Abstract: In situ measurements made in cold (?35° to ?60°C) cirrus clouds over southern Germany in March 1994 are presented. The clouds appeared to be in an early stage of their life cycle and their properties in many ways resemble ...

Abstract: The vertical velocity variance during convective activity was measured with an acoustic Doppler sounder. Here we show that this technique provides measurement of the heat flux profile in the well-mixed surface layer and ...

Abstract: In situ observations of the microphysical properties of upper-tropospheric contrails and cirrus clouds have been performed during more than 15 airborne missions over central Europe. Experimental and technical aspects ...