Roger S. Pulwarty

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Daily station data from U.S. Department of Agriculture snowpack telemetry (SNOTEL) archives through the 1995/1996 season are used to examine the climatic characteristics of snow water equivalent (SWE) for the mountainous western United States and linkages with precipitation (PRE) and temperature. Quality control procedures were developed to screen outliers(More)
*This is the first of five papers in the “Understanding Changes in Weather and Climate Extremes” series. National Center for Atmospheric Research, Boulder, Colorado. National Climatic Data Center, Asheville, North Carolina. Illinois State Water Survey, Champaign, Illinois. Northern Illinois University, De Kalb, Illinois. The Pennsylvania State University,(More)
The Colorado River system exhibits the characteristics of a heavily over-allocated or 'closing water system'. In such systems, development of mechanisms to allow resource users to acknowledge interdependence and to engage in negotiations and agreements becomes necessary. Recently, after a decade of deliberations and environmental assessments, the Glen(More)
The U.S. Climate Variability and Predictability (CLIVAR) working group on drought recently initiated a series of global climate model simulations forced with idealized SST anomaly patterns, designed to address a number of uncertainties regarding the impact of SST forcing and the role of land–atmosphere feedbacks on regional drought. The runs were carried(More)
Societal impacts from weather and climate extremes, and trends in those impacts, are a function of both climate and society. United States losses resulting from weather extremes have grown steadily with time. Insured property losses have trebled since 1960, but deaths from extremes have not grown except for those due to floods and heat waves. Data on losses(More)
NEED FOR DECADAL PREDICTIONS. Prolonged drought in the American Southwest, increased hurricane activity in the tropical Atlantic since the late 1990s, changing fisheries regimes, extreme events, like the 2003 European heat wave, and the need to adapt to time-evolving climate change and increasing temperatures have raised concern among policy and decision(More)
The Social Construction of Disaster Disaster is widely perceived as an event beyond human control. The capricious hand of fate has moved against unsuspecting human communities, creating massive destruction and despair.[i] The sudden randomness of the event accentuates the cruelty of its effects, as surely the victims would have acted differently, had they(More)
There is increasing concern worldwide about the ineffectiveness of current drought management practices that are largely based on crisis management. These practices are reactive and, therefore, only treat the symptoms (impacts) of drought rather than the underlying causes for the vulnerabilities associated with impacts. Through the adoption of national(More)
I nforming the extensive preparations needed to manage climate risks, avoid damages, and realize emerging opportunities is a grand challenge for climate change science. U.S. President Obama underscored the need for this research when he made climate preparedness a pillar of his climate policy. Adaptation improves preparedness and is one of two broad and(More)
Climate variability and change significantly influences the health, prosperity, and well-being of individuals, societies, and the environment. For the United States this has been demonstrated, most recently, by several high impact events such as the 1997–98 El Niño event, the hurricane seasons of 2004 and 2005, the ongoing drought since 1999 in the(More)