@article{oai:nipr.repo.nii.ac.jp:00001999,
 author = {Uchiumi, Michihiro and Hirono, Motokazu and Fujiwara, Motowo},
 journal = {Memoirs of National Institute of Polar Research. Special issue},
 month = {Aug},
 note = {P(論文), Measurements of the night-time mesospheric sodium layer have been performed since 1977,using a dye lidar at Fukuoka (33.4°N, 130.2°E). The results obtained since 1981 are presented in this paper. The experimental setup and error analysis are also presented. A simple and sharp maximum in winter such as observed at other lidar stations in the northern hemisphere (51°N, 44°N, and 40°N) could not be found at Fukuoka. However, the monthly averaged abundance shows a variation by a factor of 3 (1981 and 1983). The abundance increased on the night during the Perseids γ meteor shower in 1978,1979,1981 and 1983 when the weather conditions did not preclude the observation of the sodium layer.},
 pages = {132--142},
 title = {The seasonal variation of night-time sodium layer at 33゜N (II): Error analysis and results from 1981 to 1984},
 volume = {42},
 year = {1986}
}