日本地球惑星科学連合2018年大会

講演情報

[EE] ポスター発表

セッション記号 P (宇宙惑星科学) » P-EM 太陽地球系科学・宇宙電磁気学・宇宙環境

[P-EM14] Recent Advances in Ionosphere Observation and Modeling for Monitoring and Forecast

2018年5月24日(木) 10:45 〜 12:15 ポスター会場 (幕張メッセ国際展示場 7ホール)

コンビーナ:Lin Charles(Department of Earth Sciences, National Cheng Kung University)、Yang-Yi Sun(China University of Geosciences, Institute of Geophysics and Geomatics)

[PEM14-P01] The driven parameters of the NCAR/TIE-GCM at high latitudes assimilated with the occultation TEC during the storm time

*Ming-Quey Chen1Yung-Chih Su (1.Graduate Institute of Space Science, National Central University)

The Thermosphere-Ionosphere Electrodynamics General Circulation Model (TIE-GCM) are assimilated with the FORMOSAT-3 occultation total electron contents (OTEC) to optimize the model driven parameters that the simulation results could monitor the ionosphere during the magnetic storm time. The TIE-GCM was developed by NCAR/HAO is a self-consistently electrodynamics coupled thermosphere and ionosphere model. The model could be driven by a few parameters such as the y-component of Interplanetary Magnetic Field (IMF-By) and the Cross Polar Cap Potential (CPCP) that control the ion convection at high latitudes. We assimilated the OTEC data along the line of sight from GPS to LEO satellites measured by the FORMOSAT-3 with the TIE-GCM such that both the optimal IMF-By and CPCP could be obtained in the storm time. The 3-hours assimilation cycle are constructed to study the geo-magnetic storm in the day Sep. 09, 2011. The pre-3-hours OTEC data before the beginning of a time cycle are assimilated with TIE-GCM to optimize the parameters of IMF-By and CPCP that optimized the initial state of the cycle. The post-1-hour OTEC data after the initial state are assimilated with TIE-GCM to optimize the IMF-By and CPCP to monitor the ionosphere in forward 3-hours. The simulation results and the optimal IMF-By, CPCP could be compared with the observation data in the ionosphere and the values in the geophysical indices database (GPI).