21、22、23太阳活动周上升期太阳黑子资料的分析

THE ANALYSIS OF THE DATA OF SUNSPOTS DURING THE ASCENDING PHASES OF THE SOLAR CYCLES 21、22、23

本文分析了第２１ 、２２ 、２３ 太阳活动周的上升期２３ 个月（ 月均值） 太阳黑子资料。结果表明：太阳黑子相对数和面积南北不对称。２３ 周的太阳黑子相对数和面积（２３ 个月的平均） 高于２２ 周，但低于２１ 周。我们估计第２３ 周峰年为２０００ 年３ 月或１９９９ 年１２ 月。

The data of sunspots of 23 months (monthly mean values )during the ascending phases of the Solar Cycles 21、22、23 are analysed in this paper. The results indicate the existence of a north south asymmetry of the sunspot distribution. The sunspot relative number and the sunspot area (average of 23 months) of the Solar Cycle 23 are higher than the Solar Cycle 22, but lower than the Solar Cycle 21. It is estimated that the peak year of the Solar Cycle 23 would be in March, 2000 or December, 1999.