SUZUKI Hidehiko    Department   Undergraduate School  , School of Science and Technology    Position   Associate Professor
Research Period	2012/04～2016/03
Research Topic	Chemistry and transport at the bottom of the upper atmosphere using novel lidar observations
Research Type	KAKENHI Research
Consignor	Japan Society for the Promotion of Science
Research Program Type	Grant-in-Aid for Scientific Research (B)
KAKENHI Grant No.	24340121
Representative Person	NAKAMURA Takuji
Collaborative Researcher	MIYOSHI Yasunobu, TSUTSUMI Masaki, TANAKA Yoshimasa, WATANABE Junichi
Details	A high-performance laser has been applied to develop a resonance scatter lidar for observations of the bottom part of the upper atmosphere around 100 km height in order to clarify on the transport and constituent variations which are closely related to the chemical processes there. The observations at mid-latitude in the northern hemisphere and in the Antarctic have been carried out together with novel observations by large aperture atmospheric radar and airglow imaging etc. The selected topics achieved are as follows. High altitude sodium atom layer has been found in the thermosphere. Meteor orbits, meteor flux and effects on the atmosphere have been estimated. Development of calcium ion layer by a lidar, which is comparable to the ultra large aperture radar observation of the ionosphere, and its observation have clarified vertical couplings.