A new parametrization for the radiative properties of ice crystals: Comparison with existing schemes and impact in a GCM

A new parametrization for the radiative properties of ice crystals: Comparison with existing schemes and impact in a GCM

A new parametrization of the single scattering properties of ice crystals suitable for use in general circulation models of the atmosphere is presented. The parametrization is developed from a recent treatment of the scattering properties of an ensemble of ice crystals, which has been validated agai...

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Veröffentlicht in:Atmospheric research 2007, Vol.83 (1), p.19-35
Hauptverfasser: Edwards, J.M., Havemann, S., Thelen, J.-C., Baran, A.J.
Format: Artikel
Sprache:eng
Schlagworte:
Cirrus
Climate models
Climatology. Bioclimatology. Climate change
Cloud physics
Earth, ocean, space
Exact sciences and technology
External geophysics
Meteorology
Radiation parametrization
Single scattering properties
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Zusammenfassung:A new parametrization of the single scattering properties of ice crystals suitable for use in general circulation models of the atmosphere is presented. The parametrization is developed from a recent treatment of the scattering properties of an ensemble of ice crystals, which has been validated against observational data and is based on a more rigorous treatment of ice optics than has been possible until recently. The new parametrization is compared with existing schemes in idealized test cases and its impact in a climate model is assessed.
ISSN:0169-8095
1873-2895
DOI:10.1016/j.atmosres.2006.03.002