Infrastructure & Investment

The preeminent conference for the advancement of Earth and space sciences, the AGU (American Geophysical Union) Fall Meeting draws more than 25,000 attendees from over 100 countries each year to share research findings and identify innovative solutions to complex problems. Organized around the theme “Science Leads the Future,” this year’s AGU Fall Meeting will take place in Chicago and online on December 12 - 16.

Abstract: Physical and transition risks across socio-environmental systems are becoming increasingly complex, multi-faceted, compounding, and span unjust societal landscapes. Multi-Sector Dynamics (MSD) explores the existence and extent that human and natural systems co-exist, interact, and co-evolve. To meet this need, we have developed an open-science, visualization platform that harmonizes, combines, overlays, and diagnoses landscapes of risks and inequities across socio-economics, human health, biodiversity, demographics, as well as the natural, managed, and built environmental systems. The platform’s current geographic focus allows for an MSD-inspired perspective that resolves combinatory-risk landscapes across the United States at the county level. Combinatory-risk indices from weighted composites of a variety of indicators are created and based on user specifications to areas-of-concern.

As a visual example – we demonstrate where “hotspots” of environmental risks compound. As separate mappings (Figure 1a), current risks to land, water availability and quality, and exposure to poor air quality exhibit features not discernably co-located. The resultant landscape of combinatory risk (Figure 1b) exhibits discernable, prominent “hotspots” across California, the Mississippi River basin, the Southeast, and Mid-Atlantic states. Concurrently, another combined transition-risk mapping indicates that the lower Mississippi River contains the largest portion of fossil energy employment along with high levels of poverty and unemployment. This highlights a potential connection between contrasting regional effects of a low-carbon energy transition. Other examples will demonstrate similar connections and compounding landscapes. Quantitative metrics will show the profound effect the incorporation of socio-demographics has on the “top 5 list” of states that experience the most severe compounding physical and transition risks, and underscore the importance of the choice in these metrics are for the interpretation and assessment of priorities into deep-dive analysis and actions.

Abstract: A wide range of electric generation technologies can play a major role in future power production in the heartland of the U.S. for consumption. Different generation technologies have different vulnerabilities to a changing climate and its extremes. The cooling cycle of thermal power plants are vulnerable to rising summer temperatures that increase cooling water temperatures and subsequently add cost and possible curtailments. Drought could limit hydropower availability and further limit thermoelectric cooling. Photovoltaics are less efficient in higher temperatures, and wind resources may change or shift with the changing climate. Rising temperatures are also likely to increase summer peak demands as a result of more intense and broad use of air conditioning, even in currently cooler climates. In addition, high temperatures and high demand pose risks for failure of critical grid infrastructure, such as large power transformers. This combination of stressors raises important research questions: What is the risk of a “perfect storm” that could lead to a tipping point failure of the power system? Are some evolutions of the power sector more or less vulnerable to climate change?

As a preliminary investigation, we review existing word in the area and consider a range of realistic power generation scenarios in the US Heartland (Figure 1). We evaluate the sensitivities of various technologies and demand to climate change and associated extremes, and consider the possible range of changes in their production. We then examine the possible effects on the evolution of the power sector by mid-century in various scenarios, taking a Multi-Sectoral Dynamics perspective by focusing on the interaction of sectors (different supply technologies and different demand sectors) and the effects of multiple stressors (both gradual climate change and changes in extreme events) on the systems. Preliminarily, summer months are a more likely period for a potential “perfect storm,” where a combination of extreme heat, drought, and stagnant meteorological conditions could have significant negative effects on all technologies, while increasing peak power demands across the region. Our results are expected to help develop a research agenda to better resolve future vulnerabilities and suggest strategies to increase power sector resilience.

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