Use of a Global Effective Sunspot Number IG12 for Long-term Ionospheric Predictions
-
摘要: 本文利用中国电离层垂直探测站的资料研究应用全球等效太阳黑子数IG12进行电离层长期预报的可能性.结果表明, 指数IC12与电离层特性参数（f0F2或F2（3000）MUF）的相关性比太阳黑子数R12与电离层特性参数的要好.利用CCIR第340号报告, 对IG12应用于预报f0F2、M（3000）F2和F2（4000）MUF的功效进行了估算, 并与目前使用的R12进行了比较.所得结果表明, 在用CCIR预报方法时, 用IG12代替R12可以得到精度更高的预报值.对提前12个月的预报, f0F2和F2（4000）MUF的预报精度分别平均提高18%和10%左右.对IG12指数用于预报的其他优点亦进行了讨论.Abstract: The possibility of the use of a global effective sunspot number IG12 for long-term ionospheric predictions is investigated in this paper based on the data of vertical incidence sounding stations in China. It is shown that the relationship between the ionos-pherically-derived index IG12 and the ionospheric characteristic (f0F2 or F2(3000)MUF) is better than that between sunspot number R12 and the ionospheric characteristic.The efficacy of the use of IG12 for predicting f0F2, M(3000)F2 and F, (4000)MUFis evaluated, using CCIR Report 340, by comparison with R12 in current use. The evidence presented shows that the use of IG12 instead of R12 in the CCIRprediction scheme yields more accurate values of f0F2 and F2(4000)MUF. In the predictions of f0F2 and -F2(4000)MUF 12-month in advance. The average improvments in accuracy are about 18% and 10% respectively. Other advantages arising from the use of the IG12 index are also discussed.
-
-
计量
- 文章访问数: 2401
- HTML全文浏览量: 116
- PDF下载量: 1035
-
被引次数:
0(来源:Crossref)
0(来源:其他)
下载:
