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The High‐Frequency Fluctuation of the Wind in the First Kilometer of the Atmosphere
Author(s) -
Readings C. J.,
Rayment D. R.
Publication year - 1969
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs004i012p01127
Subject(s) - intermittency , turbulence , atmospheric sciences , atmospheric instability , daytime , environmental science , meteorology , turbulence kinetic energy , atmosphere (unit) , dissipation , buoyancy , range (aeronautics) , clear air turbulence , wind speed , lapse rate , physics , mechanics , materials science , composite material , thermodynamics
This paper describes some preliminary experiments made at Cardington during 1968 to measure the fluctuations of wind inclination in the frequency range 0.1–3 Hz. The measurements were made at heights up to about 1 km by using a tethered balloon. The results illustrate the intermittency of atmospheric turbulence and show the way in which the implied average rate of dissipation of turbulent kinetic energy varies with height under different daytime stability conditions including overhead inversions. The results are also broadly consistent with a buoyancy production that is roughly constant with height in the convective layer (and is the dominant contribution at the greater heights) and a mechanical production that falls off roughly as 1/z.