Effects of the 2004 El Nino 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 Nino 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

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The global effects of the 2004 El Nino on tropospheric ozone and H/sub 2/O based on Aura OMI and MLS measurements are analyzed. Although it was a weak El Nino 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. H/sub 2/O in the upper troposphere showed similar changes but with opposite sign. These zonal changes in tropospheric ozone and H/sub 2/O are caused by the eastward shift in the Walker circulation in the tropical pacific region during El Nino. During the 2004 El Nino, biomass burning did not have a significant effect on the ozone budget in the troposphere, unlike the 1997 El Nino. Zonally averaged tropospheric column ozone did not change significantly either globally or over tropical latitudes

Originele taal-2	Engels
Artikelnummer	L06802
Pagina's (van-tot)	L06802-1/5
Aantal pagina's	5
Tijdschrift	Geophysical Research Letters
Volume	34
Nummer van het tijdschrift	6
DOI's	https://doi.org/10.1029/2006GL028779
Status	Gepubliceerd - 2007

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10.1029/2006GL028779

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title = "Effects of the 2004 El Nino on tropospheric ozone and water vapor",

abstract = "The global effects of the 2004 El Nino on tropospheric ozone and H/sub 2/O based on Aura OMI and MLS measurements are analyzed. Although it was a weak El Nino 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. H/sub 2/O in the upper troposphere showed similar changes but with opposite sign. These zonal changes in tropospheric ozone and H/sub 2/O are caused by the eastward shift in the Walker circulation in the tropical pacific region during El Nino. During the 2004 El Nino, biomass burning did not have a significant effect on the ozone budget in the troposphere, unlike the 1997 El Nino. Zonally averaged tropospheric column ozone did not change significantly either globally or over tropical latitudes",

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

year = "2007",

doi = "10.1029/2006GL028779",

language = "English",

volume = "34",

pages = "L06802--1/5",

journal = "Geophysical Research Letters",

issn = "0094-8276",

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T1 - Effects of the 2004 El Nino 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

Y1 - 2007

N2 - The global effects of the 2004 El Nino on tropospheric ozone and H/sub 2/O based on Aura OMI and MLS measurements are analyzed. Although it was a weak El Nino 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. H/sub 2/O in the upper troposphere showed similar changes but with opposite sign. These zonal changes in tropospheric ozone and H/sub 2/O are caused by the eastward shift in the Walker circulation in the tropical pacific region during El Nino. During the 2004 El Nino, biomass burning did not have a significant effect on the ozone budget in the troposphere, unlike the 1997 El Nino. Zonally averaged tropospheric column ozone did not change significantly either globally or over tropical latitudes

AB - The global effects of the 2004 El Nino on tropospheric ozone and H/sub 2/O based on Aura OMI and MLS measurements are analyzed. Although it was a weak El Nino 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. H/sub 2/O in the upper troposphere showed similar changes but with opposite sign. These zonal changes in tropospheric ozone and H/sub 2/O are caused by the eastward shift in the Walker circulation in the tropical pacific region during El Nino. During the 2004 El Nino, biomass burning did not have a significant effect on the ozone budget in the troposphere, unlike the 1997 El Nino. Zonally averaged tropospheric column ozone did not change significantly either globally or over tropical latitudes

U2 - 10.1029/2006GL028779

DO - 10.1029/2006GL028779

M3 - Article

SN - 0094-8276

VL - 34

SP - L06802-1/5

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 6

M1 - L06802

ER -

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

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