Evaluation of a new mixed-phase cloud microphysics parameterization with CAM3 single-column model and M-PACE observations
作者： Xiaohong Liu , Shaocheng Xie , Steven J. Ghan
DOI: 10.1029/2007GL031446
关键词:
摘要: Most global climate models generally prescribe the partitioning of condensed water into liquid droplets and ice crystals in mixed-phase clouds according to a temperature-dependent function, which affects modeled cloud phase, lifetime radiative properties. This study evaluates new microphysics parameterization (for nucleation vapor deposition) against Atmospheric Radiation Measurement (ARM) Mixed-phase Arctic Cloud Experiment (M-PACE) observations using NCAR Community Model Version 3 (CAM3) single column model (SCAM). It is shown that SCAM with scheme produces more realistic simulation phase structure waterinto during M-PACE than standard CAM. Sensitivity test indicates number concentration could play an important role simulated microphysics, thereby needs be realistically represented models.
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