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A theoretical assessment of heat transfer by ventilation in homogeneous snowpacks

Bartlett, Stuart and Lehning, Michael (2011) A theoretical assessment of heat transfer by ventilation in homogeneous snowpacks Water Resources Research, 47

Record type: Article


The effects of heat transfer by ventilation in snow are investigated theoretically. We draw together standard analytical results for fluid flow in porous media and apply them to the case of steady flows induced by periodic roughness elements. These solutions are used to estimate the relative magnitude of ventilation heat transfer in snow. We conclude that topography-driven ventilation is unlikely to have a significant impact on the larger scale energy balance of snow-covered regions since the airflow is confined to a shallow penetration depth or just the roughness elements themselves, rather than the bulk snowpack. In particular, for the limiting case of very warm and moisture saturated air flowing over a melting snow cover, we show that latent and sensible heat due to ventilation have about equal contributions and that this contribution is small compared to the overall surface flux as predicted by the Monin-Obukhov theory.

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Published date: 7 April 2011
Organisations: Agents, Interactions & Complexity


Local EPrints ID: 272160
ISSN: 0043-1397
PURE UUID: 4845bfcd-24b0-4098-845f-31397c33d04e

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Date deposited: 07 Apr 2011 09:34
Last modified: 18 Jul 2017 06:33

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Author: Stuart Bartlett
Author: Michael Lehning

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