空间科学学报2024，Vol.44Issue(1)：60-70,11.DOI:10.11728/cjss2024.01.2023-0130
全球电离层峰值参数的季节变化
Seasonal Variations of Global Ionospheric NmF2 and hmF2
摘要
Abstract
The seasonal variations of global ionospheric NmF2 and hmF2 have been analyzed by using the monthly COSMIC ionospheric data from 2006 to 2019 and wavelet analysis method.The results show that the ionospheric NmF2 and hmF2 are significantly different with local time,season and latitude.The ionospheric peak parameters have positive correlation with the solar activity,and their correlation coefficients are above 0.9 and 0.8,respectively.The ionospheric NmF2 at noon exists significantly annual and semiannual variations,especially under the high solar activity conditions.However,the annual vari-ation of ionospheric NmF2 has been mainly observed at nighttime.Meanwhile,the annual variation of ionospheric hmF2 at noon is significant in all years,but almost absent during midnight.Additionally,and the seasonal variations of ionospheric NmF2 and hmF2 in the southern hemisphere are more obvious than that in the northern hemisphere.Additionally,the seasonal variations of ionospheric peak parameters are more significant during high solar activity years.Moreover,there seem to be periodic signals of 25～35 months in the solar activity index and ionospheric peak parameters,but their power spectrum are not greater than 95%significance level,and we thought that the ionosphere would be not affected by the QBO signal.关键词
电离层峰值电子密度/电离层峰值高度/年变化/半年变化Key words
Ionospheric NmF2/Ionospheric hmF2/Annual variation/Semiannual variation分类
天文与地球科学引用本文复制引用
李波,崔瑞飞,翁利斌..全球电离层峰值参数的季节变化[J].空间科学学报,2024,44(1):60-70,11.基金项目
国家重点研发计划项目(2023YFC2808900),国家自然科学基金项目(42104162)和湖南省自然科学基金项目(2021JJ40670)共同资助 （2023YFC2808900）
