Snow ablation modeling at the stand scale in a boreal jack pine forest

Hardy, Janet P.; Davis, Robert E.; Jordan, Rachel; Li, X.; Woodcock, Curtis E.; Ni, Wenge; McKenzie, J. C.

doi:10.1029/96jd03096

Cited by 113 publications

(111 citation statements)

References 20 publications

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“…This simple model does not account for multiple scattering in the canopy or between the canopy and the forest floor, which tends to increase the shortwave irradiance at the snow surface (e.g., Nijssen and Lettenmaier 1999). The effect on snow albedo of potential changes in litter fallout under different canopy covers is not considered here either (Hardy et al 2000).…”

Section: B Sky-view Factor and Shortwave Transmissivitymentioning

confidence: 99%

“…The mean annual precipitation is about 750 mm, with nearly two-thirds falling as snow from October through May. The forest consists of logdepole pine (Pinus contorta) with an average height of 12.4 m (the ''uniform'' forest of Hardy et al 2004). The sky-view factor below the canopy and the mean LAIЈ were estimated to be 0.25 and 1.8 from hemispherical photographs and LI-COR LAI-2000 measurements, respectively.…”

Section: Study Sites and Measurementsmentioning

confidence: 99%

“…Trees shelter the snow surface from wind, reducing turbulent fluxes, so subcanopy snowmelt depends mainly on the radiative fluxes (Price 1988). The magnitudes of net shortwave (positive) and net longwave (negative) ra-diative fluxes are reduced at the snow surface below a forest relative to open sites (Harding and Pomeroy 1996;Hardy et al 1997). As canopy coverage increases, two competitive radiative changes affect snowmelt at the ground surface: vegetation attenuates the transmission of shortwave radiation but enhances longwave irradiance to the surface.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Sensitivity Study of Daytime Net Radiation during Snowmelt to Forest Canopy and Atmospheric Conditions

Sicart¹,

Essery²,

Pomeroy³

et al. 2004

J. Hydrometeor

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Section: B Sky-view Factor and Shortwave Transmissivitymentioning

confidence: 99%

Section: Study Sites and Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Sensitivity Study of Daytime Net Radiation during Snowmelt to Forest Canopy and Atmospheric Conditions

Sicart¹,

Essery²,

Pomeroy³

et al. 2004

J. Hydrometeor

146

172

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“…A one-dimensional snowpack physics model known as SNTHERM [17], has been applied to a full range of winter meteorological conditions, such as snowfall, rainfall, freeze-melt cycles, and transitions between bare and snow-covered ground. This model has been used to predict changes to the optically-equivalent grain size in studies on spectral reflectance [33], summer snow melt in Arctic areas [34] and changes to snow properties under a forest canopy [35]. In this section, we describe briefly the governing equations for the energy and mass balance of snow, and the physical effects on the SNTHERM model parameters used.…”

Section: Sntherm Model Summarymentioning

confidence: 99%

Modeling of Millimeter Wave Backscatter of Time-Varying Snowcover

Shih¹,

Ding²,

Kong³

et al. 1997

PIER

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“…Hardy et al, 1997;Link & Marks, 1997;Pomeroy & Granger, 1997;Suzuki et al, 1999aSuzuki et al, , 2006Koivusalo & Kokkonen, 2002; 444 Kazuyoshi Suzuki et al Storck et al, 2002;Suzuki & Ohta, 2003;Zhang et al, 2004). Pyke & Andelman (2007) noted that it is important to consider land use when estimating snow cover.…”

Section: Introductionmentioning

confidence: 99%

Impact of land-use changes on snow in a forested region with heavy snowfall in Hokkaido, Japan

Suzuki¹,

Kodama²,

Nakai³

et al. 2011

Hydrological Sciences Journal

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We simulated snow processes in a forested region with heavy snowfall in Japan, and evaluated both the regional-scale snow distribution and the potential impact of land-use changes on the snow cover and water balances over the entire domain. SnowModel reproduced the snow processes at open and forested sites, which were confirmed by snow water equivalent (SWE) measurements at two intensive observation sites and snow depth measurements at the Automated Meteorological Data Acquisition System sites. SnowModel also reproduced the observed snow distribution (from the MODIS snow cover data) over the simulation domain during thaw. The observed SWE was less at the forested site than at the open site. The SnowModel simulations showed that this difference was caused mainly by differences in sublimation. The type of land use changed the maximum SWE, onset and duration of snowmelt, and the daily snowmelt rate due to canopy snow interception.Key words deforestation; canopy snow interception; sublimation; snowmelt rate; turbulent flux Impact de changements d'occupation du sol sur la neige dans une région forestière fortement enneigée de Hokkaido, Japon Résumé Nous avons simulé les processus neigeux dans une région forestière fortement enneigée au Japon, et évalué à la fois la répartition de la neige à l'échelle régionale et l'impact potentiel des changements d'occupation du sol sur le couvert neigeux et sur le bilan hydrologique pour l'ensemble du domaine. SnowModel reproduit les processus neigeux dans les sites ouverts et forestiers, ce qui est confirmé par des mesures d'équivalent en eau de la neige en deux sites d'observation intensive et des mesures de la profondeur de la neige sur les sites du système automatique d'acquisition de données météorologiques. SnowModel reproduit également la distribution de la neige observée (à partir de données MODIS de couvert neigeux) sur le domaine de la simulation au cours de la fonte nivale. L'équivalent en eau de la neige observé est inférieur pour le site forestier que pour le site ouvert. Les simulations avec SnowModel montrent que cette différence est principalement causée par des différences en matière de sublimation. Le type d'occupation du sol change l'équivalent en eau de la neige maximum, le début et la durée de la fonte nivale, et le taux de fonte journalier en raison de l'interception de la neige par la canopée.

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Snow ablation modeling at the stand scale in a boreal jack pine forest

Cited by 113 publications

References 20 publications

A Sensitivity Study of Daytime Net Radiation during Snowmelt to Forest Canopy and Atmospheric Conditions

A Sensitivity Study of Daytime Net Radiation during Snowmelt to Forest Canopy and Atmospheric Conditions

Modeling of Millimeter Wave Backscatter of Time-Varying Snowcover

Impact of land-use changes on snow in a forested region with heavy snowfall in Hokkaido, Japan

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