Laboratory and numerical studies of the convective boundary layer capped by a strong inversion

Yuji Ohya, Takanori Uchida

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The convective boundary layer (CBL) with a wide range of stability is simulated experimentally using a thermally stratified wind tunnel, and numerically by direct numerical simulation (DNS). The turbulence structures and flow characteristics of various CBL flows, capped by a strong temperature inversion and affected by surface shear, are investigated. The various vertical profiles of turbulence statistics similar to those from the observed CBL in the field are successfully simulated in both the wind-tunnel experiment and in DNS. The comparison of the wind-tunnel data and DNS results with those of atmospheric observations and water-tank studies shows the crucial dependence of the turbulence statistics in the upper part of the layer on the strength of the inversion layer, as well as the modification of the CBL turbulence regime by the surface shear.

Original languageEnglish
Pages (from-to)223-240
Number of pages18
JournalBoundary-Layer Meteorology
Issue number2
Publication statusPublished - Aug 1 2004


All Science Journal Classification (ASJC) codes

  • Atmospheric Science

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