Long-Term Variations of the Solar Supergranulation Size According to the Observations in CaIIK Line

  • A. G. Tlatov
Conference paper
Part of the Astrophysics and Space Science Proceedings book series (ASSSP, volume 30)


This work contains analysis of distinctive size of chromospheric cells Kodaikanal (1907–1999) and Medon (1983–2010). At first the contrast of chromospheric grid was enlarged on image, by means of subtraction of the gradient from the solar disc intensity. This analysis was performed with the help of balanced wavelet transformation. It was discovered that distinctive size of chromospheric cells is close to 36Mm but it has variations,in the phase of solar activity ∼1, 2Mm maximal size of the cell can be seen as a rule, in ∼1, 5 year after maximum of the solar activity. There is a positive correlation (R = 0, 83) between the size of the chromospheric cells in maximum and the amplitude of the following activity cycle. Thus, the size of the supergranulation is connected with the solar activity and is ahead of it ∼8, 8 of a year.


Solar Activity Activity Cycle Solar Disc Central Meridian Maximal Distribution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The work was supported by Russian Foundation for Basic Research and Russian Academy of Sciences.


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© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Kislovodsk mountian astronomical station of the Pulkovo observatoryKislovodskRussia

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