Development of a high-resolution whole atmosphere-ionosphere model to reproduce ionospheric phenomena with spatial scale of several 100km

2015 Fiscal Year Final Research Report

• Project/Area Number: 24740336
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Space and upper atmospheric physics
• Research Institution: National Institute of Information and Communications Technology
• Principal Investigator: Jin Hidekatsu 国立研究開発法人情報通信研究機構, 電磁波計測研究所宇宙環境インフォマティクス研究室, 主任研究員 (60466240)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 超高層大気 / シミュレーション / 中層大気 / 電離圏 / 宇宙天気 / 計算科学 / 成層圏突然昇温 / 熱圏

Outline of Final Research Achievements

We have developed a whole atmosphere-ionosphere coupled model, GAIA. In this study, we improve the resolution and numerical treatment of the model in order to utilize it for numerical prediction of the upper atmosphere, especially improving the numerical scheme for the dynamics of and thermal diffusion of ionospheric plasma along geomagnetic field lines. We also carry out a long-term simulation of GAIA, and compare its output with observations and other model outputs. The improved model can reproduce finer ionospheric structures with spatial scale of several 100km, so it can be used for the analysis of such small scale ionospheric phenomena.

Free Research Field

超高層大気科学