Japan Geoscience Union Meeting 2014

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International Session (Oral)

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

[P-EM06_30PM1] Study of coupling processes in Sun-Earth system with large radars and large-area observations

Wed. Apr 30, 2014 2:15 PM - 4:00 PM 312 (3F)

Convener:*Mamoru Yamamoto(Research Institute for Sustainable Humanosphere, Kyoto University), Yasunobu Ogawa(National Institute of Polar Research), Satonori Nozawa(Solar-Terrestrial Environment Laboratory), Hiroyuki Hashiguchi(Research Institute for Sustainable Humanosphere, Kyoto University), Chair:Roland Tsunoda(Center for Geospace Studies SRI International)

3:15 PM - 3:30 PM

[PEM06-10] 3D ionospheric electron density determination in Scandinavia with TomoScand and EISCAT 3D

*Olaf AMM1, Johannes NORBERG1, Juha VIERINEN2, Lassi ROININEN3, Markku LEHTINEN3, Aoi NAKAMIZO1 (1.Finnish Meteorological Institute, Arctic Research Unit, Helsinki, Finland, 2.Haystack Observatory, Massachusetts Institute of Technology, Westford, Massachusetts, USA, 3.Sodankyla Geophysical Observatory, University of Oulu, Finland)

Keywords:ionospheric tomography, ionospheric electron density, ground-based observations, EISCAT 3D

The TomoScand network for ionospheric tomography in Scandinavia consists of a network of newly designed Beacon receivers and an extensive, dense array of GPS receivers. A novel tomographic inversion technique allows for a multi-frequency analysis for reconstruction of ionospheric electron densities, and is also able to include information of a multitude of ground-based measurements into the inversion, such as data from ionosondes, from the EISCAT radar, and from the magnetometers of the MIRACLE network in Scandinavia. We present the current status of the TomoScand network, and show latest inversion results on 2D profiles in meridional direction, together with test results that allow to evaluate the performance of the inversion technique. Further, we discuss the future development into a full 3D inversion scheme, and how the TomoScand network can be used as a "partner instrument" for the upcoming EISCAT 3D radar.