Spatial distribution of the polar thermospheric wind acceleration and importance of the 2D measurement with SDIs

Shin-ichiro Oyama1,2, Anita Taina Aikio2, Mark Conde3, Heikki Vanhamaki4, Ilkka I Virtanen2 and SDI-3D project team, (1)Nagoya University, Nagoya, Japan, (2)University of Oulu, Oulu, Finland, (3)University of Alaska Fairbanks, Fairbanks, AK, United States, (4)Finnish Meteorological Institute, Helsinki, Finland