Diurnal Wind Variation in the Troposphere and Lower Stratosphere over Japan

[摘要] The diurnal variation of wind at nine levels between 1000 and 100mb over eight Japanese stations is obtained from the balloon data during the period of 1956 and 1958. The result of computation indicates that the structure and behavior of the diurnal tidal motion in the troposphere and lower stratosphere are strongly affected by surface topography. This fact is also confirmed by a comparison study of vertical distributions of the diurnal meridional wind oscillation at a coastal, an inland and a mid-ocean stations in middle latitudes. The dominance of vertically propagating modes in the lower atmosphere over the coastal station, and somewhat large magnitude of trapped modes originated in theplanetary boundary layer over the inland station are found.Difference between the observation and theory is also discussed.

[学科分类] 大气科学