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Modes of interannual variability in the stratosphere
Author(s) -
Dunkerton Timothy J.,
Baldwin Mark P.
Publication year - 1992
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 - 10.1029/91gl02869
Subject(s) - stratosphere , quasi biennial oscillation , climatology , environmental science , northern hemisphere , oscillation (cell signaling) , atmospheric sciences , principal component analysis , southern hemisphere , el niño southern oscillation , variance (accounting) , geology , mathematics , statistics , chemistry , accounting , business , biochemistry
During 1964–91, stratospheric temperature and circulation in northern hemisphere winter varied interannually on time scales from 2 to ∼12 years. A substantial percentage of December‐February (DJF) interannual variance was correlated with the quasi‐biennial oscillation (QBO). Additional monthly variance could be accounted for by quasi‐decadal oscillation and QBO/low‐frequency modulation. The QBO was the largest and most consistent of these signals, and its decadal modulation explains an apparent correlation with the solar cycle depending on the sign of the QBO ‐ an interpretation supported by principal component analysis.