All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 138 25 1
PDF Downloads 35 17 0

Experimental Studies of the Turbulence Structure Parameters of the Convective Boundary Layer

A. DruilhetLaboratoire de Physique des Aérosols et Echanges Atmosphériques, C.P.A.-U.P.S., 31062 Toulouse cedex France

Search for other papers by A. Druilhet in
Current site
Google Scholar
PubMed
Close
,
J. P. FrangiLaboratoire de Physique des Aérosols et Echanges Atmosphériques, C.P.A.-U.P.S., 31062 Toulouse cedex France

Search for other papers by J. P. Frangi in
Current site
Google Scholar
PubMed
Close
,
D. GuedaliaLaboratoire de Physique des Aérosols et Echanges Atmosphériques, C.P.A.-U.P.S., 31062 Toulouse cedex France

Search for other papers by D. Guedalia in
Current site
Google Scholar
PubMed
Close
, and
J. FontanLaboratoire de Physique des Aérosols et Echanges Atmosphériques, C.P.A.-U.P.S., 31062 Toulouse cedex France

Search for other papers by J. Fontan in
Current site
Google Scholar
PubMed
Close
Full access

Abstract

We present a collection of experimental data concerning turbulent characteristics of the convective boundary layer. These data were obtained by means of instrumented aircraft during numerous experiments carried out above five flight areas from 1973 to 1978. Only dry convective conditions with weak dynamic instability are contained in this report. The computed quantities are vertical turbulent fluxes of sensible and latent heat, second- and third-order moments of vertical wind component, potential temperature and humidity, dissipative and spectral characteristics and length scales. All these quantities are normalized using the convective similarity hypothesis of Deardorff. A particular case is considered for humidity where it is necessary to choose between the two boundary conditions: evaporation and entrainment flux. The latter is chosen.

Abstract

We present a collection of experimental data concerning turbulent characteristics of the convective boundary layer. These data were obtained by means of instrumented aircraft during numerous experiments carried out above five flight areas from 1973 to 1978. Only dry convective conditions with weak dynamic instability are contained in this report. The computed quantities are vertical turbulent fluxes of sensible and latent heat, second- and third-order moments of vertical wind component, potential temperature and humidity, dissipative and spectral characteristics and length scales. All these quantities are normalized using the convective similarity hypothesis of Deardorff. A particular case is considered for humidity where it is necessary to choose between the two boundary conditions: evaporation and entrainment flux. The latter is chosen.

Save