On the Use of Bulk Aerodynamic Formulae Over Melting Snow

作者: R. Daniel Moore

DOI: 10.2166/NH.1983.0016

关键词: Heat transferLatent heatRoughness lengthEnvironmental scienceScalingSnowTurbulenceSensible heatMeteorologyMechanicsAdvection

摘要: Bulk aerodynamic formulae which relate the turbulent exchanges of sensible and latent heat over melting snow to measurements windspeed, temperature humidity at one level can be derived from flux-gradient relationships assumed log-linear profiles. Recent analyses local advection wind flow complex terrain suggest that bulk should apply in non-ideal field situations. The assumption scaling lengths for equal roughness length is problematic, since theoretical indicate they much less than length. However, effect scale inequality on stability correction tends compensate neutral-case transfer coefficient. Field experience indicates are adequate use energy balance estimates daily or shorter term snowmelt.

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