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The absolute difference between mean modeled snow-water-equivalent on March 28 for the reference period and mean modeled snow-water-equivalent on March 13 for the T2 climate change scenario, which are the dates of peak basin-integrated SWE for each period, respectively. Reference period: the period 1989 – 2009 for the McKenzie River Basin domain, and 1989 – 2011 for the Upper Deschutes River Basin domain, for which observed historical meteorology is used for model input. T2 scenario: the observed historical (reference period) meteorology is perturbed by adding +2°C to each daily temperature record in the reference period meteorology, and this data is then used as input to the model.
For hundreds of years, Pacific lamprey and Pacific eulachon have been important traditional foods for Native American tribes of the Columbia River Basin and coastal areas of Oregon and Washington. These fish have large ranges – spending part of their lives in the ocean and part in freshwater streams – and they require specific environmental conditions to survive, migrate, and reproduce. For these reasons, Pacific lamprey and Pacific eulachon are likely threatened by a variety of climate change impacts to both their ocean and freshwater habitats. However, to date, little research has explored these impacts, despite the importance of these species to tribal communities. This project will evaluate the effects of future...
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UIEF_wind Summary: Within the Flat Creek Unit of the University of Idaho Experimental Forest (UIEF) near Moscow, ID, 30-minute snow depth and meteorological data were collected at seven locations across the Lawler Landing site (elevation 880 m) from February to May of WY 2008. A 70 m north-south oriented transect of 5 snow depth sensors was deployed to record sub-daily snow depth, with co-located meteorological instruments. The sensors traversed a 40 m long elliptical forest gap and the adjacent forest in both directions. The locations were the same as those used previously to quantify how shortwave and longwave radiation vary across a forest gap [Lawler and Link, 2011]. Two additional snow depth sensors and meteorological...
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This folder and its contents include summaries produced from fish and habitat surveys conducted in Mason Creek, tributary of the East Fork Lewis River, SW Washington, during summer of 2017. First, estimates of abundance and survival for juvenile coho salmon were generated for three time periods (early, middle, and late) during the summer of 2017 and reported in the file "Estimates of juvenile coho summer abundance and survival_MasonCreek_2017.xlsx". Second, summaries of the continuous habitat surveys can be found in the file "FinalStats_MasonMill2017_FishRescue.xlsx". Specifically here, the total length of stream habitat by habitat type (flowing, fragmented, dry) and the frequency and area of stream pools are summarized...
The datasets in these child pages are continuous parameter grids (CPG) of annual air temperature data for the years 2000 through 2016 in the Pacific Northwest. Source temperature data was produced by the PRISM Climate Group at Oregon State University.
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The objective of this project was to evaluate the potential for biochar soil amendments to mitigate agricultural drought by characterizing their impacts on soil hydraulics and plant growth across a range of agricultural soil conditions. This data set contains soil water infiltration measurements using Beerkan infiltration rings in four Oregon agricultural soils amended with biochar. Gasified biochars made from wheat straw (AgEnergy, Spokane, WA) and conifer wood (BioLogical, Philomath, OR) were tilled into soils at experimental stations in Madras (loam), Pendleton (silt loam), Aurora (sandy loam), and Klamath Falls (loamy sand). The biochars were incorporated by tillage in fall 2016 to a depth of 12 cm at rates...
Background/Question/Methods In arid and semi-arid landscapes, springs are important sources of surface water and soil moisture for wildlife and vegetation. Springs have been suggested as possible climate-change refugia, however, springs that depend on recent precipitation or snowmelt for recharge may be vulnerable to warming and drought intensification. Effective conservation of spring-dependent ecosystems—and the biodiversity they support—requires empirical approaches to assess resilience of springs to water cycle changes. Unfortunately, hydrologic data is unavailable for most springs, and those hydrologic records that do exist typically have inadequate temporal extent and resolution to adequately characterize...
These datasets are continuous parameter grids (CPG) of normal (average) first-of-month snow water equivalent data for March through August, averaged across all years, 2004 through 2016, in the Pacific Northwest. Source snow water equivalent data was produced by the Snow Data Assimilation System (SNODAS) at the National Snow and Ice Data Center.
The threshold raster includes the raw streamflow permanence probability value at a given pixel that represents the estimated critical value to differentiate between wet conditions (above the threshold) and dry conditions (below the threshold). Confidence interval rasters indicate the value above or below the threshold corresponding to the nth percentile of confidence that the pixel is wet (above) or dry (below). Raw streamflow permanence probabilities were produced by the PRObability of Streamflow PERmanence (PROSPER) model, a GIS raster-based empirical model of probabilistic predictions of a stream channel having year-round flow for any unregulated and minimally-impaired stream channel in the Pacific Northwest...
These datasets are continuous parameter grids (CPG) of annual mean daily maximum air temperature data for the years 2000 through 2016 in the Pacific Northwest. One 30-year normal (average) annual maximum temperature grid from the period 1981-2010 is also included. Source temperature data was produced by the PRISM Climate Group at Oregon State University.
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In order to assess and understand the potential impacts of climate change on important natural resources, managers, planners, and decision-makers need climate information at a local or regional scale. In general, Global Climate Models (GCMs) provide data at coarser scales than most natural resource managers need but Regional Climate Models (RCMs) are starting to deliver finer scale results. The project team will explore both dynamic downscaling products such as results from RCMs and statistical downscaling products generated at scales finer than the original projections. The Northwest CSC has supported a series of projects that have either generated or tested downscaled climate data for the Pacific Northwest...
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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...
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This project aimed to contribute to effective decision making in the region for the scientific community and general public. Resource managers in the Great Basin are dealing with significant questions regarding how best to make decisions in the natural and human systems in response to climate change. Vulnerability assessments and other tools are used for climate change adaptation, but their effectiveness is not widely understood or examined. Assessing these tools for their utility and for their ability to translate science into accessible and available information for users, including the general public, is critical for the future viability and sustainability of the Great Basin. This project applied social and policy...
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As the dominant force that sets the structure and function of most Pacific Northwest forests, fire is likely to be the major catalyst of forest change in a warming climate. Rising temperatures, decreased snowpack, and earlier snowmelt are expected to lead to longer fire seasons, drier fuel, and an increase in the area burned by wildfires in the future. Forest managers therefore need information on how wildfire patterns and forests will change as the climate warms, in order to guide management activities that can sustain the important ecosystem services that forests provide – including timber production, carbon storage, improved water quality, and recreational opportunities. To address this need, researchers developed...
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Oregon’s Upper Klamath Basin is one of the warmest watersheds in the Pacific Northwest. Despite its naturally warm waters, the basin supports abundant redband trout. These are some of the largest-bodied trout in the entire U.S., and are a culturally and economically important species, providing the last remaining subsistence fishery for the Klamath Tribes and drawing recreational anglers. The ability of this coldwater species to survive in one of the region’s warmest watersheds could hold valuable clues for conservation in the face of warming global temperatures, which represents one of the biggest threats to North America’s coldwater fish. Previous research has found that redband trout rely heavily on spring-fed...
This study examines the relative roles of climatic variables in altering annual runoff in the conterminous United States (CONUS) in the 21st century, using a monthly ecohydrological model (the Water Supply Stress Index model, WaSSI) driven with historical records and future scenarios constructed from 20 Coupled Model Intercomparison Project Phase 5 (CMIP5) climate models. The results suggest that precipitation has been the primary control of runoff variation during the latest decades, but the role of temperature will outweigh that of precipitation in most regions if future climate change follows the projections of climate models instead of the historical tendencies. Besides these two key factors, increasing air...
map background search result map search result map Climate Change and Peak Flows: Informing Managers About Future Impacts to Streamflow Dynamics and Aquatic Habitat Assessing the Usefulness of Vulnerability Assessments and Other Science-based Tools in Climate Adaptation Modeled snow-water-equivalent, absolute difference between seasonal peak historical and projected values under T2 climate change scenario, McKenzie River Basin, Oregon [full and clipped versions] Smoothed snow depth data, location, raw data with headers, and associated metadata for University of Idaho Experimental Forest Lawler Landing site Spoilt for Choice: A Review and Evaluation of Downscaled Climate Data for the Pacific Northwest Changing Fires, Changing Forests: The Effects of Climate Change on Wildfire Patterns and Forests in the Pacific Northwest Soil water infiltration in four biochar-amended soils from Oregon, 2018 How Will Coldwater Fish Survive in a Warming Future? Identifying Life-Stage Specific Use of Coldwater Refugia in the Klamath Basin and Willamette River Summaries of fish and habitat surveys for juvenile coho salmon in Mason Creek, tributary of the East Fork Lewis River, SW Washington, during summer of 2017 Summaries of fish and habitat surveys for juvenile coho salmon in Mason Creek, tributary of the East Fork Lewis River, SW Washington, during summer of 2017 Smoothed snow depth data, location, raw data with headers, and associated metadata for University of Idaho Experimental Forest Lawler Landing site Modeled snow-water-equivalent, absolute difference between seasonal peak historical and projected values under T2 climate change scenario, McKenzie River Basin, Oregon [full and clipped versions] How Will Coldwater Fish Survive in a Warming Future? Identifying Life-Stage Specific Use of Coldwater Refugia in the Klamath Basin and Willamette River Soil water infiltration in four biochar-amended soils from Oregon, 2018 Climate Change and Peak Flows: Informing Managers About Future Impacts to Streamflow Dynamics and Aquatic Habitat Changing Fires, Changing Forests: The Effects of Climate Change on Wildfire Patterns and Forests in the Pacific Northwest Spoilt for Choice: A Review and Evaluation of Downscaled Climate Data for the Pacific Northwest Assessing the Usefulness of Vulnerability Assessments and Other Science-based Tools in Climate Adaptation