Diurnal Variation of Wind Velocity a nd Pressure in the Upper Atmosphere

抄録

Various writers have investigated the diurnal variation of wind at great heights by the analysis of pilot balloon ascents, and also studied the diurnal variation of pressure. at high altitude by the analysis of mean hourly pressures observed at mountains. Here the present author intends to show the relation of the diurnal variation of wind velocity and the diurnal variation of pressure using the data observed at the Mt. Fuji Weather Station.
A standard Japanese weather station was inaugurated on the summit of Mt Fuji (sometimes spelt as Mt. Huzi,3772m above M. S. L.,35° 21' N,138° 44' E) on July 1, 1932 and, since then, regular observations are undertaken by. well-trained observers, without interruption, even during the Great War II. Mt. Fuji Weather Station is, to my knowledge, the highest meteorological observatory in the world among the weather stations which take the hourly observations throughout the year. Quite recently, meteorological data for a 10-year period (Jan.1,1933-Dec.31,1942)has been published under the following title:
Central Meteorological Observatory, Tokyo,1949: FUJI-SAN NO KISHO (Weather at the Summit of Mt. FUJI), No. I, (in Japanese).
The hourly mean pressures and the hourly mean wind speeds observed at the Mt. Fuji Weather Station is given in Table 1.