The GUMICS-4 global MHD magnetosphere-ionosphere coupling simulation

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• 作者：P. Janhunen^a ; ^{pekka.janhunen@fmi.fi} ; M. Palmroth^a ; T. Laitinen^a ; I. Honkonen^a ; ^b ; L. Juusola^a ; G. Facskó ; ^a ; ^c ; T.I. Pulkkinen^d
• 关键词：Magnetosphere ; Modelling ; Global MHD simulation ; Numerical simulation
• 刊名：Journal of Atmospheric and Solar-Terrestrial Physics
• 出版年：2012
• 期刊代码：41_13646826
• 类别：ear
• 出版时间：May, 2012
• 卷：80
• 期：Complete
• 页码：48-59
• 文件大小：1767 K

摘要

GUMICS-4 is a global magnetosphere-ionosphere coupling simulation based on global MHD magnetosphere and an electrostatic ionosphere. Here we review the development history, design and technical features of GUMICS-4 as well as a number of its postprocessing tools. We also compare GUMICS-4 predictions with observations for magnetopause distance, interplantary magnetic field penetration in the magnetotail, ionospheric field-aligned current pattern and other quantities. Based on the comparisons we can conclude that to a useful extent and with certain limitations, GUMICS-4 can reveal the detailed spatiotemporal behaviour of the magnetosphere-ionosphere system under given solar wind forcing.