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Project involves analyzing datasets using two measures: Spatial similarity of the distributed precipitation and temperature fields of the study datasets Implications on hydrologic modeling We will then provide guidance on the choice of datasets for statistical downscaling of GCM outputs used in different types of scale-dependent planning assessments. We will evaluate these differences from a hydrological standpoint at specific Reclamation basins: Animas at Durango, Colorado; Snake at Heise, Idaho; Sacramento at Redding, California; Salt at Chrysotile, Arizona; Yellowstone River at Billings, Montana; and Colorado River at Lees Ferry Utah and Arizona. The analysis will indicate whether the choice of forcing a...
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This dataset contains 4222 point locations corresponding to 136 weather station locations in or bordering Wyoming. Each of the 136 weather stations includes 31 points, with the same latitude longitude, for different years (1970-2000). Each point contains attributes for total precipitation in inches for each month, as well as an annual precipitation for the year. The data were obtained from the Western Regional Climatic data website.
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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,...
Atmospheric processes and phenomena. For example, resources describing cloud cover, weather, atmospheric conditions, climate change, and precipitation.
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Invasion of exotic annual grass (EAG), such as cheatgrass (Bromus tectorum), red brome (Bromus rubens), and medusahead (Taeniatherum caput-medusae), could have irreversible degradation impact to arid and semiarid rangeland ecosystems in the western United States. The distribution and abundance of these EAG species are highly influenced by weather variables such as temperature and precipitation. We set out to develop a machine learning modelling approach using a lightGBM algorithm to predict how changes in annual and immediate past precipitation regimes impact the abundance of EAG in the study area. The predictive model primarily utilized edaphic and weather variables and a seed source proxy from previous years to...
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The Navajo Nation covers over 70,000 km2 in the Four Corners area of Utah, Arizona and New Mexico. Climate data from the Navajo Nation have been both sparse and sporadic during the past 100 years, and have been limited to daily data from a handful of National Weather Service Cooperative Observer sites. Climate science researchers have identified the area in and around the Navajo Nation as among the most climate-data poor in the region, and the need to remedy this situation has been identified by both the Desert LCC and the Southern Rockies LCC. This USGS Arizona Water Science Center digitized paper climate data records recorded between 1988 and 1995, including portions of 25 volumes of fan-fold line-printer computer...
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Native grasslands have been altered to a greater extent than any other biome in North America. The habitats and resources needed to support breeding performance of grassland birds endemic to prairie ecosystems are currently threatened by land management practices and impending climate change. Climate models for the Great Plains prairie region predict a future of hotter and drier summers with strong multiyear droughts and more frequent and severe precipitation events. We examined how fluctuations in weather conditions in eastern Colorado influenced nest survival of an avian species that has experienced recent population declines, the Mountain Plover (Charadrius montanus). Nest survival averaged 27.2% over a 7-yr...
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FY2015Researchers conducted interviews with sagebrush land managers from Oregon, Idaho and Utah to identify the most relevant variables, threats and management strategies relevant to their specific sagebrush management areas. Managers were also asked to assess a series of web-based climate tools, providing feedback about what features of the tools were most intuitive, interesting and useful, or complicated, unnecessary, and in need of revision. Results from the first phase of the project suggested several directions to improve existing climate tools.
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This map shows the projected percentage of suitable prescribed burning days in the south-eastern United States during the winter season (December to February) for the years 2010 to 2099.
    map background search result map search result map Precipitation station locations corresponding to weather station locations in or bordering Wyoming Understanding How Different Versions of Distributed Historical Weather Data Affect Hydrologic Model Calibration and Climate Projections Downscaling - BOR Project, FY2011 Climatology Meteorology Atmosphere Drought and Cooler Temperatures Are Associated with Higher Nest Survival in Mountain Plovers Projecting Future Streamflow in the Colorado River Basin Navajo Nation Climate Data Recovery Developing Usable Climate Tools for Land Managers Percent Suitable Prescribed Burn Days - Winter 2010-2099 - RCP 4.5 Predicted exotic annual grass abundance in rangelands of the western United States using various precipitation scenarios for 2022 Understanding How Different Versions of Distributed Historical Weather Data Affect Hydrologic Model Calibration and Climate Projections Downscaling - BOR Project, FY2011 Navajo Nation Climate Data Recovery Precipitation station locations corresponding to weather station locations in or bordering Wyoming Developing Usable Climate Tools for Land Managers Drought and Cooler Temperatures Are Associated with Higher Nest Survival in Mountain Plovers Projecting Future Streamflow in the Colorado River Basin Percent Suitable Prescribed Burn Days - Winter 2010-2099 - RCP 4.5 Predicted exotic annual grass abundance in rangelands of the western United States using various precipitation scenarios for 2022 Climatology Meteorology Atmosphere