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The correlation between tropical total ozone and outgoing long‐wave radiation
Author(s) -
Williams Victoria,
Toumi Ralf
Publication year - 2001
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49712757315
Subject(s) - ozone , total ozone mapping spectrometer , climatology , empirical orthogonal functions , environmental science , atmospheric sciences , el niño southern oscillation , multivariate enso index , oscillation (cell signaling) , ozone layer , meteorology , la niña , physics , geology , chemistry , biochemistry
Interannual variations in tropical column ozone, as observed by the Total Ozone Mapping Spectrometer, are analysed for the period 1979–94 using linear regression to extract signals related to the solar cycle, quasi‐biennial oscillation, and El Niño Southern Oscillation (ENSO). Using time series of outgoing long‐wave radiation (OLR) as a proxy for ENSO variations, rather than the widely used Southern Oscillation Index is found to improve the fit to observed ozone. The variability in the ozone and OLR datasets is investigated using empirical orthogonal function analysis. The most strongly correlated OLR and ozone modes exhibit ENSO‐like variability.