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A case study of a high level Canberra flight on 11 September 1968
Author(s) -
Axford D. N.
Publication year - 1972
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.49709841614
Subject(s) - clear air turbulence , turbulence , spectral line , trough (economics) , gravity wave , atmospheric sciences , meteorology , physics , wavelength , range (aeronautics) , gravitational wave , high energy , geology , environmental science , computational physics , astrophysics , optics , aerospace engineering , atomic physics , astronomy , engineering , economics , macroeconomics
A case study is presented of a high level flight by the MRF Canberra showing most of the characteristic features of intermittent clear air turbulence, gravity waves and smooth flight. Winds and temperatures obtained from two 500 km runs across a sharp upper trough are used to calculate energy spectra and cross‐spectra over a range of wavelengths from 250 m to 100 km. The spectra show clearly the important contribution of the gravity waves in the range 1 km to 10 km, and the negligible contribution of the total high frequency energy in the case of intermittent slight clear air turbulence.