Abstract: Various methods of determining vertical eddy diffusion coefficients in the planetary boundary layer from two natural radioactive tracers, radon (Rn-222) and ThB (Pb-212), are presented and discussed. In all cases, it is ...

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 ...

Abstract: The mobilities and diffusion coefficients of the decay products of a natural radioactive gas, 86Tn220, and of an artificial radioactive gas, 86Kr88, have been measured in filtered air. The study of the mobility of these ...

Abstract: Spectral aerosol optical depths were measured in seven localities of Niger (West African Sahel) from February 1986 to June 1987. Results of these observations, together with related climatic parameters, are presented and ...