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El Niño‐Southern Oscillation and Indian Ocean Dipole contribution to the zonal mean total ozone in the Northern Hemisphere
Author(s) -
Krzyścin J. W.
Publication year - 2016
Publication title -
international journal of climatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.58
H-Index - 166
eISSN - 1097-0088
pISSN - 0899-8418
DOI - 10.1002/joc.4933
Subject(s) - indian ocean dipole , climatology , el niño southern oscillation , northern hemisphere , southern hemisphere , southern oscillation , atmospheric sciences , environmental science , ozone , oscillation (cell signaling) , quasi biennial oscillation , geology , geography , stratosphere , meteorology , chemistry , biochemistry
We present the first analysis of the combined El Niño‐Southern Oscillation ( ENSO ) and Indian Ocean Dipole ( IOD ) contribution to the monthly zonal means of total ozone ( TO 3 ) in the Northern Hemisphere for the 1970–2015 period. The Solar Backscatter UV merged TO 3 (version 8.6) data set is examined using the standard multiple regression model with new proposed regressors accounting for the impact of the strong ENSO and IOD effects on the zonal mean ozone. The new regressors are selected using the principal component analysis applied to the standard ENSO and IOD indices. The ENSO and IOD induce ±2% month‐to‐month TO 3 oscillations in the equatorial‐, mid‐, and even in high latitudinal zones. Long‐term effects of ∼1% 10 year −1 are found. In autumn, a strong positive phase IOD is associated with ∼0.5% positive and ∼1.5% negative anomalies in the 30°–35°N and 65°–70°N regions, respectively. The IOD contribution to the zonal TO 3 means is more pronounced than that of ENSO .