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The lapse rate of temperature following an air parcel
Author(s) -
Staley D. O.
Publication year - 1966
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49709239114
Subject(s) - lapse rate , adiabatic process , computation , mechanics , horizontal and vertical , geology , meteorology , field (mathematics) , motion (physics) , geodesy , environmental science , classical mechanics , atmospheric sciences , mathematics , physics , thermodynamics , algorithm , pure mathematics
The lapse rate of temperature following an individual air parcel is derived assuming continuity of temperature, density, motion, and non‐vertical ascent in a changing pressure field. The result differs substantially in form and sometimes in magnitude from that obtained by the usual theory in which the ascent is strictly vertical and the parcel is discontinuous. When non‐vertical ascent and continuous fields are taken into account, important terms arise when the pressure field varies rapidly with time or along the horizontal coordinates. The importance of the departure of the unsaturated parcel lapse rate from gc p −1in the computation of vertical motion by the adiabatic method is noted.