Solar activity forecast for solar cycle 23

被引:76
作者
Schatten, K [1 ]
Myers, DJ [1 ]
Sofia, S [1 ]
机构
[1] YALE UNIV,DEPT ASTRON,NEW HAVEN,CT 06511
关键词
D O I
10.1029/96GL00451
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
In this paper, we predict the next cycle's activity and improve the timing of solar cycle predictions. Dynamo-based solar activity prediction techniques rely upon two properties inherent in the solar cycle: that solar magnetism oscillates between poloidal and toroidal components; and that there is a degree of ''magnetic persistence'' in dynamos, which in the cask of the Sun, results in the dependence of many magnetic related quantities (activity related quantities) upon the amount of magnetism embedded below the Sun's surface. Using the SODA (SOlar Dynamo Amplitude) index as a measure of magnetic persistence, we predict that solar cydle # 23 will reach a mean smoothed F10.7 peak of 182 +/- 30 solar flux units (sfu) and a mean sunspot number Rz of 138 +/- 30. This is particularly intriguing because the ''folklore'' is that odd cycles are larger than the preceding even cycle. Additionally, by tracking the equatorward march of solar activity, the timing of the cycle can be better estimated. From this, we estimate that the next solar maximum will occur near May, 2000 +/- 9 months.
引用
收藏
页码:605 / 608
页数:4
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