[Parameters: Topic='ATMOSPHERE', Term='ATMOSPHERIC WINDS', Variable_Level_1='UPPER LEVEL WINDS']
Labitzke Berlin Stratospheric Data: Quasi-Biennial Oscillation DataEntry ID: BERLIN_STRATO_QBO
Abstract: Almost 50 years ago, the Quasi-Biennial Oscillation (QBO) of the winds
in the equatorial stratosphere was detected due to the establishment
of a global, regularly measuring radiosonde network.
As part of the compilation of our daily stratospheric charts we have
tabulated the daily wind observations of selected stations near the
equator since 1957. For the earlier years, the values were extracted
... from the Northern Hemisphere Data Tabulations. From these daily values
the monthly mean zonal wind components were calculated for the levels
70, 50, 40, 30, 20, 15, and 10 hPa and a data set from 1953 to the
present was produced by combining the observations of the three
radiosonde stations Canton Island (closed 1967), Gan/Maledive Islands
(closed 1975), and Singapore (data file: qbo_53-01.dat; for a
description of the data format cf. Section 8.4).
This data set is supposed to be representative of the equatorial belt
since all studies have shown that longitudinal differences in the
phase of the QBO are small. It should be noted, however, that some
uncertainties arose at higher levels during the early years from the
scarcity of observations. More information on the original data can be
found in Naujokat (1986).
A second data set has been produced since 1987 from the Singapore data
by using the daily vertical wind profiles to obtain a higher vertical
resolution. In this set you will find the monthly mean zonal wind
components at Singapore for every year from 1987 to the present at the
levels 100 (since 1997), 90, 80, 70, 60, 50, 45, 40, 35, 30, 25, 20,
15, 12, and 10-hPa (singapore_87-01.dat).
Detailed information on all aspects of the QBO, its dynamics and its
global effects, can be found in a most recent review paper of Baldwin
et al (2001), including a comprehensive bibliography. A study of the
coupling between the tropical QBO and the global stratospheric
circulation has been performed by Marquardt (1998).
For more information, see:
Data Set Citation
Dataset Originator/Creator: K. Labitzke and collaborators
Dataset Title: Quasi-Biennial Oscillation Data
Dataset Series Name: Berlin Stratospheric Data Series
Dataset Release Date: 2002
Dataset Release Place: Boulder, CO
Dataset Publisher: National Center for Atmospheric Research (NCAR)Online Resource: http://rda.ucar.edu/cdroms/karin_labitzke_strat_grids/start.html
Start Date: 1953-01-01
Temporal Resolution: monthly mean, daily, climatological
ISO Topic Category
Use Constraints Users must acknowledge:
K. Labitzke and Collaborators, 2002: The Berlin Stratospheric Data
Series, CD from Meteorological Institute, Free University Berlin.
Data Set Progress
Distribution Media: online, CD, WWW
Distribution Format: ASCII text
Fax: +49-30-838 71 166
Email: labitzke at strat01.met.fu-berlin.de
Freie Universitat Berlin Institut fur Meteorologie Carl-Heinrich-Becker-Weg 6-10
Postal Code: 12165
Baldwin, M.P., L.J. Gray, T.J. Dunkerton, K. Hamilton, P.H. Haynes,
W.J. Randel, J.R. Holton, M.J. Alexander, I. Hirota, T. Horinouchi,
D.B.A. Jones, J.S. Kinnersley, C. Marquardt, K. Sato, and
M. Takahashi, 2001: The Quasi-Biennial Oscillation. Reviews of
Geophys., 39, 179-229.
Naujokat, B., 1986: An update of the observed quasi-biennial
oscillation of the stratospheric winds over the
tropics. J. Atmos. Sci., 43, 1873-1877.
Marquardt, C. and B. Naujokat, 1997: An update of the equatorial QBO
and its variability. SPARC Melbourne, WMO/TD-NO. 814, 87-90.
Marquardt, C., 1998: Die tropische QBO und dynamische Prozesse in der
Stratosphare. PhD Thesis, Met. Abh. FU-Berlin, Serie A, Band 9/Heft
4, Verlag Dietrich Reimer Berlin, 260 S.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2003-02-27
Last DIF Revision Date: 2013-05-24