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Browsing by Author "Pomeroy, John W."

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Boundary layer growth and advection of heat over snow and soil patches: Modelling and parametrization

Pomeroy, John W.; Granger, Raoul; Essery, Richard (2006)

Melting snow is generally patchy; upward sensible heat fluxes from patches of snow-free ground warm the air and contribute energy for snowmelt. A simple model is presented for advection of heat over partial snowcovers and ...
An extension of the force-restore method to estimating soil temperature at depth and evaluation for frozen soils under snow

Maule, C. P.; Granger, Raoul; Pomeroy, John W.; Hirota, T. (2011-08-02)

The force-restore method (FRM) was originally developed for estimating diurnal fluctuations in the ground surface temperature. Because of its relatively simple parameterization, it is commonly applied in meteorological and ...
The impact of coniferous forest temperature on incoming longwave radiation to melting snow

Granger, Raoul; Pomeroy, John W.; Ellis, Chad; Hardy, Janet; Rowlands, Aled; Link, Tim; Marks, Danny (2009-08-15)

Measurements were conducted in coniferous forests of differing density, insolation and latitude to test whether air temperatures are suitable surrogates for canopy temperature in estimating sub-canopy longwave irradiance ...
Prediction of seasonal snow accumulation in cold climate forests

Hedstrom, N. R.; Gray, D. M.; Janowicz, J. R.; Pomeroy, John W. (2011-08-02)

Accumulation of snow under forest canopies is known to decline with increasing canopy density and leaf area because of snow interception and sublimation in the canopy. Seasonal snow accumulation measurements, collected ...
Radiative Transfer Modeling of a Coniferous Canopy Characterized by Airborne

Hardy, Janet; Rutter, Nick; Melloh, Rae; Pomeroy, John W.; Bunting, Peter J.; Essery, Richard; Rowlands, Aled; Marks, Danny; Link, Tim (2008-04)

Solar radiation beneath a forest canopy can have large spatial variations, but this is frequently neglected in radiative transfer models for large-scale applications. To explicitly model spatial variations in subcanopy ...
Spatial Variability of Shortwave Irradiance for Snowmelt in Forests

Sicart, Jean Emmanuel; Essery, Richard; Pomeroy, John W.; Ellis, Chad; Link, Tim; Marks, Danny; Rowlands, Aled; Hardy, Janet (2011-06-28)

The spatial variation of melt energy can influence snow cover depletion rates and in turn be influenced by the spatial variability of shortwave irradiance to snow. The spatial variability of shortwave irradiance during ...
Sublimation of snow from confierous forests in a climate model

Pomeroy, John W.; Storck, Pascal; Parviainen, Jason; Essery, Richard (2003)

Improved representations of snow interception by coniferous forest canopies and sublimation of intercepted snow are implemented in a land-surface model. Driven with meteorological observations from forested sites in Canada, ...
Thick ice layers in snow and frozen soil affecting gas emissions from agricultural soils during winter

Rochette, P.; Jones, H. G.; Pomeroy, John W.; Theriault, G.; van Bochove, E. (2001)

We investigated soil and snow cover gas concentrations at two agricultural sites (St-Lambert; Chapais) in Quebec, Canada, during winter 1998¿1999. Both sites showed frozen and unfrozen soils and complex snow cover structure. ...
Vegetation and Topographic Control of Wind-blown Snow Distributions in Distributed and Aggregated Simulations for an Arctic Tundra Basin

Essery, Richard; Pomeroy, John W. (2004)

A fine-scale model of blowing snow is used to simulate the characteristics of snowcover in a low-Arctic catchment with moderate topography and partial shrub cover. The influence of changing shrub characteristics is ...

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