it produced significant changes in these parameters in tropical latitudes. Tropospheric ozone increased by 10-20% over most of the western Pacific region and decreased by about the same amount over the eastern Pacific region. H₂O in the upper troposphere showed similar changes but with opposite sign. These zonal changes in tropospheric ozone and H₂O are caused by the eastward shift in the Walker circulation in the tropical pacific region during El Niño. During the 2004 El Niño, biomass burning did not have a significant effect on the ozone budget in the troposphere, unlike the 1997 El Niño. Zonally averaged tropospheric column ozone did not change significantly either globally or over tropical latitudes.

Original language	English
Article number	L06802
Journal	Geophysical Research Letters
Volume	34
Issue number	6
DOIs	https://doi.org/10.1029/2006GL028779
State	Published - Mar 28 2007

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title = "Effects of the 2004 El Ni{\~a}o on tropospheric ozone and water vapor",

abstract = "The global effects of the 2004 El Ni{\~n}o on tropospheric ozone and H2O based on Aura OMI and MLS measurements are analyzed. Although it was a weak El Ni{\~n}o from a historical perspective, it produced significant changes in these parameters in tropical latitudes. Tropospheric ozone increased by 10-20\% over most of the western Pacific region and decreased by about the same amount over the eastern Pacific region. H2O in the upper troposphere showed similar changes but with opposite sign. These zonal changes in tropospheric ozone and H2O are caused by the eastward shift in the Walker circulation in the tropical pacific region during El Ni{\~n}o. During the 2004 El Ni{\~n}o, biomass burning did not have a significant effect on the ozone budget in the troposphere, unlike the 1997 El Ni{\~n}o. Zonally averaged tropospheric column ozone did not change significantly either globally or over tropical latitudes.",

author = "S. Chandra and Ziemke, \{J. R.\} and Schoeberl, \{M. R.\} and L. Froidevaux and Read, \{W. G.\} and Levelt, \{P. F.\} and Bhartia, \{P. K.\}",

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doi = "10.1029/2006GL028779",

language = "English",

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journal = "Geophysical Research Letters",

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T1 - Effects of the 2004 El Nião on tropospheric ozone and water vapor

AU - Chandra, S.

AU - Ziemke, J. R.

AU - Schoeberl, M. R.

AU - Froidevaux, L.

AU - Read, W. G.

AU - Levelt, P. F.

AU - Bhartia, P. K.

PY - 2007/3/28

Y1 - 2007/3/28

N2 - The global effects of the 2004 El Niño on tropospheric ozone and H2O based on Aura OMI and MLS measurements are analyzed. Although it was a weak El Niño from a historical perspective, it produced significant changes in these parameters in tropical latitudes. Tropospheric ozone increased by 10-20% over most of the western Pacific region and decreased by about the same amount over the eastern Pacific region. H2O in the upper troposphere showed similar changes but with opposite sign. These zonal changes in tropospheric ozone and H2O are caused by the eastward shift in the Walker circulation in the tropical pacific region during El Niño. During the 2004 El Niño, biomass burning did not have a significant effect on the ozone budget in the troposphere, unlike the 1997 El Niño. Zonally averaged tropospheric column ozone did not change significantly either globally or over tropical latitudes.

AB - The global effects of the 2004 El Niño on tropospheric ozone and H2O based on Aura OMI and MLS measurements are analyzed. Although it was a weak El Niño from a historical perspective, it produced significant changes in these parameters in tropical latitudes. Tropospheric ozone increased by 10-20% over most of the western Pacific region and decreased by about the same amount over the eastern Pacific region. H2O in the upper troposphere showed similar changes but with opposite sign. These zonal changes in tropospheric ozone and H2O are caused by the eastward shift in the Walker circulation in the tropical pacific region during El Niño. During the 2004 El Niño, biomass burning did not have a significant effect on the ozone budget in the troposphere, unlike the 1997 El Niño. Zonally averaged tropospheric column ozone did not change significantly either globally or over tropical latitudes.

UR - https://www.scopus.com/pages/publications/34249897549

U2 - 10.1029/2006GL028779

DO - 10.1029/2006GL028779

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AN - SCOPUS:34249897549

SN - 0094-8276

VL - 34

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 6

M1 - L06802

ER -

Effects of the 2004 El Nião on tropospheric ozone and water vapor

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