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Quantitative bistatic acoustic sounding of the atmospheric boundary layer
Author(s) -
Caughey S. J.,
Crease B. A.,
Asimakopoulos D. N.,
Cole R. S.
Publication year - 1978
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.49710443911
Subject(s) - depth sounding , turbulence , boundary layer , planetary boundary layer , atmospheric sounding , bistatic radar , echo sounding , environmental science , remote sensing , dissipation , convective boundary layer , geology , acoustics , meteorology , physics , radar , mechanics , computer science , telecommunications , oceanography , radar imaging , thermodynamics
In the bistatic configuration, acoustic echoes from the atmospheric boundary layer are determined by the magnitude of the structure parameters for wind and temperature, C V 2and C T 2respectively. Normally the contribution from C T 2is relatively small and so this arrangement offers a remote method for determining C V 2 , and hence the rate of dissipation of turbulent energy, ϵ. A quantitative assessment of this technique is presented. Direct estimates of ϵ and C T 2have been made using turbulence probes attached to the tethering cable of a large (1300m 3 ) balloon. Sounder‐derived values were obtained using two carefully calibrated acoustic arrays. Results obtained in both convective and stable conditions are described and contrasted.