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Future changes in the number of dry days per year can either reinforce or counteract projected increases in daily precipitation intensity as the climate warms. We analyze climate model projected changes in the number of dry days using 28 coupled global climate models from the Coupled Model Intercomparison Project, version 5 (CMIP5). We find that the Mediterranean Sea region, parts of Central and South America, and western Indonesia could experience up to 30 more dry days per year by the end of this century. We illustrate how changes in the number of dry days and the precipitation intensity on precipitating days combine to produce changes in annual precipitation, and show that over much of the subtropics the change...
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In the dry southwestern United States, snowmelt plays a crucial role as a water source for people, vegetation, and wildlife. However, snow droughts significantly lower snow accumulations, disrupting these critical water supplies for local communities and ecosystems. Despite its large influence on land- and water-resource management, snow drought has only recently been properly defined and its historical distribution and effects on key natural resources are essentially unknown. To remedy this serious knowledge gap, project researchers are examining the causes, effects, and forecastability of snow drought to provide needed scientific information and guidance to planners and decision makers. The central goals of...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2017,
CASC,
Completed,
Drought,
Drought, All tags...
Drought, Fire and Extreme Weather,
Drought, Fire and Extreme Weather,
Fire,
Fire,
Other Water,
Other Water,
Projects by Region,
Rivers, Streams and Lakes,
Rivers, Streams and Lakes,
Southwest,
Southwest CASC,
Water, Coasts and Ice,
Water, Coasts and Ice,
climate change,
drought,
extremes,
forest fire,
management,
snow,
streamflow,
water,
water planning,
water resources,
wildland fire, Fewer tags
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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.
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2012,
CASC,
Completed,
Data Visualization & Tools,
Data Visualization & Tools, All tags...
Downscaling,
Federal,
Projects by Region,
Science Tools for Managers,
Science Tools for Managers,
Southwest,
Southwest,
Southwest CASC,
bcsd,
climate,
climate change,
downscale,
downscaled climate projections,
dynamical,
ecosystem,
gcm,
maca,
model,
modeling,
multiple,
roms,
simulation,
statistical,
water,
wrf, Fewer tags
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This project links climate, hydrological, and ecological changes over the next 30 years in a Great Basin watershed. In recent years, climate variability on annual and decadal time scales has been recognized as greater than commonly perceived with increasing impacts on ecosystems and available water resources. Changes in vegetation distribution, composition and productivity resulting from climate change affect plant water use, which in turn can alter stream flow, groundwater and eventually available water resources. To better understand these links, project researchers implemented two computer-based numeric models in the Cleve Creek watershed in the Schell Creek Range, east of Ely, Nevada. The application of the...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2013,
CASC,
Cleve Creek,
Climate,
Completed, All tags...
Drought,
Drought,
Drought, Fire and Extreme Weather,
Drought, Fire and Extreme Weather,
Federal,
Great Basin,
Landscapes,
Landscapes,
NV,
Other Landscapes,
Other Landscapes,
Pinyon/Juniper,
Plants,
Plants,
Projects by Region,
Rivers, Streams and Lakes,
Rivers, Streams and Lakes,
Southwest,
Southwest CASC,
Water, Coasts and Ice,
Water, Coasts and Ice,
Wildlife and Plants,
Wildlife and Plants,
carbon flux,
desert shrub,
downscale,
drought,
ecology,
evaporation,
gcm,
great basin,
hydrology,
lai,
maps,
model,
phenology,
plants,
pluvial,
population growth,
precipitation,
productivity,
rhessys,
sage brush,
snow,
soil moisture,
temperature,
transpiration,
vegetation,
water, Fewer tags
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To better understand and predict variability and recent changes in the responses of rivers, groundwater, and water/living resources, mostly in the West, to natural and human-induced climatic influences.
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