Online computation of International Reference Ionosphere Extended to Plasmasphere(IRI-Plas) model for space weather

作     者：Umut Sezen T.L.Gulyaeva Feza Arikan 

作者机构：Department of Electrical and Electronics Engineering Hacettepe University IZMIRAN 

出 版 物：《Geodesy and Geodynamics》 (大地测量与地球动力学（英文版）)

年 卷 期：2018年第9卷第5期

页      面：347-357页

学科分类：0709[理学-地质学] 070802[理学-空间物理学] 07[理学] 0707[理学-海洋科学] 0708[理学-地球物理学] 0705[理学-地理学] 0815[工学-水利工程] 0825[工学-航空宇航科学与技术] 0704[理学-天文学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the grant of TUBITAK 115E915 

主　　题：Ionosphere Space weather IRI-Plas GPS TEC IONOLAB 

摘      要：Ionosphere is the most challenging part of Space Weather with its spatio-temporal variability and dispersive nature. Ionospheric models are very important in reducing positioning error in GNSS *** Reference Ionosphere(IRI) is an empirical, deterministic and climatic model of ionosphere up to 2000 km in height. Recently, IRI Extended to Plasmasphere(IRI-Plas) model has been developed to extend the interest region of IRI to the GPS orbital height of 20,000 km. Both IRI and IRI-Plas provide ionospheric parameters such as electron density, electron and ion temperatures according to their height profiles. In order to update the model to current ionospheric conditions, IRI-Plas can input F2 layer critical frequency(foF2), maximum ionization height(hmF2), and also Total Electron Content(TEC).Online IRI-Plas is developed for the ionospheric community to run multiple tasks at various locations,dates and times with optional foF2, hmF2 and TEC inputs in a user-friendly manner. In this paper, we are going to present the capabilities of the Online IRI-Plas service and provide some comparisons between IRI-Plas outputs and ionosonde measurements. The comparison between online IRI-Plas foF2 outputs and ionosonde foF2 measurements indicates that the model with TEC input can significantly improve the representation of the current ionospheric state, which is very successful especially in the geomagnetically disturbed days.