Japan Geoscience Union Meeting 2014

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

[P-EM36_28AM1] Physics and Chemistry in the Atmosphere and Ionosphere

Mon. Apr 28, 2014 9:00 AM - 10:45 AM 312 (3F)

Convener:*Yuichi Otsuka(Solar-Terrestrial Environment Laboratory, Nagoya University), Takuya Tsugawa(National Institute of Information and Communications Technology), Seiji Kawamura(National Institute of Information and Communications Technology), Chair:Atsuki Shinbori(Research Institute for Sustainable Humanosphere (RISH), Kyoto University), Seiji Kawamura(National Institute of Information and Communications Technology)

10:30 AM - 10:45 AM

[PEM36-07] A daytime observation of polar mesospheric clouds with Syowa Rayleigh Raman lidar system equipped with a new etalon unit

*Hidehiko SUZUKI1, Takuji NAKAMURA2, Mitsumu EJIRI2, Makoto ABO3, Akihiro YAMAMOTO4, Taku d KAWAHARA4, Yoshihiro TOMIKAWA2, Masaki TSUTSUMI2, Takuo TSUDA2, Takanori NISHIYAMA2 (1.Rikkyo University, 2.National Institute of Polar Research, 3.Tokyo Metropolitan University, 4.Shinshu University)

Keywords:polar mesospheric cloud, noctilucent cloud, lidar, Antarctic

A Rayleigh/Raman lidar system has been operated by the Japanese Antarctic Research Expedition (JARE) since February, 2011 (JARE 52nd) in Syowa Station Antarctica (69.0S, 39.5E). Polar Mesospheric Cloud (PMC) was detected by the lidar at 22:30UT (+3hr for LT) on Feb 4th, 2011, the first day of a routine operation. This event is the first time to detect PMC over Syowa Station by a lidar [Suzuki et al., 2013]. However, signal to noise ratio (SNR) of the PMC event was not so good due to a large shot noise from a daytime background signal. Moreover, a receiver system was mainly designed for nighttime observations. Therefore, observation of PMC during the midnight Sun, which also corresponds to PMC most active period, was difficult. Thus, to improve SNR of the PMC observation with Syowa Rayleigh/Raman lidar during daytime, a narrow bandpass Fabry-Perot etalon system has been developed and installed in the receiver system on Dec 2013 by JARE 55th. In this paper, Prompt report of a PMC observation with Syowa Rayleigh Raman lidar system equipped with the new etalon unit is presented.