Japan Geoscience Union Meeting 2016

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International Session (Poster)

Symbol P (Space and Planetary Sciences) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM04] Space Weather, Space Climate, and VarSITI

Sun. May 22, 2016 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Ryuho Kataoka(National Institute of Polar Research), Antti Pulkkinen(NASA GSFC), Yusuke Ebihara(Research Institute for Sustainable Humanosphere, Kyoto University), Yoshizumi Miyoshi(Institute for Space-Earth Environmental Research, Nagoya University), Toshifumi Shimizu(Institute of Space and Astronautical Science, JAXA), Ayumi Asai(Unit for Synergetic Studies of Space, Kyoto University), Hidekatsu Jin(National Institude of Information and Communications Technology), Tatsuhiko Sato(Japan Atomic Energy Agency), Kanya Kusano(Institute for Space-Earth Environmental Research, Nagoya University), Hiroko Miyahara(College of Art and Design, Musashino Art University), Kiminori Itoh(Graduate School of Engineering, Yokohama National University), Kazuo Shiokawa(Institute for Space-Earth Environmental Research, Nagoya University), Takuji Nakamura(National Institute of Polar Research), Shigeo Yoden(Division of Earth and Planetary Sciences, Graduate School of Science, Kyoto University), Kiyoshi Ichimoto(Kwasan and Hida Observatories, Kyoto University), Mamoru Ishii(National Institute of Information and Communications Technology)

5:15 PM - 6:30 PM

[PEM04-P15] Studies of the thermosphere and ionosphere with the EISCAT radar and whole atmosphere/ionosphere model: GAIA

*Hitoshi Fujiwara1, Yasunobu Miyoshi2, Hidekatsu Jin3, Hiroyuki Shinagawa3, Satonori Nozawa4, Yasunobu Ogawa5, Ryuho Kataoka5, Huixin Liu2 (1.Faculty of Science and Technology, Seikei University, 2.Department of Earth and Planetary Sciences, Faculty of Sciences, Kyushu University, 3.National Institute of Information and Communications Technology, 4.Institute for Space-Earth Environment Research, Nagoya University, 5.National Institute of Polar Research)

Keywords:thermosphere, ionosphere, GAIA, EISCAT

The thermosphere/ionosphere is the region that shows both the features of the atmosphere
and space. For example, the behaviors of the neutral and ionized gases characterize
the region through some collision and radiative processes. In addition, interactions between
neutral and ionized gases cause various phenomena in the thermosphere/ionosphere.
The thermosphere/ionosphere is also important for radio wave propagation and operation
of artificial satellites due to the atmospheric drag force. The accuracy of navigation systems
and life time of the satellites depend strongly on the thermospheric/ionospheric conditions.
In order to investigate the thermosphere/ionosphere, we have developed a numerical model
which includes all the atmospheric regions and ionosphere named GAIA. GAIA has reproduced
some thermospheric/ionospheric phenomena and revealed physical mechanisms in association with
the phenomena. In this study, we present a brief description of GAIA and show some recent
results. The collaboration with radar observations enables the GAIA simulations to be more
productive. We will show some European incoherent scatter (EISCAT) radar observations in
cooperation with GAIA simulations. The future plans of the EISCAT observations and GAIA
simulations will be also shown here.