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Reconstructing the quasi‐biennial oscillation back to the early 1900s
Author(s) -
Brönnimann Stefan,
Annis Jeffrey L.,
Vogler Christian,
Jones Phil D.
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 - 10.1029/2007gl031354
Subject(s) - stratosphere , quasi biennial oscillation , climatology , oscillation (cell signaling) , environmental science , atmosphere (unit) , atmospheric sciences , geology , meteorology , physics , genetics , biology
The quasi‐biennial oscillation (QBO) is important for understanding the dynamical and chemical variability of the global stratosphere. Currently available wind data from the equatorial stratosphere extend back to 1953. Here we present reconstructions of the QBO extending back to 1900 that can be used to constrain climate model simulations. The reconstructions are based on historical pilot balloon data as well as hourly sea‐level pressure (SLP) data from Jakarta, Indonesia. The latter were used to extract the signal of the solar semi‐diurnal tide in the middle atmosphere, which is modulated by the QBO. The reconstructions are in good agreement with the QBO signal extracted from historical total ozone data extending back to 1924. Further analyses suggest that the maximum phases of the QBO are captured relatively well after about 1910.