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Abstract (from http://iopscience.iop.org/article/10.1088/1748-9326/11/8/084009/meta): Record low snowpack conditions were observed at Snow Telemetry stations in the Cascades Mountains, USA during the winters of 2014 and 2015. We tested the hypothesis that these winters are analogs for the temperature sensitivity of Cascades snowpacks. In the Oregon Cascades, the 2014 and 2015 winter air temperature anomalies were approximately +2 °C and +4 °C above the climatological mean. We used a spatially distributed snowpack energy balance model to simulate the sensitivity of multiple snowpack metrics to a +2 °C and +4 °C warming and compared our modeled sensitivities to observed values during 2014 and 2015. We found that for...
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What will the rivers of the Pacific Northwest look like in the future? Will they be stable or unstable? Will the waters be cold and clear or warm and muddy? Will they have salmon or other species? These questions motivated our two-year study of climate warming effects on headwater streams draining the Cascade Mountains. Using a novel combination of snow, geohydrology, and sediment transport models we assessed the vulnerability of stream channels to changing peak streamflow. Our snow modeling shows that with just a 2°C warming, snowfall shifts to rainfall at all elevations, peak snowpacks occur over two months earlier, and snowpacks are reduced by over half of historical values. Our geohydrology modeling shows that...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2012,
CASC,
Cascade Mountains,
Completed,
Deschutes River Basin, All tags...
Northwest,
Northwest,
Northwest CASC,
Projects by Region,
Rivers, Streams and Lakes,
Rivers, Streams and Lakes,
Water, Coasts and Ice,
Water, Coasts and Ice,
Willamette River Basin,
aquatic habitat,
geomorphology,
hydrologic extremes,
peak flows,
snow dynamics,
vulnerability assessment, Fewer tags
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