On the Diurnal Variation of the Atmospheric Pressure in the Upper Air

[摘要] The diurnal barometric oscillation in free air over Lindenberg was calculated using the surface hourly barometric values and hourly temperature values in the free air observed at the aerological Observatoire, Lindenberg and compiled by Hergesell. The result was compared with the hourly barometric readings obtained at mountain observatories such as Obir, Säntis, Sonnblick and Mont Blanc and found very good similitude between the calculated free air values and observed summit values, while those observed values at mountain slope such as Zell a. S, Bad Fusch etc. are different with the free air values of similar altitudes.Thus it proves the creditability of the calculated values. Hence further steps are taken by applying the method of harmonic analysis and found the dependency of the amplitude and phase difference of diurnal, and semidiurnal pressure waves on the height above sea level.

[学科分类] 大气科学