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Intraseasonal variations of the tropical total ozone and their connection to the Madden‐Julian Oscillation
Author(s) -
Tian B.,
Yung Y. L.,
Waliser D. E.,
Tyranowski T.,
Kuai L.,
Fetzer E. J.,
Irion F. W.
Publication year - 2007
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2007gl029451
Subject(s) - madden–julian oscillation , climatology , anticyclone , troposphere , subtropics , stratosphere , atmospheric sciences , geopotential height , tropical cyclogenesis , convection , tropopause , tropical cyclone , southern hemisphere , geology , northern hemisphere , environmental science , quasi biennial oscillation , precipitation , cyclone (programming language) , meteorology , geography , field programmable gate array , fishery , computer science , computer hardware , biology
We investigate the intraseasonal (30–90 day) variations in satellite‐observed tropical total ozone (O 3 ) and their connection to the Madden‐Julian Oscillation (MJO). Tropical total O 3 intraseasonal variations are large (∼±10 DU) and comparable to those in annual and interannual time scales. These O 3 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) O 3 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 O 3 are anti‐correlated with geopotential height anomalies near the tropopause and thus mainly associated with the O 3 variability in the stratosphere rather the troposphere. Over the equatorial regions, total O 3 anomalies are small.