Search Results - "Sexstone, Graham"

Snow Sublimation in Mountain Environments and Its Sensitivity to Forest Disturbance and Climate Warming by Sexstone, Graham A., Clow, David W., Fassnacht, Steven R., Liston, Glen E., Hiemstra, Christopher A., Knowles, John F., Penn, Colin A.

“…Snow sublimation is an important component of the snow mass balance, but the spatial and temporal variability of this process is not well understood in…”
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Black carbon dominated dust in recent radiative forcing on Rocky Mountain snowpacks by Gleason, Kelly E, McConnell, Joseph R, Arienzo, Monica M, Sexstone, Graham A, Rahimi, Stefan

“…Abstract The vast majority of surface water resources in the semi-arid western United States start as winter snowpack. Solar radiation is a primary driver of…”
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Preferential elution of ionic solutes in melting snowpacks: Improving process understanding through field observations and modeling in the Rocky Mountains by Costa, Diogo, A Sexstone, Graham, W Pomeroy, John, H Campbell, Donald, W Clow, David, Mast, Alisa

“…The preferential elution of ions from melting snowpacks is a complex problem that has been linked to temporary acidification of water bodies. However, the…”
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Evaluating Distributed Snow Model Resolution and Meteorology Parameterizations Against Streamflow Observations: Finer Is Not Always Better by Barnhart, Theodore B., Putman, Annie L., Heldmyer, Aaron J., Rey, David M., Hammond, John C., Driscoll, Jessica M., Sexstone, Graham A.

“…Estimating snow conditions is often done using numerical snowpack evolution models at spatial resolutions of 500 m and greater; however, snow depth in complex…”
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Comparison of methods for quantifying surface sublimation over seasonally snow-covered terrain by Sexstone, Graham A., Clow, David W., Stannard, David I., Fassnacht, Steven R.

“…Snow sublimation can be an important component of the snow‐cover mass balance, and there is considerable interest in quantifying the role of this process…”
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Runoff sensitivity to snow depletion curve representation within a continental scale hydrologic model by Sexstone, Graham A., Driscoll, Jessica M., Hay, Lauren E., Hammond, John C., Barnhart, Theodore B.

“…The spatial variability of snow water equivalent (SWE) can exert a strong influence on the timing and magnitude of snowmelt delivery to a watershed. Therefore,…”
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Modeling Forest Snow Using Relative Canopy Structure Metrics by Moeser, C. David, Sexstone, Graham, Kurzweil, Jake

“…Snow and watershed models typically do not account for forest structure and shading; therefore, they display substantial uncertainty when attempting to account…”
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Changes in Climate and Land Cover Affect Seasonal Streamflow Forecasts in the Rio Grande Headwaters by Penn, Colin A., Clow, David W., Sexstone, Graham A., Murphy, Sheila F.

“…Seasonal streamflow forecast bias, changes in climate, snowpack, and land cover, and the effects of these changes on relations between basin‐wide snowpack,…”
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Water-quality response to a high-elevation wildfire in the Colorado Front Range by Mast, M. Alisa, Murphy, Sheila F., Clow, David W., Penn, Colin A., Sexstone, Graham A.

“…: Water quality of the Big Thompson River in the Front Range of Colorado was studied for 2 years following a high‐elevation wildfire that started in October…”
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Spatial patterns of atmospheric deposition of nitrogen and sulfur using ion-exchange resin collectors in Rocky Mountain National Park, USA by Clow, David W., Roop, Heidi A., Nanus, Leora, Fenn, Mark E., Sexstone, Graham A.

“…Lakes and streams in Class 1 wilderness areas in the western United States (U.S.) are at risk from atmospheric deposition of nitrogen (N) and sulfur (S), and…”
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Evaluating hydrologic region assignment techniques for ungaged basins in Alaska, USA by Barnhart, Theodore B., Farmer, William H., Hammond, John C., Sexstone, Graham A., Curran, Janet H., Koch, Joshua C., Driscoll, Jessica M.

“…Building continental‐scale hydrologic models in data‐sparse regions requires an understanding of spatial variation in hydrologic processes. Extending these…”
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High Resolution SnowModel Simulations Reveal Future Elevation‐Dependent Snow Loss and Earlier, Flashier Surface Water Input for the Upper Colorado River Basin by Hammond, John C., Sexstone, Graham A., Putman, Annie L., Barnhart, Theodore B., Rey, David M., Driscoll, Jessica M., Liston, Glen E., Rasmussen, Kristen L., McGrath, Daniel, Fassnacht, Steven R., Kampf, Stephanie K.

“…Continued climate warming is reducing seasonal snowpacks in the western United States, where >50% of historical water supplies were snowmelt‐derived. In the…”
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Snow Surface Roughness across Spatio-Temporal Scales by Fassnacht, Steven R., Suzuki, Kazuyoshi, Sanow, Jessica E., Sexstone, Graham A., Pfohl, Anna K. D., Tedesche, Molly E., Simms, Bradley M., Thomas, Eric S.

“…The snow surface is at the interface between the atmosphere and Earth. The surface of the snowpack changes due to its interaction with precipitation, wind,…”
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Deriving snow-cover depletion curves for different spatial scales from remote sensing and snow telemetry data by Fassnacht, Steven R., Sexstone, Graham A., Kashipazha, Amir H., López-Moreno, Juan Ignacio, Jasinski, Michael F., Kampf, Stephanie K., Von Thaden, Benjamin C.

“…During the melting of a snowpack, snow water equivalent (SWE) can be correlated to snow‐covered area (SCA) once snow‐free areas appear, which is when SCA…”
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Geometric Versus Anemometric Surface Roughness for a Shallow Accumulating Snowpack by Sanow, Jessica, Fassnacht, Steven, Kamin, David, Sexstone, Graham, Bauerle, William, Oprea, Iuliana

“…When applied to a snow-covered surface, aerodynamic roughness length, z0, is typically considered as a static parameter within energy balance equations…”
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Subgrid snow depth coefficient of variation spanning alpine to sub-alpine mountainous terrain by Sexstone, Graham A., Fassnacht, Steven R., López-Moreno, Juan I., Hiemstra, Christopher A.

“…Given the substantial variability of snow in complex mountainous terrain, a considerable challenge of coarse scale modeling applications is accurately…”
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Relating hydroclimatic change to streamflow, baseflow, and hydrologic partitioning in the Upper Rio Grande Basin, 1980 to 2015 by Rumsey, Christine A., Miller, Matthew P., Sexstone, Graham A.

“…•Consistent decreases in streamflow and baseflow were observed during 1980–2015.•Baseflow responds to climate and anthropogenic change within decades.•Largest…”
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Snow Depth Retrieval With an Autonomous UAV-Mounted Software-Defined Radar by Prager, Samuel, Sexstone, Graham, McGrath, Daniel, Fulton, John, Moghaddam, Mahta

“…We present results from a field campaign to measure seasonal snow depth at Cameron Pass, Colorado, using a synthetic ultrawideband software-defined radar…”
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Streamflow timing and magnitude during snow drought depend on snow drought type and regional hydroclimate by Hammond, John, Putman, Annie, Barnhart, Theodore, Sexstone, Graham, McCabe, Gregory, Wolock, David, Heldmyer, Aaron, Kampf, Stephanie

“…Communities around the world rely on snowmelt to meet water demands, and periods of lower than normal snow accumulation, snow droughts, can decrease water…”
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Spatial Variability in Seasonal Snowpack Trends across the Rio Grande Headwaters (1984–2017) by Sexstone, Graham A., Penn, Colin A., Liston, Glen E., Gleason, Kelly E., Moeser, C. David, Clow, David W.

“…This study evaluated the spatial variability of trends in simulated snowpack properties across the Rio Grande headwaters of Colorado using the SnowModel snow…”
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