Transformation of the characteristics of quasi-biennial oscillation in a new version of the series of Wolf (relative sunspot) numbers

With the introduction from June 2015 of a new methodology for estimation of Wolf numbers W (or WSN — Wolf sunspot number), this series was corrected from January 1749 to May 2015, i.e. a new version of the series WSN was proposed. The greatest transformation affected the cycles of a statistically reliable part of the series (since, 1849), which was clearly reflected in their amplitude correction and, accordingly, in the long-period component of the series, determining the epoch of maximum/minimum solar activity. The quasi-biennial oscillations available in the solar magnetic field and in the total flux of its radiation also manifest themselves in a number of parameters of the Earth ionosphere and evaluation of their transformation degree is of high significance. This paper compares the characteristics of the frequency interval of the quasi-biennial oscillations of both versions of a series.

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Large Scale Solar Magnetic Fields: Temporal Variations

Symposium - International Astronomical Union ◽

10.1017/s0074180900182580 ◽

2004 ◽

Vol 219 ◽

pp. 552-556 ◽

Cited By ~ 4

Author(s):

R. Knaack ◽

J. O. Stenflo

Keyword(s):

Magnetic Field ◽

Time Series ◽

Large Scale ◽

Solar Magnetic Field ◽

Temporal Variations ◽

Solar Photosphere ◽

Solar Cycles ◽

Radial Magnetic Field ◽

Quasi Biennial Oscillation ◽

Harmonic Decomposition

We have investigated the temporal evolution of the solar magnetic field during solar cycles 20, 21 and 22 by means of spherical harmonic decomposition and subsequent time series analysis. A 33 yr and a 25 yr time series of daily magnetic maps of the solar photosphere, recorded at the Mt. Wilson and NSO/Kitt Peak observatories respectively, were used to calculate the spherical coefficients of the radial magnetic field. Fourier and wavelet analysis were then applied to deduce the temporal variations. We compare the results of the two datasets and present examples of zonal modes which show significant variations, e. g. with a period of approx. 2.0—2.5 years. We provide evidence that this quasi-biennial oscillation originates mainly from the southern hemisphere. Furthermore, we show that low degree modes with odd l — m exhibit periods of 29.2 and 28.1 days while modes with even l — m show a dominant period of 26.9 days. A resonant modal structure of the solar magnetic field (apart from the 22 yr cycle) has not been found.

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Quasi-biennial oscillation influence on long-period planetary waves in the Antarctic upper mesosphere

Journal of Geophysical Research Atmospheres ◽

10.1029/2008jd011174 ◽

2009 ◽

Vol 114 (D9) ◽

Cited By ~ 25

Author(s):

R. E. Hibbins ◽

M. J. Jarvis ◽

E. A. K. Ford

Keyword(s):

Planetary Waves ◽

Quasi Biennial Oscillation ◽

Long Period ◽

The Antarctic ◽

Biennial Oscillation

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An Overview of Climatic Variability and its Causal Mechanisms

Quaternary Research ◽

10.1016/0033-5894(76)90021-1 ◽

1976 ◽

Vol 6 (4) ◽

pp. 481-493 ◽

Cited By ~ 217

Author(s):

J. Murray Mitchell

Keyword(s):

Climatic Change ◽

Time Scales ◽

Climatic Variability ◽

Quasi Biennial Oscillation ◽

Significant Events ◽

The Earth ◽

Climatic System ◽

Biennial Oscillation ◽

Modest Degree ◽

Variance Spectrum

A variance spectrum of climatic variability is presented that spans all time scales of variability from about one hour (10−4 years) to the age of the Earth (4 × 109 years). An interpretive overview of the spectrum is offered in which a distinction is made between sources of variability that arise through stochastic mechanisms internal to the climatic system (atmosphere-ocean-cryosphere) and those that arise through forcing of the system from the outside. All identifiable mechanisms, both internal and external, are briefly defined and clarified as to their essential nature. It is concluded that most features of the spectrum of climatic variability can be given tentatively reasonable interpretations, whereas some features (in particular the quasi-biennial oscillation and the neoglacial cycle of the Holocene) remain fundamentally unexplained. The overall spectrum suggests the existence of a modest degree of deterministic forms of climatic change, but sufficient nonsystematic variability to place significant constraints both on the extent to which climate can be predicted, and on the extent to which significant events in the paleoclimatic record can ever manage to be assigned specific causes.

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The mean solar magnetic field as an indicator of the interplanetary magnetic field

Annals of Geophysics ◽

10.4401/ag-4003 ◽

1996 ◽

Vol 39 (4) ◽

Author(s):

J. Bremer

Keyword(s):

Magnetic Field ◽

Interplanetary Magnetic Field ◽

Structure Data ◽

Solar Magnetic Field ◽

Private Communication ◽

Sector Structure ◽

Ionospheric Effect ◽

Ionospheric Response ◽

The Earth ◽

The Mean

The Mean Solar Magnetic Field (MSMF) measured daily by ground based observations at the Standford Observatory shows similar structures like the Interplanetary Magnetic Field (IMF) near the Earth about 5 to 7 days later. The ionospheric effect in the mid-latitude F2-region due to such MSMF changes is most marked for strong MSMF changes from anti to pro sectors. The mean ionospheric response is very similar to the results obtained earlier with IMF sector structure data derived from Svalgaard (1976) and Wilcox (1982, private communication). Therefore, the MSMF data can successfully be used to predict the mean IMF sector structure and the mean ionospheric response 5 to 7 days in advance.

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Solar Variability

The Sun's Influence on Climate ◽

10.23943/princeton/9780691153834.003.0005 ◽

2015 ◽

Author(s):

Joanna D. Haigh ◽

Peter Cargill

Keyword(s):

Magnetic Field ◽

Solar Cycle ◽

Temporal Variation ◽

Uv Radiation ◽

First Principles ◽

Solar Minimum ◽

Solar Magnetic Field ◽

Solar Variability ◽

The Earth ◽

Dynamo Process

This chapter studies the solar atmosphere's temporal variation, particularly the reverse in polarity of the solar magnetic field roughly every 11 years—a complete solar cycle occurs approximately every 22 years. The reason for this reversal must lie in the dynamo process operating at the tachocline, though a complete explanation is still awaited. This lack of understanding also underlies the scholars' inability to predict, on a first-principles basis, events like the recent deep and prolonged solar minimum. From the viewpoint of radiative input to the Earth, the chapter is interested in the variability of visible and UV radiation both across a typical solar cycle and, longer term, over many cycles. It also discusses how various solar and interplanetary parameters vary relative to the solar cycle.

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A new comparative scale between tropopause height and beryllium 7 and the weight of quasi-biennial oscillation (QBO) effect.

10.5194/egusphere-egu2020-7978 ◽

2020 ◽

Author(s):

Lucrezia Terzi ◽

Gerhard Wotawa ◽

Paul W. Staten ◽

Lan Luan ◽

Axel Gabriel ◽

...

Keyword(s):

Climate Change ◽

Magnetic Field ◽

Solar Flux ◽

Jet Stream ◽

Tropopause Height ◽

Quasi Biennial Oscillation ◽

Earth Magnetic Field ◽

Biennial Oscillation ◽

Height Data ◽

Seasonal Weather

Recent studies demonstrated how accurate beryllium 7 can be used as proxy to predict seasonal weather, in particular Indian monsoons, climate change patterns such as tropopause height changes, tropopause breathing and Jet Stream stalling.Beryllium 7 studies also prove that climate change phenomena are not driven by solar flux or earth magnetic field but are only partially influenced by them.In this work we will compare recent tropopause height data with Beryllium 7 in order to build a comparative scale between the 2 parameters, including a focus on QBO (quasi-biennual oscillation) to quantify the effect of QBO on the analysed beryllium 7 data.

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Satalitic Magnetospheric Catalyzation

JOURNAL OF ADVANCES IN PHYSICS ◽

10.24297/jap.v13i5.6115 ◽

2017 ◽

Vol 13 (4) ◽

pp. 4908-4909

Author(s):

Jessie Ward

Keyword(s):

Magnetic Field ◽

Solar Magnetic Field ◽

The Sun ◽

The Core ◽

The Earth

This theory states that in crossing between the Earth and the Sun (non-eclipse), charged molecules absorb the Solar Magnetic Field, creating an oscillation in its intensity that pushes Electrons in the core of our planet, producing a Magnetosphere.

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