A Discussion of “Slice Method”

[摘要] “Slice Method” for determining the stability or instability conditions of the atmosphere was discussed. As the result it was found that the treatments by J. Bjerknes, S. Petterssen and S. Syono were not correct. By dynamical treatment of the problem the author obtained the following results.(1) In the cases of non-saturated air and also of saturated air, stability criteria and solenoid-producing energy derived from the parcel method hold also for the slice method.(2) In the case of saturated ascent through a dry-adiabatically descending environment, stability criteria and solenoid-producing energy are slightly different from those by J. Bjerknes, etc.The force realized in the ascending slice M1, by small displacement _??_z1, was tabulated for various cases and methods.

[学科分类] 大气科学