Peculiar behavior of solar polar fields during solar cycles 21-23: Correlation with meridional flow speed

We have examined solar polar fields during the solar cycles 21–23 using both ground and space based synoptic magnetograms. It has been shown that the unsigned polar fields in the latitude range (78°–90°) show a steady decline starting ~1995–1996 till the maximum of cycle 23. We also find that the lo...

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Bibliographic Details
Published inProceedings of the International Astronomical Union Vol. 8; no. S294; pp. 81 - 82
Main Authors Bisoi, Susanta Kumar, Janardhan, P.
Format Journal Article
LanguageEnglish
Published Cambridge, UK Cambridge University Press 01.08.2012
Subjects
Contributed Papers
Magnetic fields
Solar cycle
Solar physics
Turbulent flow
India
and Meridional flow
Solar cycle
Sun: magnetic fields
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Summary:We have examined solar polar fields during the solar cycles 21–23 using both ground and space based synoptic magnetograms. It has been shown that the unsigned polar fields in the latitude range (78°–90°) show a steady decline starting ~1995–1996 till the maximum of cycle 23. We also find that the long term changes in the unsigned polar fields at higher latitudes are well correlated with changes in the surface meridional flow speed that have been reported for the cycle 23.
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ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921313002287