[M-GI37] Earth and planetary informatics with huge data management

[MGI37-01] Study on the upper atmosphere by the IUGONET project

*Yoshimasa TANAKA¹, Atsuki SHINBORI², Shuji ABE³, Yukinobu KOYAMA⁴, Norio UMEMURA⁵, Manabu YAGI⁶, Satoru UENO⁷ (1.National Institute of Polar Research, 2.Research Institute for Sustainable Humanosphere (RISH), Kyoto University, 3.International Center for Space Weather Science and Education, Japan, 4.Data Analysis Center for Geomagnetism and Space Magnetism, Kyoto University, 5.Solar-Terrestrial Environment Laboratory, Nagoya University, 6.Planetary Plasma and Atmospheric Research Center, Graduate School of Science, Tohoku University, 7.Kwasan & Hida Observatories, School of Science, Kyoto University)

Keywords:IUGONET, upper atmosphere, metadata database, data analysis software, long-term data, interdisciplinary study

Upper atmosphere is characterized by the following properties: (1) It is necessary to consider both vertical couplings between the multiple spheres such as the magnetosphere, ionosphere, and neutral atmosphere, and global horizontal circulation. (2) There are many kinds of physical quantities to be measured. (3) The long-term data analysis is required. The IUGONET (Inter-university Upper atmosphere Global Observation NETwork) project was established in FY2009 as a six-year research project to investigate the mechanism of the long-term variation in the upper atmosphere. We have developed metadata database for cross-searching various kinds of ground-based observational data of the upper atmosphere obtained by the IUGONET members (i.e., National Institute of Polar Research, Tohoku University, Nagoya University, Kyoto University, and Kyushu University) and analysis software for visualizing and analyzing these data. More than 10 million metadata have been registered to our metadata database and can be used for the cross-search. We adopted SPASE (Space Physics Archive Search and Extract) metadata model as a basis of the IUGONET metadata format, which is used for describing the elements of the space and solar physics, so it is easy to add the satellite data to our database in the future. The IUGONET data analysis software is based on SPEDAS (Space Environment Data Analysis Software). The SPEDAS is a set of routines written in IDL (Interactive Data Language) to visualize and analyze data obtained by many satellites, e.g., ACE, WIND, GOES, THEMIS, and Van Allen Probes, and various ground-based observational data. A plug-in software for SPEDAS developed by the IUGONET enables users to deal with the upper atmosphere data provided by the IUGONET members on the SPEDAS. In the presentation, we will introduce some research results from the IUGONET project and discuss the issues in data analysis of the upper atmosphere.