Global Simulations of ice Nucleation and Ice Supersaturation with an Improved Cloud Scheme in the Community Atmosphere Model
A process-based treatment of ice supersaturation and ice nucleation is implemented in the National Center for Atmospheric Research Community Atmosphere Model (CAM). The new scheme is designed to allow (1) supersaturation with respect to ice, (2) ice nucleation by aerosol particles, and (3) ice cloud cover consistent with ice microphysics. The scheme is implemented with a two-moment microphysics code and is used to evaluate ice cloud nucleation mechanisms and supersaturation in CAM. The new model is able to reproduce field observations of ice mass and mixed phase cloud occurrence better than ...
(For more, see "View full record.")
Gettelman, A.; Liu, Xiaohong; Ghan, S. J.; Morrison, H.; Park, S.; Conley, A. J.; Klein, S. A.; Boyle, J.; Mitchell, D. L.; Li, J.-L.F.
Showing items related by title, author, creator and subject.
Contributor:Grant, Lewis O.; Cermak, J. E. (Jack E.); Orgill, Montie M.; Colorado State University. Department of Civil Engineering
Date:1968-02Delivery of nucleating materials to cloud systems from individual ground generators can play an important role in the beneficial modification of orographic cloud systems. Substantial evidence from the Colorado State ...
Contributions of Clouds, Surface Albedos, and Mixed-Phase Ice Nucleation Schemes to Arctic Radiation Biases in CAM5 Contributor:English, Jason M.; Kay, Jennifer E.; Gettelman, Andrew; Liu, Xiaohong; Wang, Yong; Zhang, Yuying; Chepfer, Helene
Date:2014-07-01The Arctic radiation balance is strongly affected by clouds and surface albedo. Prior work has identified Arctic cloud liquid water path (LWP) and surface radiative flux biases in the Community Atmosphere Model, version 5 ...
Contributor:Xie, S.; Liu, Xiaohong; Zhao, C.; Zhang, Y.
Date:2013-08-15Sensitivity of Arctic clouds and radiation in the Community Atmospheric Model, version 5, to the ice nucleation process is examined by testing a new physically based ice nucleation scheme that links the variation of ice ...