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1

Baldwin, M. P., L. J. Gray, T. J. Dunkerton, et al. "The quasi-biennial oscillation." Reviews of Geophysics 39, no. 2 (2001): 179–229. http://dx.doi.org/10.1029/1999rg000073.

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2

Semin, Benoît, and François Pétrelis. "Quasi-biennial oscillation: laboratory experiments." Comptes Rendus. Physique 25, S3 (2024): 1–25. http://dx.doi.org/10.5802/crphys.195.

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3

Baldwin, Mark P., and Timothy J. Dunkerton. "Quasi-Biennial Oscillation above 10 MB." Geophysical Research Letters 18, no. 7 (1991): 1205–8. http://dx.doi.org/10.1029/91gl01333.

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4

Jain, Kiran, Partha Chowdhury, and Sushanta C. Tripathy. "Helioseismic Investigation of Quasi-biennial Oscillation Source Regions." Astrophysical Journal 959, no. 1 (2023): 16. http://dx.doi.org/10.3847/1538-4357/ad045c.

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Abstract We studied the temporal evolution of quasi-biennial oscillations (QBOs) using acoustic mode oscillation frequencies from the Global Oscillation Network Group. The data used here span more than 25 yr, covering solar cycles 23 and 24 and the ascending phase of cycle 25. The analysis reveals that QBO-like signals are present in both the cycles, but with different periods. The dominant QBO period in cycle 23 is found to be about 2 yr, while it is about 3 yr in cycle 24. Furthermore, the quasi-biennial oscillatory signals are present only during the ascending and high-activity phases of cy
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5

Kwan, Kok Foo, and Azizan Abu Samah. "A conceptual model relating the quasi-biennial oscillation and the tropospheric biennial oscillation." International Journal of Climatology 23, no. 3 (2003): 347–62. http://dx.doi.org/10.1002/joc.876.

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6

Anstey, James A., John F. Scinocca, and Martin Keller. "Simulating the QBO in an Atmospheric General Circulation Model: Sensitivity to Resolved and Parameterized Forcing." Journal of the Atmospheric Sciences 73, no. 4 (2016): 1649–65. http://dx.doi.org/10.1175/jas-d-15-0099.1.

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Abstract The quasi-biennial oscillation (QBO) of tropical stratospheric zonal winds is simulated in an atmospheric general circulation model and its sensitivity to model parameters is explored. Vertical resolution in the lower tropical stratosphere finer than ≈1 km and sufficiently strong forcing by parameterized nonorographic gravity wave drag are both required for the model to exhibit a QBO-like oscillation. Coarser vertical resolution yields oscillations that are seasonally synchronized and driven mainly by gravity wave drag. As vertical resolution increases, wave forcing in the tropical lo
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7

Gray, Lesley J., James A. Anstey, Yoshio Kawatani, Hua Lu, Scott Osprey, and Verena Schenzinger. "Surface impacts of the Quasi Biennial Oscillation." Atmospheric Chemistry and Physics 18, no. 11 (2018): 8227–47. http://dx.doi.org/10.5194/acp-18-8227-2018.

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Abstract. Teleconnections between the Quasi Biennial Oscillation (QBO) and the Northern Hemisphere zonally averaged zonal winds, mean sea level pressure (mslp) and tropical precipitation are explored. The standard approach that defines the QBO using the equatorial zonal winds at a single pressure level is compared with the empirical orthogonal function approach that characterizes the vertical profile of the equatorial winds. Results are interpreted in terms of three potential routes of influence, referred to as the tropical, subtropical and polar routes. A novel technique is introduced to sepa
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8

Lu, Bei-Wei, Lionel Pandolfo, and Kevin Hamilton. "Nonlinear Representation of the Quasi-Biennial Oscillation." Journal of the Atmospheric Sciences 66, no. 7 (2009): 1886–904. http://dx.doi.org/10.1175/2008jas2967.1.

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Abstract A nonlinear principal component analysis (NLPCA) is applied to monthly mean zonal wind observations from January 1956 through December 2007 taken at seven pressure levels between 10 and 70 hPa in the stratosphere near the equator to represent the well-known quasi-biennial oscillation (QBO) and investigate its variability and structure. The NLPCA is conducted using a simplified two–hidden layer feed-forward neural network that alleviates the problems of nonuniqueness of solutions and data overfitting that plague nonlinear techniques of principal component analysis. The QBO is used as a
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9

Rangarajan, G. K. "Quasi-biennial oscillation in geomagnetic disturbance field." Journal of Earth System Science 94, no. 1 (1985): 29–34. http://dx.doi.org/10.1007/bf02863406.

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10

Fernández, Laura I., Amalia M. Meza, and Ana G. Elías. "Quasi-biennial oscillation in GPS VTEC measurements." Advances in Space Research 54, no. 2 (2014): 161–67. http://dx.doi.org/10.1016/j.asr.2014.03.027.

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11

KANE, R. P. "QBO and QTO of atmospheric trace elements nitrous oxide and chlorofluorocarbons: An update." MAUSAM 58, no. 1 (2021): 87–100. http://dx.doi.org/10.54302/mausam.v58i1.1136.

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An analysis of N2O (nitrous oxide) and CFC (chlorofluorocarbon) concentrations (monthly values) at various locations during 1978-2001 indicated seasonal variations. When these were minimized by calculating 12-month running means (12m) and 3-year running means (37m) were subtracted from 12m, the residues (12m-37m) showed oscillations with peak spacings in the QBO (quasi-biennial oscillation, 2-3 year) and in the QTO (quasi-triennial oscillation, 3-4 year) regions. The QBO at high northern latitudes roughly resembled the QBO of stratospheric low latitude winds and the QTO at low latitudes resemb
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12

Dunkerton, Timothy J., and Donald P. Delisi. "Interaction of the quasi-biennial oscillation and stratopause semiannual oscillation." Journal of Geophysical Research: Atmospheres 102, no. D22 (1997): 26107–16. http://dx.doi.org/10.1029/96jd03678.

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13

BHARGAVA, BN, and RK BANSAL. "A quasi-biennial oscillation in precipitation at some Indian stations." MAUSAM 20, no. 2 (2022): 127–28. http://dx.doi.org/10.54302/mausam.v20i2.5440.

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A search has been made for a quasi-biennial oscillation in precipitation from au analysis of yearly rainfall data from seven Indian stations. Results indicate the presence of a significant oscillation at Bombay and of a weak oscillation at five of the six other stations.
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14

Kane, R. P. "Quasi-biennial and quasi-triennial oscillations in geomagnetic activity indices." Annales Geophysicae 15, no. 12 (1997): 1581–94. http://dx.doi.org/10.1007/s00585-997-1581-1.

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Abstract. Data for geomagnetic activity index aa for 1868–1994 were subjected to spectral analysis for 12 intervals each of 11 consecutive years. In each interval, QBO and QTO (quasi-biennial and quasi-triennial oscillations) were observed at ~2.00, 2.15, 2.40, 2.70 y and ~3.20, 3.40 y, but not all in all intervals. These fluctuations are absent near (2–3 y before and after) the sunspot minima and are present only as 2 or 3 peaks in aa indices, one near or before the sunspot maximum and the other (one or two, generally the larger ones) in the declining phase of the sunspot cycle. Comparison wi
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15

Kim, Young-Ha. "Explaining the period fluctuation of the quasi-biennial oscillation." Atmospheric Chemistry and Physics 25, no. 11 (2025): 5647–64. https://doi.org/10.5194/acp-25-5647-2025.

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Abstract. The tropical stratosphere is characterized by a periodic oscillation of wind direction between westerly and easterly, known as the quasi-biennial oscillation (QBO), which modulates middle atmospheric circulations and surface climate on interannual timescales. The oscillation period fluctuates irregularly, ranging from 20 to 35 months. The causes of this fluctuation have long been hypothesized but lack observational evidence. This study shows that the period fluctuation is primarily driven by variability in small-scale wave (gravity wave) activity with an additional contribution from
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16

Maruyama, Taketo. "The Quasi-Biennial Oscillation (QBO) and Equatorial Waves." Papers in Meteorology and Geophysics 48, no. 1 (1997): 1–17. http://dx.doi.org/10.2467/mripapers.48.1.

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17

Match, Aaron, and Stephan Fueglistaler. "The Buffer Zone of the Quasi-Biennial Oscillation." Journal of the Atmospheric Sciences 76, no. 11 (2019): 3553–67. http://dx.doi.org/10.1175/jas-d-19-0151.1.

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Abstract The quasi-biennial oscillation (QBO) is a descending pattern of winds in the stratosphere that vanishes near the top of the tropical tropopause layer, even though the vertically propagating waves that drive the QBO are thought to originate in the troposphere several kilometers below. The region where there is low QBO power despite sufficient vertically propagating wave activity to drive a QBO is known as the buffer zone. Classical one-dimensional models of the QBO are ill suited to represent buffer zone dynamics because they enforce the attenuation of the QBO via a zero-wind lower bou
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18

Saravanan, R. "A Multiwave Model of the Quasi-biennial Oscillation." Journal of the Atmospheric Sciences 47, no. 21 (1990): 2465–74. http://dx.doi.org/10.1175/1520-0469(1990)047<2465:ammotq>2.0.co;2.

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19

Yongning, Shao, and Chen Longxun. "On quasi–biennial oscillation in air–sea system." Advances in Atmospheric Sciences 8, no. 1 (1991): 11–22. http://dx.doi.org/10.1007/bf02657361.

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20

Tang, W., X. H. Xue, J. Lei, and X. K. Dou. "Ionospheric quasi-biennial oscillation in global TEC observations." Journal of Atmospheric and Solar-Terrestrial Physics 107 (January 2014): 36–41. http://dx.doi.org/10.1016/j.jastp.2013.11.002.

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21

Hamilton, Kevin, Albert Hertzog, François Vial, and Georgiy Stenchikov. "Longitudinal Variation of the Stratospheric Quasi-Biennial Oscillation." Journal of the Atmospheric Sciences 61, no. 4 (2004): 383–402. http://dx.doi.org/10.1175/1520-0469(2004)061<0383:lvotsq>2.0.co;2.

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22

Anstey, James A., and Theodore G. Shepherd. "High-latitude influence of the quasi-biennial oscillation." Quarterly Journal of the Royal Meteorological Society 140, no. 678 (2013): 1–21. http://dx.doi.org/10.1002/qj.2132.

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23

Balcerak, Ernie. "Quasi-biennial oscillation predictable on multiannual time scales." Eos, Transactions American Geophysical Union 95, no. 22 (2014): 192. http://dx.doi.org/10.1002/2014eo220009.

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24

Yamazaki, Yosuke, Huixin Liu, Yang‐Yi Sun, Yasunobu Miyoshi, Michael J. Kosch, and Martin G. Mlynczak. "Quasi‐biennial oscillation of the ionospheric wind dynamo." Journal of Geophysical Research: Space Physics 122, no. 3 (2017): 3553–69. http://dx.doi.org/10.1002/2016ja023684.

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25

Haynes, Peter H. "The latitudinal structure of the quasi-biennial oscillation." Quarterly Journal of the Royal Meteorological Society 124, no. 552 (1998): 2645–70. http://dx.doi.org/10.1002/qj.49712455206.

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26

Lau, K. M., and P. J. Sheu. "Annual cycle, quasi-biennial oscillation, and southern oscillation in global precipitation." Journal of Geophysical Research 93, no. D9 (1988): 10975. http://dx.doi.org/10.1029/jd093id09p10975.

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27

Lu, Bei-Wei, and Lionel Pandolfo. "Nonlinear relation of the Arctic oscillation with the quasi-biennial oscillation." Climate Dynamics 36, no. 7-8 (2010): 1491–504. http://dx.doi.org/10.1007/s00382-010-0773-7.

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28

Szkolka, Wojciech Ryszard, Dariusz Bartłomiej Baranowski, Maria K. Flatau, Marzuki Marzuki, Toyoshi Shimomai, and Hiroyuki Hashiguchi. "Diurnal Cycle of Tropospheric Winds over West Sumatra and Its Variability Associated with Various Climate and Weather Modes." Atmosphere 14, no. 10 (2023): 1521. http://dx.doi.org/10.3390/atmos14101521.

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The typical diurnal variability of tropospheric winds over West Sumatra and their changes associated with El Niño Southern Oscillation, Quasi-Biennial Oscillation, Madden–Julian Oscillations and convectively coupled Kelvin waves during the extended boreal winter season are investigated based on nineteen years of observations from Equatorial Atmosphere Radar in Kototabang, Indonesia. Sub-diurnal wind variability is assessed based on the amplitude and phase of the diurnal (24 h) and semidiurnal (12 h) modes.The results show that composite diurnal variability is dominated by cloud-induced circula
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29

Kim, Young-Ha, Georg Sebastian Voelker, Gergely Bölöni, Günther Zängl, and Ulrich Achatz. "Crucial role of obliquely propagating gravity waves in the quasi-biennial oscillation dynamics." Atmospheric Chemistry and Physics 24, no. 5 (2024): 3297–308. http://dx.doi.org/10.5194/acp-24-3297-2024.

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Abstract. ​​​​​​​In climate modelling, the reality of simulated flows in the middle atmosphere is largely affected by the model's representation of gravity wave processes that are unresolved, while these processes are usually simplified to facilitate computations. The simplification commonly applied in existing climate models is to neglect wave propagation in horizontal direction and time. Here we use a model that fully represents the propagation of unresolved waves in all directions, thereby elucidating its dynamical effect upon the most important climate mode in the tropical stratosphere, i.
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30

Mehta, T., K. Jain, S. C. Tripathy, R. Kiefer, D. Kolotkov, and A.-M. Broomhall. "Cycle dependence of a quasi-biennial variability in the solar interior." Monthly Notices of the Royal Astronomical Society 515, no. 2 (2022): 2415–29. http://dx.doi.org/10.1093/mnras/stac1943.

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ABSTRACT We investigated the solar cycle dependence on the presence and periodicity of the Quasi-Biennial Oscillation (QBO). Using helioseismic techniques, we used solar oscillation frequencies from the Global Oscillations Network Group (GONG), Michelson Doppler Imager (MDI), and Helioseismic and Magnetic Imager (HMI) in the intermediate-degree range to investigate the frequency shifts over Cycles 23 and 24. We also examined two solar activity proxies, the F10.7 index and the Mg ii index, for the last four solar cycles to study the associated QBO. The analyses were performed using Empirical Mo
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31

Martin, Zane, Seok-Woo Son, Amy Butler, et al. "The influence of the quasi-biennial oscillation on the Madden–Julian oscillation." Nature Reviews Earth & Environment 2, no. 7 (2021): 477–89. http://dx.doi.org/10.1038/s43017-021-00173-9.

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32

Kuma, Ken-Ichi. "A quasi-biennial oscillation in the intensity of the intra-seasonal oscillation." International Journal of Climatology 10, no. 3 (1990): 263–78. http://dx.doi.org/10.1002/joc.3370100304.

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33

Hommel, R., C. Timmreck, M. A. Giorgetta, and H. F. Graf. "Quasi-biennial oscillation of the tropical stratospheric aerosol layer." Atmospheric Chemistry and Physics Discussions 14, no. 11 (2014): 16243–90. http://dx.doi.org/10.5194/acpd-14-16243-2014.

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Abstract. This study describes how aerosol in an aerosol-coupled climate model of the middle atmosphere is influenced by the quasi-biennial oscillation (QBO) during times when the stratosphere is largely unperturbed from volcanic material. In accordance with satellite observations, the tropical stratospheric aerosol load is predominately influenced by QBO induced anomalies in the vertical advection. Large impacts are seen in the size of aerosols, in particular in the region where aerosol evaporates. This turns the quasi-static balance between processes maintaining the vertical extent of the Ju
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34

Akstinas, Vytautas, and Arūnas Bukantis. "Quasi-biennial oscillation effect on climate indicators: Lithuania’s case." Baltica 28, no. 1 (2015): 19–28. http://dx.doi.org/10.5200/baltica.2015.28.03.

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The quasi-biennial oscillation (further – QBO) is a quasi-periodic oscillation of the equatorial zonal wind between easterlies and westerlies in the tropical stratosphere with a mean period of 26 to 29 months. Together with other circulation mechanisms, the QBO comprises a global climate system which affects the climate indices of different regions of the globe including Lithuania. The authors of the present paper chose to address the issue of the anomalies of precipitation in Lithuania. The research encompasses the time frame from 1953 to 2009: relationship between the periods without precipi
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35

SHIBATA, Kiyotaka, and Hiroaki NAOE. "Decadal Amplitude Modulations of the Stratospheric Quasi-biennial Oscillation." Journal of the Meteorological Society of Japan. Ser. II 100, no. 1 (2022): 29–44. http://dx.doi.org/10.2151/jmsj.2022-001.

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36

Ziemke, J. R., and J. L. Stanford. "Quasi-biennial oscillation and tropical waves in total ozone." Journal of Geophysical Research 99, no. D11 (1994): 23041. http://dx.doi.org/10.1029/94jd02149.

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37

Tseng, Lishan, and Carlos R. Mechoso. "A Quasi-Biennial Oscillation in the equatorial Atlantic Ocean." Geophysical Research Letters 28, no. 1 (2001): 187–90. http://dx.doi.org/10.1029/2000gl011206.

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38

Hommel, R., C. Timmreck, M. A. Giorgetta, and H. F. Graf. "Quasi-biennial oscillation of the tropical stratospheric aerosol layer." Atmospheric Chemistry and Physics 15, no. 10 (2015): 5557–84. http://dx.doi.org/10.5194/acp-15-5557-2015.

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Abstract. This study describes how aerosol in an aerosol-coupled climate model of the middle atmosphere is influenced by the quasi-biennial oscillation (QBO) during times when the stratosphere is largely unperturbed by volcanic material. In accordance with satellite observations, the vertical extent of the stratospheric aerosol layer in the tropics is modulated by the QBO by up to 6 km, or ~ 35% of its mean vertical extent between 100–7 hPa (about 16–33 km). Its largest vertical extent lags behind the occurrence of strongest QBO westerlies. The largest reduction lags behind maximum QBO easterl
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39

Osprey, S. M., N. Butchart, J. R. Knight, et al. "An unexpected disruption of the atmospheric quasi-biennial oscillation." Science 353, no. 6306 (2016): 1424–27. http://dx.doi.org/10.1126/science.aah4156.

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40

Fadnavis, S., and G. Beig. "Quasi-biennial oscillation in ozone and temperature over tropics." Journal of Atmospheric and Solar-Terrestrial Physics 71, no. 2 (2009): 257–63. http://dx.doi.org/10.1016/j.jastp.2008.11.012.

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41

Hollandsworth, Stacey M., Kenneth P. Bowman, and Richard D. McPeters. "Observational study of the quasi-biennial oscillation in ozone." Journal of Geophysical Research 100, no. D4 (1995): 7347–61. http://dx.doi.org/10.1029/95jd00193.

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42

Coy, Lawrence, Paul A. Newman, Steven Pawson, and Leslie R. Lait. "Dynamics of the Disrupted 2015/16 Quasi-Biennial Oscillation." Journal of Climate 30, no. 15 (2017): 5661–74. http://dx.doi.org/10.1175/jcli-d-16-0663.1.

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A significant disruption of the quasi-biennial oscillation (QBO) occurred during the Northern Hemisphere (NH) winter of 2015/16. Since the QBO is the major wind variability source in the tropical lower stratosphere and influences the rate of ascent of air entering the stratosphere, understanding the cause of this singular disruption may provide new insights into the variability and sensitivity of the global climate system. Here this disruptive event is examined using global reanalysis winds and temperatures from 1980 to 2016. Results reveal record maxima in tropical horizontal momentum fluxes
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43

Dunkerton, Timothy J. "A Two-Dimensional Model of the Quasi-Biennial Oscillation." Journal of the Atmospheric Sciences 42, no. 11 (1985): 1151–60. http://dx.doi.org/10.1175/1520-0469(1985)042<1151:atdmot>2.0.co;2.

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44

Yoden, Shigeo, and James R. Holton. "A New Look at Equatorial Quasi-Biennial Oscillation Models." Journal of the Atmospheric Sciences 45, no. 19 (1988): 2703–17. http://dx.doi.org/10.1175/1520-0469(1988)045<2703:anlaeq>2.0.co;2.

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45

Kawatani, Yoshio, Kevin Hamilton, and Shingo Watanabe. "The Quasi-Biennial Oscillation in a Double CO2 Climate." Journal of the Atmospheric Sciences 68, no. 2 (2011): 265–83. http://dx.doi.org/10.1175/2010jas3623.1.

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Abstract The effects of anticipated twenty-first-century global climate change on the stratospheric quasi-biennial oscillation (QBO) have been studied using a high-resolution version of the Model for Interdisciplinary Research on Climate (MIROC) atmospheric GCM. This version of the model is notable for being able to simulate a fairly realistic QBO for present-day conditions including only explicitly resolved nonstationary waves. A long control integration of the model was run with observed climatological sea surface temperatures (SSTs) appropriate for the late twentieth century, followed by an
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46

Fendeková, Miriam, Pavla Pekárová, Marián Fendek, Ján Pekár, and Peter Škoda. "Global drivers effect in multi-annual variability of runoff." Journal of Hydrology and Hydromechanics 62, no. 3 (2014): 169–76. http://dx.doi.org/10.2478/johh-2014-0027.

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Abstract Changes in runoff parameters are very important for Slovakia, where stream-flow discharges, being supplied by precipitation and groundwater runoff, are preferentially influenced by climatic conditions. Therefore, teleconnections between runoff parameters, climate parameters and global atmospheric drivers such as North Atlantic Oscillation, Southern Pacific Oscillation, Quasi-biennial oscillation and solar activity were studied in the Nitra River Basin, Slovakia. Research was mostly based on records of 80 years (1931-2010) for discharges and baseflow, and 34 years for groundwater heads
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47

Yao, Weiye, and Christiane Jablonowski. "Idealized Quasi-Biennial Oscillations in an Ensemble of Dry GCM Dynamical Cores." Journal of the Atmospheric Sciences 72, no. 6 (2015): 2201–26. http://dx.doi.org/10.1175/jas-d-14-0236.1.

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Abstract The paper demonstrates that quasi-biennial oscillation (QBO)-like oscillations can be simulated in an ensemble of dry GCM dynamical cores that are driven by a simple Held–Suarez temperature relaxation and low-level Rayleigh friction. The tropical stratospheric circulations of four dynamical cores, which are options in NCAR’s Community Atmosphere Model, version 5 (CAM5), are intercompared. These are the semi-Lagrangian (SLD) and Eulerian (EUL) spectral transform, finite-volume (FV), and spectral element (SE) dynamical cores. The paper investigates how the model design choices impact th
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48

Mayer, Kirsten J., and Elizabeth A. Barnes. "Subseasonal midlatitude prediction skill following Quasi-Biennial Oscillation and Madden–Julian Oscillation activity." Weather and Climate Dynamics 1, no. 1 (2020): 247–59. http://dx.doi.org/10.5194/wcd-1-247-2020.

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Abstract. The Madden–Julian Oscillation (MJO) is known to force extratropical weather days to weeks following an MJO event through excitation of stationary Rossby waves, also referred to as tropical–extratropical teleconnections. Prior research has demonstrated that this tropically forced midlatitude response leads to increased prediction skill on subseasonal to seasonal (S2S) timescales. Furthermore, the Quasi-Biennial Oscillation (QBO) has been shown to possibly alter these teleconnections through modulation of the MJO itself and the atmospheric basic state upon which the Rossby waves propag
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49

Wang, Feiyang, and Lei Wang. "An exploration of the connection between quasi-biennial oscillation and Madden-Julian oscillation." Environmental Research Letters 16, no. 11 (2021): 114021. http://dx.doi.org/10.1088/1748-9326/ac3031.

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50

Marshall, Andrew G., Harry H. Hendon, Seok-Woo Son, and Yuna Lim. "Impact of the quasi-biennial oscillation on predictability of the Madden–Julian oscillation." Climate Dynamics 49, no. 4 (2016): 1365–77. http://dx.doi.org/10.1007/s00382-016-3392-0.

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