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As the impacts of climate change amplify, understanding the consequences for wetlands will be critical for their sustainable management and conservation, particularly in arid regions such as the Columbia Plateau. The depressional wetlands in this region (wetlands located in topographic depressions where water can accumulate) are an important source of surface water during the summer months. However, their health depends directly on precipitation and evaporation, making them susceptible to changes in temperature and precipitation. Yet few tools for monitoring water movement patterns (hydrology) in and out of these landscapes currently exist, hindering efforts to model how they are changing. This project provided...
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The Colorado River is the dominant water source for the southwestern United States, crossing through seven states before reaching Mexico. The river supplies water to approximately 36 million people, irrigates nearly six million acres of farmland within and beyond the basin, and contributes an estimated 26 billion dollars each year to the region’s recreational economy. Yet the Colorado River’s water supply is already fully allocated, meaning that the economic and environmental health of the region is closely tied to the river’s streamflow. Climate projections for the Southwest show a future marked by chronic drought and substantial reductions in streamflow. The region has already been impacted by climate change,...
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The goal of this project was to: (a) archive the relevant AR5 model output data for the southwest region; (b) downscale daily temperature and precipitation to 12 X 12 km cell spatial resolution over the Southwest; (c) assess the precision (degree of agreement) of the simulated models; (d) assess the direction and magnitude of change in projections between AR4 and AR5, as well as assess projections of key extreme climatic events (i.e., extreme drought, extreme seasonal precipitation, extreme high and low temperature events); and (e) assess critical ecosystem impacts (i.e., climate water deficit and fire; hydrological condition of major river systems; impacts on highly valued species).
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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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While home to many people and a rich diversity of unique plant and animal life, the U.S. territories of Guam and American Samoa are especially vulnerable to the effects of climate change because of their small size, geographical remoteness, and exposure to threats such as sea-level rise and increased storm surge. Developing predictions of future conditions is often the first step in helping decision makers and communities plan for change. However, to date, available global climate models have been too coarse in resolution to be useful for planning in the context of small, isolated islands. This project produced the first-ever set of high-resolution climate projections for Guam and American Samoa, providing information...
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The purpose of this project was to (1) provide an internally-­consistent set of downscaled projections across the western U.S., (2) include information about projection uncertainty, and (3) assess projected changes of hydrologic extremes. These objectives were designed to address decision support needs for climate adaptation and resource management actions. Specifically, understanding of uncertainty in climate projections - in particular for extreme events - is currently a key scientific and management barrier to adaptation planning and vulnerability assessment. The new dataset fills in the Northwest domain to cover a key gap in the previous dataset, adds additional projections (both from other global climate models...
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Natural climate variability can obscure or enhance long-term trends in experienced weather due to climate change. This can happen temporarily on timescales of a season to several years to a decade or two. Natural variability is poorly described and attributed to specific causes, contributing to uncertainty and misunderstandings about the nature of climate change that stakeholders and resource managers attempt to anticipate. There exists, therefore, a need to clarify the magnitude and causality of natural climate variability. This connection needs to be explained for locally-experienced weather and particularly for daily extreme events, whose seasonal behavior impacts both resources and imagination. Conversely, it...
    map background search result map search result map Understanding Future Extreme Water Events in the Pacific Northwest and Related Uncertainties to Inform Assessments of Vulnerability 21st Century High-Resolution Climate Projections for Guam and American Samoa Assessment of Available Climate Models and Projections for the Southwest Region Effects of Sea-Level Rise and Extreme Storms on California Coastal Habitats: Part 1 Projecting Future Streamflow in the Colorado River Basin Understanding and Communicating the Role of Natural Climate Variability in a Changing World Can We Conserve Wetlands Under a Changing Climate? Mapping Wetland Hydrology in the Columbia Plateau Can We Conserve Wetlands Under a Changing Climate? Mapping Wetland Hydrology in the Columbia Plateau Effects of Sea-Level Rise and Extreme Storms on California Coastal Habitats: Part 1 Projecting Future Streamflow in the Colorado River Basin Assessment of Available Climate Models and Projections for the Southwest Region Understanding and Communicating the Role of Natural Climate Variability in a Changing World Understanding Future Extreme Water Events in the Pacific Northwest and Related Uncertainties to Inform Assessments of Vulnerability 21st Century High-Resolution Climate Projections for Guam and American Samoa