QBO ( Quasi biennial oscillation)…
LIST OF PUBLISHED RESEARCH ARTICLES
(I will add to the list as l come across them)
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QBO time series
“30 hpa zonal winds on the equator up in the stratosphere ( upper atmosphere layer)
A stratospheric wind band along the equatorial latitude .
Changes direction periodically. Either easterly or westerly direction zonally across the stratospheric equatorial line of latitude”
The QBO was discovered in the 1950s
by researchers at the UK Meteorological Office (Graystone 1959)”
“Zonally symmetric easterly and westerly wind regimes alternate regularly with periods varying from about 24 to 30 months(Holton,1992)
The fastest observed oscillation had a period close to 20 months(1959-1961) and the slowest was 36 months(1984-1987),
the mean period was 28.2 months(Pawson et al 1993b);about 5 cycles in 12 years(Maruyama,1997)”.
Can irregularities of solar proxies help understand quasi-biennial solar variations?
Nonlin. Processes Geophys., 21, 797-813, 2014
A. Shapoval1,3,4, J. L. Le Mouël2, M. Shnirman1,2, and V. Courtillot2
“We propose that the HSV( half schwabe) behavior of the irregularity index of ISSN Iinternational sunspot number)may be linked to the presence of strong QBO before 1915–1930, a transition and their disappearance around 1975, corresponding to a change in regime of solar activity.”