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- W4320912009 abstract "地磁Ap指数是描述全球地磁活动水平的重要指数, 过去许多参考大气模式中都用Ap指数来表述地磁活动状态, 大气模式的运行需要输入地磁Ap指数, 因此, 地磁Ap指数的预报一直是空间环境预报中一个非常重要的内容. 针对太阳活动低年冕洞引起的地磁扰动具有明显27天重现的特性, 利用修正的自回归方法, 对地磁Ap指数进行了提前27天的预报; 采用从SOHO/EIT观测资料发展出来的描述冕洞特性的Pch因子, 进行了提前三天的地磁Ap指数预报. 结果显示, 将统计方法与物理分析相结合, 进行地磁Ap指数的中短期数值预报, 可以得到较好的预报效果." @default.
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- W4320912009 date "2009-01-01" @default.
- W4320912009 modified "2023-09-29" @default.
- W4320912009 title "Medium and Short Term Forecasting of Ap Related to Coronal Holes" @default.
- W4320912009 doi "https://doi.org/10.11728/cjss2009.06.545" @default.
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