Intraseasonal variations of the tropical total ozone and their connection to the Madden-Julian Oscillation

Baijun Tian; Y.L. Yung; D.E. Waliser; T. Tyranowski; L. Kuai; E.J. Fetzer; F.W. Irion

doi:10.1029/2007GL029451

Intraseasonal variations of the tropical total ozone and their connection to the Madden-Julian Oscillation

Baijun Tian^*, Y.L. Yung, D.E. Waliser, T. Tyranowski, L. Kuai, E.J. Fetzer, F.W. Irion

^*Corresponding author for this work

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Abstract

We investigate the intraseasonal (30-90 day) variations in satellite-observed tropical total ozone (O₃) and their connection to the Madden-Julian Oscillation (MJO). Tropical total O₃ intraseasonal variations are large (∼±10 DU) and comparable to those in annual and interannual time scales. These O₃ anomalies are mainly evident in the subtropics over the Pacific and eastern; hemisphere and propagate slowly eastward (∼5 m s^-1). The subtropical negative (positive) O₃ anomalies are typically collocated with the subtropical upper troposphere anticyclones (cyclones) generated by equatorial MJO convection and flank or lie to the west of the equatorial enhanced (suppressed) MJO convection. The subtropical O₃ are anticorrelated with geopotential height anomalies near the tropopause and thus mainly associated with the O₃ variability in the stratosphere rather the troposphere. Over the equatorial regions, total O₃ anomalies are small.

Original language	English
Article number	L08704
Journal	Geophysical research letters
Volume	34
Issue number	8
DOIs	https://doi.org/10.1029/2007GL029451
Publication status	Published - 28 Apr 2007
Externally published	Yes

Keywords

n/a OA procedure

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title = "Intraseasonal variations of the tropical total ozone and their connection to the Madden-Julian Oscillation",

abstract = "We investigate the intraseasonal (30-90 day) variations in satellite-observed tropical total ozone (O3) and their connection to the Madden-Julian Oscillation (MJO). Tropical total O3 intraseasonal variations are large (∼±10 DU) and comparable to those in annual and interannual time scales. These O3 anomalies are mainly evident in the subtropics over the Pacific and eastern; hemisphere and propagate slowly eastward (∼5 m s-1). The subtropical negative (positive) O3 anomalies are typically collocated with the subtropical upper troposphere anticyclones (cyclones) generated by equatorial MJO convection and flank or lie to the west of the equatorial enhanced (suppressed) MJO convection. The subtropical O3 are anticorrelated with geopotential height anomalies near the tropopause and thus mainly associated with the O3 variability in the stratosphere rather the troposphere. Over the equatorial regions, total O3 anomalies are small.",

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T1 - Intraseasonal variations of the tropical total ozone and their connection to the Madden-Julian Oscillation

AU - Tian, Baijun

AU - Yung, Y.L.

AU - Waliser, D.E.

AU - Tyranowski, T.

AU - Kuai, L.

AU - Fetzer, E.J.

AU - Irion, F.W.

PY - 2007/4/28

Y1 - 2007/4/28

N2 - We investigate the intraseasonal (30-90 day) variations in satellite-observed tropical total ozone (O3) and their connection to the Madden-Julian Oscillation (MJO). Tropical total O3 intraseasonal variations are large (∼±10 DU) and comparable to those in annual and interannual time scales. These O3 anomalies are mainly evident in the subtropics over the Pacific and eastern; hemisphere and propagate slowly eastward (∼5 m s-1). The subtropical negative (positive) O3 anomalies are typically collocated with the subtropical upper troposphere anticyclones (cyclones) generated by equatorial MJO convection and flank or lie to the west of the equatorial enhanced (suppressed) MJO convection. The subtropical O3 are anticorrelated with geopotential height anomalies near the tropopause and thus mainly associated with the O3 variability in the stratosphere rather the troposphere. Over the equatorial regions, total O3 anomalies are small.

AB - We investigate the intraseasonal (30-90 day) variations in satellite-observed tropical total ozone (O3) and their connection to the Madden-Julian Oscillation (MJO). Tropical total O3 intraseasonal variations are large (∼±10 DU) and comparable to those in annual and interannual time scales. These O3 anomalies are mainly evident in the subtropics over the Pacific and eastern; hemisphere and propagate slowly eastward (∼5 m s-1). The subtropical negative (positive) O3 anomalies are typically collocated with the subtropical upper troposphere anticyclones (cyclones) generated by equatorial MJO convection and flank or lie to the west of the equatorial enhanced (suppressed) MJO convection. The subtropical O3 are anticorrelated with geopotential height anomalies near the tropopause and thus mainly associated with the O3 variability in the stratosphere rather the troposphere. Over the equatorial regions, total O3 anomalies are small.

KW - n/a OA procedure

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VL - 34

JO - Geophysical research letters

JF - Geophysical research letters

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M1 - L08704

ER -

Intraseasonal variations of the tropical total ozone and their connection to the Madden-Julian Oscillation

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Keywords

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