Plan for lidar observations of the polar middle atmosphere in the 26th Japanese Antarctic Research Expedition

A plan is described for lidar observations of the middle atmosphere which will be made by the 26th Japanese Antarctic Research Expedition, 1984-1986 (JARE-26) at Syowa Station (69°00′S, 39°35′E). This work has been planned as part of the Middle Atmosphere Program (MAP). The objectives of observation are to obtain the temporal and spatial variations of the sodium atomic layer in the upper mesosphere and those of temperature profile in the range from the upper stratosphere to the mesosphere by a tunable dye laser in addition to the aerosol observation in the lower stratosphere by a ruby laser which has been already started by the JARE-24 since 1983