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This dissertation makes valuable contributions to hazard and disaster vulnerability assessment theory and methodology. Appendix A presents results of a national survey of state drought planning processes that examined and evaluated how state processes were assessing drought impacts and vulnerabilities, and how assessments were used to mitigate risk. While impact and vulnerability assessments have been useful for reactive, short-term mitigation, most were found to have not been used to develop pro-active and/or committed, long-term mitigation programs. To be useful for developing long-term planning and mitigation, assessments must involve more social scientists, a greater emphasis on second-, third-, etc., order impacts, and examining how systems are sensitive to drought exposure, and studying adaptive capacity. Appendix B adapts a political economy/human ecology and political ecology research framework and examines how regional historical, institutional and regional development patterns in central Arizona have contributed to the production of local drought vulnerability in rural Arizona during the 20th century. The study evaluates the applicability of a research framework developed in Third World settings, and resulted in valuable insights for developing state and county policy in Arizona to mitigate social, economic, and political-institutional drivers of drought vulnerability. Appendix C compliments the assessment in Appendix B by examining local drivers of drought vulnerability and conducting a comparative drought vulnerability analysis in two rural communities in northern Gila County, Arizona. The assessment found local differences in community water system vulnerabilities were driven by differences in capacity to adapt to climate variability and population growth. Differences in adaptive capacity, in turn, were driven by differences in local management, institutional factors, and economic incentives of private and public water systems. Together, the three appendices contribute practical and theoretical contributions for assessments conducted by state and local governments, non-governmental organizations, and academic research units that seek to assess and ultimately mitigate hazard and disaster vulnerability.
Climate change poses many challenges that affect society and the natural world. With these challenges, however, come opportunities to respond. By taking steps to adapt to and mitigate climate change, the risks to society and the impacts of continued climate change can be lessened. The National Climate Assessment, coordinated by the U.S. Global Change Research Program, is a mandated report intended to inform response decisions. Required to be developed every four years, these reports provide the most comprehensive and up-to-date evaluation of climate change impacts available for the United States, making them a unique and important climate change document. The draft Fourth National Climate Assessment (NCA4) report reviewed here addresses a wide range of topics of high importance to the United States and society more broadly, extending from human health and community well-being, to the built environment, to businesses and economies, to ecosystems and natural resources. This report evaluates the draft NCA4 to determine if it meets the requirements of the federal mandate, whether it provides accurate information grounded in the scientific literature, and whether it effectively communicates climate science, impacts, and responses for general audiences including the public, decision makers, and other stakeholders.