极区电离层N_(m)F_(2)观测与国际参考电离层对比研究  

Comparison of polar region ionospheric N_(m)F_(2)observations with the Interna-tional Reference Ionosphere

作　　者：徐盛 李培豪 廖小倩 刘瑞源 陈相材 XU Sheng;LI Peihao;LIAO Xiaoqian;LIU Ruiyuan;CHEN Xiangcai(College of Computer and Communication Engineering,Zhengzhou University of Light Industry,Zhengzhou 450000,China;Key Laboratory of Polar Science,MNR,Polar Research Institute of China,Shanghai 200136,China)

机构地区：[1]郑州轻工业大学计算机与通信工程学院,河南郑州450000 [2]自然资源部极地科学重点实验室,中国极地研究中心(中国极地研究所),上海200136

出　　处：《极地研究》2024年第1期26-36,共11页Chinese Journal of Polar Research

基　　金：国家自然科学基金项目(41804155,42130210,42120104003);上海市科技创新行动计划(21DZ1206100)资助。

摘　　要：利用南北极极隙区与极光带纬度3个台站对电离层F2层峰值电子密度(N_(m)F_(2))长达1个太阳活动周的观测数据,对国际参考电离层IRI-2016模型在极区的适用性进行系统的定量研究。结果表明,在极光带纬度的北极Tromsø站,IRI预测与观测符合最好,大部分季节相对误差在40%以内,在太阳活动高年略好于太阳活动低年。在极隙区纬度的南极中山站和Longyearbyen站,IRI预测精度在太阳活动低年高于太阳活动高年。在中山站和北极Longyearbyen站仅个别月份相对误差在20%以内,大部分月份相对误差超过40%,冬季相对误差接近100%,特别是Longyearbyen站,在太阳活动高年冬季相对误差超过100%。从季节上看,3个台站都是冬季符合最差,夏季符合最好。IRI-2016模型对极区电离层进行预测时,难以如实反映极区等离子体对流和能量粒子沉降等极区特有的物理过程对极区电离层N_(m)F_(2)的影响。This article systematically and quantitatively explores the applicability of the International Reference Iono-sphere IRI-2016 model in polar regions,using observation data of the ionospheric F2-layer peak electron density(N_(m)F_(2))acquired one solar cycle at three stations within the polar cusp region and the latitude of the aurora belt.The results showed good consistency between the IRI-2016 predictions and observation at the auroral latitude TromsøStation,with relative errors less than 40%in most seasons.The accuracy of IRI-2016 prediction was marginally higher during solar maximum years than during solar minimum years at Tromsø,conversely it was higher during solar minimum years than during solar maximum years at the Zhongshan and Longyearbyen stations.At Zhongshan and Longyearbyen stations,the relative error is less than 20%in only a few months,more than 40%in most months,and is almost 100%in winter.Especially at Longyearbyen Station,the relative error is more than 100%in winter during solar maximum years.Overall consistency between observations and IRI-2016 prediction perform was low-est in winter,and highest in summer at all three stations.Plasma convection strongly influences N_(m)F_(2)and particle precipitation in the polar regions,but the IRI-2016 model could not accurately reproduce these physical processes.

关 键 词：极区电离层 国际参考电离层 IRI-2016模型 F2层峰值电子密度(N_(m)F_(2)) 

分 类 号：P352[天文地球—空间物理学]