Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 102 for “"snowpack"”.
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Wildfire impacts on western United States snowpack
Snowpack in the western U.S. is critical for water supply and is threatened by wildfires, which are becoming larger and more common. Numerous studies have examined impacts of wildfire on snow water equivalent (SWE), but many of these studies are limited in the number of observation locations, and …
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Measurement of snowpack properties using active FM-CW microwave systems
… water equivalence and liquid water content of snowpacks. A three-component "electrical path length" dielectric mixture model is described which accounts for the microwave system response as a function of operating frequency, snow density and depth (water equivalence), and liquid water content. …
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Chemistry of the sea ice/ snowpack/ atmosphere system in coastal Antarctica
Tropospheric Ozone Depletion Events (ODEs) have been known to occur during springtime in polar regions for over 20 years. During such events, ozone concentrations can fall from background amounts to below instrumental detection limits within a few minutes and remain suppressed for on the order of …
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1300 Years of Snowpack Change for the Sangre de Cristo Mountian Range
… of the cool-season precipitation accumulates as snowpack in the lower Southern Rocky Mountains. Snowpack runoff from the Sangre de Cristo (SDC) range provides critical headwater resources for the two major rivers that run through New Mexico and by extension the greater population. Yet, over the …
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The Effect of Tree Shade and Snowpack Cover on Pavement Surface Temperature
… practices, principles of heat transfer for snowpack systems, and the urban heat island effect. Then, a 1D heat transfer model, combining snowpack systems and pavement structures, is developed and presented, and a sensitivity analysis is performed on several model parameters. Finally, …
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Studies of Arctic halogen chemistry from the snowpack to the gas phase
… during February 2014 in Barrow, Alaska, where in-snowpack production of BrCl and Cl<sub>2</sub> were observed. These measurements were accompanied by vertical profile experiments to determine flux emission rates of Br<sub>2</sub> and Cl<sub>2</sub> from the snowpack. Furthermore, ambient chemical …
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Development and testing of an application specific force sensor for snowpack assessment
… performance isn't perfect for all criteria, snowpack simulation tests suggest that the sensor's shortcomings are acceptable for the targeted application of measuring relative snow hardness.
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Trends and interannual variability in snowpack and spring season hydroclimatology in the southwestern United States
… its relatively low latitude and already marginal snowpack, especially in Arizona and much of New Mexico, the southwestern U.S. is a compelling location in which to study how temperature and seasonal snowpack interact to affect spring hydroclimatology. Understanding snowpack-mediated spring soil …
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Variability in spring snowpack and winter atmospheric circulation pattern frequencies in the Peace River Basin
… (both spatially and temporally) in spring snowpacks of the Peace River Basin over the period 1947-1992. Snowpack measurements were only available for the years 1960-1992, therefore other climate variables were used as a surrogate for snowpack to extend the analysis for the full 46-year …
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Delay of Spring Snowmelt due to Storm-Induced Changes in Snowpack, Columbia River Headwaters, Western Montana, USA
… as snow. During the snowmelt season, the melting snowpack is subjected to a continuum of snow accumulation and/or sustained subfreezing temperature episodes that inhibit the generation and release of snowmelt. Snowmelt is delayed as heat transfer to the snowpack is reduced, but melt-runoff delays …
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Delay of Spring Snowmelt due to Storm-Induced Changes in Snowpack, Columbia River Headwaters, Western Montana, USA
… as snow. During the snowmelt season, the melting snowpack is subjected to a continuum of snow accumulation and/or sustained subfreezing temperature episodes that inhibit the generation and release of snowmelt. Snowmelt is delayed as heat transfer to the snowpack is reduced, but melt-runoff delays …
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Winter Carbon Dioxide Efflux in Sierra Nevada Meadows: Contributions to Annual Carbon Budgets, Influence of Snowpack, and Subnivean Conditions
… persistent fluxes can continue occurring beneath snowpack for several months. We quantified instantaneous wintertime CO2 efflux rates across two Sierra Nevada meadows. We measured Van Norden meadow in the winters of 2023-2024 and 2024-2025 and Martis meadow, during the winter of 2024-2025. We …
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Amélioration des simulations de densité du couvert neigeux par SNOWPACK pour l’évaluation des conditions de forage du caribou de Peary
… avec des méthodes in situ. Le modèle de neige SNOWPACK peut être un outil puissant afin d’appuyer la prise de décision face à des sujets critiques comme la conservation des caribous de Peary. Cependant, les simulations actuelles surestiment systématiquement la densité de la couche basale de …
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Energy controls on diurnal snowmelt events and stream recharge, Lost Horse Canyon, Bitterroot Mountains, MT
… fluctuations. We analyze net radiation over the snowpack to approximate the energy state of the snowpack and relate it to hillslope hydrologic response and changes in stream stage. Our results suggest that the snowpack cold content must be overcome on a daily basis before recharge to the soil can …
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Energy controls on diurnal snowmelt events and stream recharge, Lost Horse Canyon, Bitterroot Mountains, MT
… fluctuations. We analyze net radiation over the snowpack to approximate the energy state of the snowpack and relate it to hillslope hydrologic response and changes in stream stage. Our results suggest that the snowpack cold content must be overcome on a daily basis before recharge to the soil can …
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Deuterium and snow hydrology
HDO samples from natural and laboratory snowpacks show that snowpack metamorphism can reduce the initial variability in the HDO content of snow. Field studies in Colorado indicated melt water percolation reduced the variability from a spread of -229%o to -106% relative to Standard Mean Ocean Water …
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ASSESSMENT AND POTENTIAL ADJUSTMENTS TO THE SNOW-RELATED ALGORITHMS IN BIOME-BGC, v4.2
… throughout the 20th century have diminished snowpack around the west, a trend that may accelerate in the future. Loss of critical snowpack could negatively affect the ecosystems and communities that have come to depend on it. Process models offer a way to illuminate the effects of climate …
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