Journal ArticleDOI
Variation with longitude of the quasi-biennial oscillation1,,2
A. D. Belmont,D. G. Dartt +1 more
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In this article, daily data at 16 stations along five latitudes from 13°N. to 33°S were carefully examined at the 50-, 100-, and 500-mb levels for evidence of longitudinal phase progression of the quasi-biennial oscillation (QBO).Abstract:
Daily data at 16 stations along five latitudes from 13°N. to 33°S. were carefully examined at the 50-, 100-, and 500-mb. levels for evidence of longitudinal phase progression of the quasi-biennial oscillation (QBO). At 50 mb. there is evidence of west to east progression although there are many irregularities and much uncertainty. The phase dates differ by days at low latitudes. At 100 and 500 mb., it appears that the QBO originates in tropical America and progresses both eastward and westward, occurring last in the Indian Ocean. The progression time ranges from 1 to 2 yr. At 500 and 100 mb., however, a cellular phase progression in possible due to the difficulty of identifying corresponding waves with a very meager network. It appears now that the QBO may not be simultaneous in longitude and that its speed and even direction of propagation, like its other properties, may very from cycle to cycle. The analysis is being expanded to other levels and latitudes to obtain better continuity in followin...read more
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Journal ArticleDOI
The quasi-biennial oscillation
Mark P. Baldwin,Lesley J. Gray,Timothy J. Dunkerton,Kevin Hamilton,Peter H. Haynes,William J. Randel,James R. Holton,M. J. Alexander,Isamu Hirota,Takeshi Horinouchi,Dylan B. A. Jones,J. S. Kinnersley,C. Marquardt,Kaoru Sato,M. Takahashi +14 more
TL;DR: The quasi-biennial oscillation (QBO) as discussed by the authors dominates the variability of the equatorial stratosphere (∼16-50 km) and is easily seen as downward propagating easterly and westerly wind regimes, with a variable period averaging approximately 28 months.
Journal ArticleDOI
Global meridional interactions in stratosphere and troposphere
TL;DR: Significant correlations have been found between year to year mean latitudes of the surface high pressure belt, L, over eastern Australia and atmospheric parameters such as total ozone, winds and temperatures at various levels in the troposphere and stratosphere, and rainfall.
Journal ArticleDOI
Effects of an imposed quasi-biennial oscillation in a comprehensive troposphere-stratosphere-mesosphere general circulation model
TL;DR: A 48-yr integration was performed using the Geophysical Fluid Dynamics Laboratory SKYHI troposphere- stratosphere-mesosphere GCM with an imposed zonal momentum forcing designed to produce a quasi-biennial oscillation (QBO) in the tropical stratosphere as mentioned in this paper.
Journal ArticleDOI
Total ozone seasonal and interannual variations derived from the 7 year Nimbus-4 BUV data set
TL;DR: In this article, the seasonal and interannual variations of total ozone over a 7-year period were studied using harmonic and superposition analyses of zonal mean data at 10 deg latitudinal increments.
Journal ArticleDOI
Construction and application of covariance functions with variable length‐fields
TL;DR: In this article, a multi-level covariance function with variable length-fields is proposed to represent the vertical wind shear associated with the Quasi-Biennial Oscillation (QBO) from sparse radiosonde wind observations in the tropical lower stratosphere.
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Journal ArticleDOI
Surface signs of the biennial atmospheric pulse
TL;DR: In this article, the authors present evidence for the presence of a persistent periodicity somewhat in excess of 2 years duration in the surface temperature at widely separated stations along two meridians from Norway to South Africa and from Canada to Cape Horn.
Journal ArticleDOI
Linear interpolation, extrapolation, and prediction of random space-time fields with a limited domain of measurement
D. Petersen,D. Middleton +1 more
TL;DR: A one-dimensional second-order Butterworth process is used to illustrate the effects of various postulated constraints on the sampling and filtering configuration.
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Harmonic analysis of the biennial zonal-wind and temperature regimes
James K. Angell,J. Korshover +1 more
TL;DR: In this article, the phase angle and amplitude of the third (26-month) harmonic was determined as a function of latitude and height for stations within or bordering the Yorth Pacific Ocean.