An Ice-Water Saturation Adjustment

• DOI: 10.1175/1520-0493(1989)117<0231:aiwsa>2.0.co;2
• Publication Date: 2002-07-27T12:19:52Z
• Authors: Wei-Kuo Tao; Joanne Simpson; Michael McCumber

A reasonably accurate and noniterative saturation adjustment scheme is proposed to calculate: (1) the amount of condensation and/or deposition necessary to remove any supersaturated vapor, or (2) the amount of evaporation and/or sublimation necessary to remove any subsaturation in the presence of cloud droplets and/or cloud ice. This proposed scheme can be implemented for a nonhydrostatic cloud model. The derivation of the scheme, an evaluation of its performance, and tests for sensitivity to variations in a few key parameters are presented.