[P-EM16] Physics and Chemistry in the Atmosphere and Ionosphere

[PEM16-14] Test observations by a frequency-tunable resonance scattering lidar

*Mitsumu K. Ejiri¹, Takanori Nishiyama¹, Takuo T. Tsuda², Makoto Abo⁴, Katsuhiko Tsuno³, Satoshi Wada³, Takayo Ogawa³, Takuya Kawahara⁵, Takuji Nakamura¹ (1.National Institute of Polar Research, 2.The University of Electro-Communications, 3.RIKEN, 4.Graduate School of System Design, Tokyo Metropolitan University, 5.Faculty of Engineering, Shinshu University)

Keywords:resonance scattering lidar, Mesosphere Lower-Thermosphere Region, Temperature measurement, Metal atom, Metal ion

The National Institute of Polar Research (NIPR) is leading a six year prioritized project of the Antarctic research observations since 2010. One of the sub-project is entitled the global environmental change revealed through the Antarctic middle and upper atmosphere. Profiling dynamical parameters such as temperature and wind, as well as minor constituents is the key component of observations in this project, together with a long term observations using existent various instruments in Syowa, the Antarctica (69S). As a part of the sub-project, we are developing a new resonance lidar system with multiple wavelengths and plan to install and operate it at Syowa, Antarctica. The lidar will observe temperature profiles and variations of minor constituents such as Fe, K, Ca⁺, and aurorally excited N₂⁺. The lidar system is being developed with trial and error in test observations of the metal atom and ion density and the MLT temperature profiles. The lidar will be installed at Syowa in Antarctica by the 58th Japan Antarctic Research Expedition (JARE 58). In this presentation, we will report current status of the system developments and discuss results of the test observations.