Abstract: During the period of 26 October 1989 through 6 December 1989 a unique complement of measurements was made at the University of Wisconsin?Madison to study the radiative properties of cirrus clouds. Simultaneous observations ...

Abstract: AbstractA common feature of the stratocumulus-to-cumulus transition (SCT) is the presence of layers in which the concentration of particles larger than 0.1 ?m is below 10 cm?3. These ultraclean layers (UCLs) are explored ...