A parameterization of the particle size spectrum of ice clouds in terms of the ambient temperature and the ice water content.

A data set obtained in cirrus clouds has been examined to deduce any dependencies of the particle size spectral form or the crystal habit on the temperature. It was found that both form of the spectra and crystal habit changed systematically with temperature, the largest change occurring between -40 and -50^oC. These findings are consistent with previously found dependencies between lidar backscatter measurements and temperature.-from Authors