Skip to main content
SpringerLink
Log in

Correlation Between Decay Rate and Amplitude of Solar Cycles as Revealed from Observations and Dynamo Theory

  • Published:
Solar Physics Aims and scope Submit manuscript

Abstract

Using different proxies of solar activity, we have studied the following features of the solar cycle: i) The linear correlation between the amplitude of cycle and its decay rate, ii) the linear correlation between the amplitude of cycle \(n\) and the decay rate of cycle \((n - 1)\), and iii) the anti-correlation between the amplitude of cycle \(n\) and the period of cycle \((n - 1)\). Features ii) and iii) are very useful because they provide precursors for future cycles. We have reproduced these features using a flux-transport dynamo model with stochastic fluctuations in the Babcock–Leighton \(\alpha\) effect and in the meridional circulation. Only when we introduce fluctuations in meridional circulation, are we able to reproduce different observed features of the solar cycle. We discuss the possible reasons for these correlations.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10

Similar content being viewed by others

Notes

  1. http://solarscience.msfc.nasa.gov/greenwch/spot_num.txt .

  2. http://solarscience.msfc.nasa.gov/greenwch/sunspot_area.txt .

  3. http://www.ngdc.noaa.gov/stp/solar/flux.html .

References

Download references

Acknowledgements

This work is partly supported by DST through the J.C. Bose Fellowship awarded to ARC. GH thanks CSIR, India for financial support. We thank an anonymous referee for a careful reading and for providing constructive comments that helped to improve the quality of the article.

Author information

Authors and Affiliations

  1. Department of Physics, Indian Institute of Science, Bangalore, 560012, India

    Gopal Hazra & Arnab Rai Choudhuri

  2. Nordita KTH Royal Institute of Technology and Stockholm University, Roslagstullsbacken 23, 106 91, Stockholm, Sweden

    Bidya Binay Karak

  3. Indian Institute of Astrophysics, Bangalore, 560034, India

    Gopal Hazra & Dipankar Banerjee

Authors
  1. Gopal Hazra
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Bidya Binay Karak
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Dipankar Banerjee
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Arnab Rai Choudhuri
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Gopal Hazra.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Hazra, G., Karak, B.B., Banerjee, D. et al. Correlation Between Decay Rate and Amplitude of Solar Cycles as Revealed from Observations and Dynamo Theory. Sol Phys 290, 1851–1870 (2015). https://doi.org/10.1007/s11207-015-0718-8

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11207-015-0718-8

Keywords

Search

Navigation