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Showing 1 to 20 of 39 for “"snow accumulation"”.
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Snow Accumulation and Melt Timing at High Elevations in Northwest Montana
The sensitivity of snowmelt driven water supply to climate variability and change is difficult to assess in the mountain west, where strong climatic gradients coupled with complex topography are sampled by sparse ground measurements. We developed a snowmelt model, which ingests daily satellite …
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Snow Accumulation and Melt Timing at High Elevations in Northwest Montana
The sensitivity of snowmelt driven water supply to climate variability and change is difficult to assess in the mountain west, where strong climatic gradients coupled with complex topography are sampled by sparse ground measurements. We developed a snowmelt model, which ingests daily satellite …
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Snow Accumulation in the Niaqunguk (Apex) River Watershed near Iqualuit, Nunavut, Canada
Spring snowmelt is the largest input to Arctic hydrological systems. The spring snow distribution is extremely spatially variable and difficult to quantify. This study used field measurements and models to characterize and quantify the spring snow distribution in the 52 km2 Niaqunguk River …
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Synoptic Scale Weather Patterns Associated with Annual Snow Accumulation Variability in North-Central Greenland
… Greenland have mostly relied on ice cores, snow pits, mesoscale models, and climate models. In this study, a radar-measured 118-year annual snow accumulation record (1889-2006) along a 375 km traverse between NGRIP and NEEM ice camps in Greenland is used. A Self-Organizing Maps (SOM) …
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Hydrologic significance of stand density variations in Alberta lodgepole pine (Pinus contorta Dougl. (Moench) Voss. var. latifolia Engelm.) forests
… any) of variations in stand density, studies of snow accumulation, canopy interception of rainfall, and soil moisture, were undertaken in natural and previously thinned stands of lodgepole pine in west central Alberta. Secondary objectives dealt with precipitation redistribution within forest …
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Spatial accumulation patterns of snow water equivalent in the southern Rocky Mountains
… be taken within a given watershed to estimate snow water equivalent (SWE) due to cost limitations, which necessitates basin-scale estimation of SWE. Modeling often assumes consistency in the spatial distribution of SWE, which may not be correct. Identifying patterns and variability in the …
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The Impact of Climate Change upon the Snowmelt Hydrology of an Upland UK Catchment
Snowmelt hydrology is important in the winter flow regime of upland catchments in the UK as it can attenuate the extremes of the river flow hydrograph. The sensitivity of snow accumulation and melt to changes in climate, in particular to increases in temperature, could impact upon the variability …
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Improving Snow Deposition Magnitude and Heterogeneity Using Historic Snow Patterns in the California, USA, Sierra Nevada
Mountainous snow-covered landscapes in the Western United States behave like natural reservoirs, storing water during cold winter periods and sustaining snowmelt-driven streamflow vital for agriculture, municipalities, hydropower generation, and local ecosystems. In these regions, the timing and …
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Delay of Spring Snowmelt due to Storm-Induced Changes in Snowpack, Columbia River Headwaters, Western Montana, USA
The timing of mountain snowmelt is important for water resources in western Montana, where the majority of annual precipitation falls as snow. During the snowmelt season, the melting snowpack is subjected to a continuum of snow accumulation and/or sustained subfreezing temperature episodes that …
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Ensemble Modeling of SWE Distribution in the Bitterroot Mountains, Montana, USA
<p>The spatial distribution of snow remains poorly understood at the landscape scale, particularly at high elevation where snow can be under-represented by our current system of monitoring. The transferability of the processes and physiography that drive the spatial distribution of snow require …
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Delay of Spring Snowmelt due to Storm-Induced Changes in Snowpack, Columbia River Headwaters, Western Montana, USA
The timing of mountain snowmelt is important for water resources in western Montana, where the majority of annual precipitation falls as snow. During the snowmelt season, the melting snowpack is subjected to a continuum of snow accumulation and/or sustained subfreezing temperature episodes that …
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Ensemble Modeling of SWE Distribution in the Bitterroot Mountains, Montana, USA
<p>The spatial distribution of snow remains poorly understood at the landscape scale, particularly at high elevation where snow can be under-represented by our current system of monitoring. The transferability of the processes and physiography that drive the spatial distribution of snow require …
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Real-time rendering and simulation of trees and snow
… GPU enhanced tessellation engine. A real-time snow accumulation system is developed to generate snow cover on a dynamic, animated scene. Occlusion techniques are used to project snow accumulating faces and map exposed areas to applied accumulation maps in the form of dynamic textures. …
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Implementation of a snow routine into the hydrological model WASA-SED and its validation in a mountainous catchment
In many regions of the world, snow accumulation and melt constitute important components of the hydrologic cycle. With the objective to improve model performance of the hydrological model WASA-SED (Water Availability in Semi-Arid environments - SEDiments) in catchments affected by snow and ice, a …
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Post-wildfire black carbon deposition on the snowpack in the Cascade Range, Washington State: Temporal and spatial variability with implications for accelerated melt
Wildfires in the seasonal snow zone affect both snow accumulation and ablation patterns by decreasing forest canopy and depositing light absorbing impurities (LAI) on the snowpack. LAI such as black carbon (BC), burned woody debris, and dust reduce snow albedo (reflectance), accelerate melt, and …
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Design implications of snow deposition problems in ski resort areas
… environmental problems. In these environments, snow deposition and its accompanying problems are a major element in architectural design and planning. The objectives of this research were to investigate the background of ski resort development and the problems encountered in their design, …
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The Effects of Snowmelt Percolation on Stratified Pollen Records: A Cooler Study
… of meltwater percolation on pollen found in snow and glacial ice. Previous studies have suggested that pollen is relatively impervious to meltwater percolation due to grain size and, thus, resists transport. However, investigations on McCall Glacier in the Brooks Range of northeast Alaska …
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Contamination of a soft-water stream ecosystem in southwest Virginia by highway-generated heavy metals
… and zinc occurred in spring, most likely due to accumulation and subsequent runoff in snow. Accumulation of these metals in invertebrates and fish is probably a more· time-dependent process. Concentrations in these organisms were related to physiological and ecological factors as well as the …
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Pheasant Use of Wetlands During The Winter and Application of Landsat Imagery For Assessing Winter Habitat
… (<20 ha) with no shrub growth filled with snow early and were not utilized. Landsat data provided importation on the winter cover potential of a wetland. There were sharp tonal differences on the Landsat imagery between the sparsely vegetated wetlands which supported no birds and the tall, …
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