电波科学学报2024，Vol.39Issue(2)：253-261,9.DOI:10.12265/j.cjors.2023060
基于COSMIC掩星观测的顶部电离层标高特征分析
Characterization of topside ionospheric scale height based on COSMIC occultation observations
摘要
Abstract
The topside ionosphere is the region of the ionosphere above the altitude where the F2 layer electron density maximum is located.Occultation observations can provide the entire ionospheric electron density profile from the ground to the orbital altitude of LEO satellites,which is important for the study of the topside ionosphere.The topside scale height is an important parameter for the construction of the ionospheric electron density profile model above the top.In this paper,we extract the top scale height of the effective electron density profile data using the constellation observing system for meteorology,ionosphere and climate(COSMIC)occultation observations from 2007 to 2020,analyze its characteristics with local time,season,latitude,longitude,and solar activity level.The results show that:the topside scale height has obvious daily and seasonal variation patterns and shows strong dependence on solar activity;the latitudinal variation of the topside scale height is strongly dependent on the local time and shows a distinct wave structure in the east-west longitude direction,which has different morphologies in the northern and southern hemispheres;the topside scale height has a significant east-west longitudinal difference in the summer hemisphere,more pronounced in the southern hemisphere in summer.关键词
COSMIC掩星/顶部电离层/电子密度剖面/太阳活动/标高Key words
COSMIC occultation/topside ionosphere/electron density profile/solar activity/scale height分类
天文与地球科学引用本文复制引用
韩超,白培瑞,庞岗,靳睿敏,甄卫民,王丹丹,马雪纯,朱庆林,陈龙江,陈丽..基于COSMIC掩星观测的顶部电离层标高特征分析[J].电波科学学报,2024,39(2):253-261,9.基金项目
国家重点研发计划(2022YFF0503900) （2022YFF0503900）
国家自然科学基金(62201326) （62201326）
山东省自然科学基金(ZR2022QF056) （ZR2022QF056）
