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Radiative forcing induced by soot on snow is an important anthropogenic forcing affecting the global climate. In this study we simulated the deposition of soot aerosol on snow and the resulting impact on snowpack and the hydrological cycle in the western United States. A year-long simulation was performed using the chemistry version of the Weather Research and Forecasting model (WRF-Chem) to determine the soot deposition, followed by three simulations using WRF in meteorology-only mode, with and without the soot-induced snow albedo perturbations. The chemistry simulation shows large spatial variability in soot deposition that reflects the localized emissions and the influence of the complex terrain. The soot-induced...
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Areas established by the Legislature for management of forest, recreational and historical purposes; to protect and preserve natural habitat for fish and/or wildlife and special restrictions not specifically tied to any of the previously mentioned purposes. This shape file characterizes the geographic representation of land parcels within the State of Alaska contained by the Legislatively Designated Area category. It has been extracted from data sets used to produce the State status plats. This data set includes cases noted on the digital status plats up to one day prior to data extraction. Each feature has an associated attribute record, including a Land Administration System (LAS) file-type and file-number which...
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Areas established by the Legislature for management of forest, recreational and historical purposes; to protect and preserve natural habitat for fish and/or wildlife and special restrictions not specifically tied to any of the previously mentioned purposes. This shape file characterizes the geographic representation of land parcels within the State of Alaska contained by the Legislatively Designated Area category. It has been extracted from data sets used to produce the State status plats. This data set includes cases noted on the digital status plats up to one day prior to data extraction. Each feature has an associated attribute record, including a Land Administration System (LAS) file-type and file-number which...
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To understand potential climate change impacts on ecosystems, water resources, and numerous other natural and managed resources, climate change data and projections must be downscaled from coarse global climate models to much finer resolutions and more applicable formats. This project conducted comparative analyses to better understand the accuracy and properties of these downscaled climate simulations and climate-change projections. Interpretation, guidance and evaluation, including measures of uncertainties, strengths and weaknesses of the different methodologies for each simulation, can enable potential users with the necessary information to select and apply the models.
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The overarching goal of this research was to use site-specific data to develop local and regionally-applicable climate change models that inform management of tidal wetlands along the Pacific Northwest coast. The overarching questions were: (1) how do tidal marsh site characteristics vary across estuaries, and (2) does tidal marsh susceptibility to sea-level rise (SLR) vary along a latitudinal gradient and between estuaries? These questions are addressed in this data collection with three specific objectives: (1) measure topographical and ecological characteristics (e.g., elevation, tidal range, vegetation composition) for tidal marsh and intertidal mudflats, (2) model SLR vulnerability of these habitats, and (3)...
Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2012, Bolinas Lagoon, CA, CASC, California, All tags...
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In California, the near-shore area where the ocean meets the land is a highly productive yet sensitive region that supports a wealth of wildlife, including several native bird species. These saltmarshes, mudflats, and shallow bays are not only critical for wildlife, but they also provide economic and recreational benefits to local communities. Today, sea-level rise, more frequent and stronger storms, saltwater intrusion, and warming water temperatures are among the threats that are altering these important habitats. To support future planning and conservation of California’s near-shore habitats, researchers examined current weather patterns, elevations, tides, and sediments at these sites to see how they affect...
Categories: Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2012, Bolinas Lagoon, CA, CASC, California, All tags...
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Karst aquifers—formed when the movement of water dissolves bedrock—are critical groundwater resources in North America. Water moving through these aquifers carves out magnificent caves, sinkholes, and other formations. These formations are home to high concentrations of rare and endangered species, but the hydrological conditions that support these species can change rapidly. Managing these ecosystems into the future requires a better understanding of how climate, hydrology, and karst ecosystems interact. The objective of this project was to determine how species and ecosystems associated with karst might respond to future temperature and precipitation extremes and accompanying changes in groundwater levels and...
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Areas established by the Legislature for management of forest, recreational and historical purposes; to protect and preserve natural habitat for fish and/or wildlife and special restrictions not specifically tied to any of the previously mentioned purposes. This shape file characterizes the geographic representation of land parcels within the State of Alaska contained by the Legislatively Designated Area category. It has been extracted from data sets used to produce the State status plats. This data set includes cases noted on the digital status plats up to one day prior to data extraction. Each feature has an associated attribute record, including a Land Administration System (LAS) file-type and file-number which...


    map background search result map search result map Analysis of Downscaled Climate Simulations and Projections and Their Use in Decision Making for the Southwest Effects of Sea-Level Rise and Extreme Storms on California Coastal Habitats: Part 1 Evaluating the Impacts of Climate Extremes on Karst Hydrology and Species Vulnerability Sea-level rise projections for and observational data of tidal marshes along the California coast BLM REA CYR 2013 State Protected Areas in the Central Yukon BLM REA YKL 2011 YKL DV C Alaska LegislativelyDesignatedAreas BLM REA YKL 2011 State Parks in the Yukon River Lowlands - Kuskokwim Mountains - Lime Hills BLM REA YKL 2011 State Parks in the Yukon River Lowlands - Kuskokwim Mountains - Lime Hills BLM REA CYR 2013 State Protected Areas in the Central Yukon Sea-level rise projections for and observational data of tidal marshes along the California coast Effects of Sea-Level Rise and Extreme Storms on California Coastal Habitats: Part 1 Evaluating the Impacts of Climate Extremes on Karst Hydrology and Species Vulnerability Analysis of Downscaled Climate Simulations and Projections and Their Use in Decision Making for the Southwest BLM REA YKL 2011 YKL DV C Alaska LegislativelyDesignatedAreas