Su, Shu; Li, Xiaodong; Zhu, Chen; Lu, Yujie; Lee, Hyun Woo. (2021). Dynamic Life Cycle Assessment: A Review of Research for Temporal Variations in Life Cycle Assessment Studies. Environmental Engineering Science, 38(11), 1013 – 1026.
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Abstract
Life cycle assessment (LCA) is a comprehensive and important environmental management tool around the world. However, lacking temporal information has been a major challenge. In the past decade, dynamic LCA (DLCA), which incorporates temporal variations into assessment, has been an emerging research topic with increasing publications. A timely comprehensive review is needed to present current progress and discuss future directions. This article reviews 144 DLCA articles quantitatively and qualitatively. A bibliometric approach is adopted to conduct co-occurrence analysis and cluster analysis of DLCA studies. The research progress, approaches, and limitations of three temporal variation types (i.e., dynamic life cycle inventory, dynamic characterization factors, and dynamic weighting factors) in DLCA studies are systematically analyzed and discussed. It is concluded that: (1) dynamic inventory analysis is usually conducted by collecting time-differentiated data at each time step. Field monitoring, simulation, scenario analysis, and prediction based on historical data are common approaches. (2) Dynamic characterization studies primarily focus on two impact categories: global warming and toxicity. More studies are in need. (3) Various methods and indicators (i.e., dynamic pollution damage cost, temporal environmental policy targets, and discount rates) are used to solve the dynamic weighting issue, and they have specific limitations. Finally, three interesting topics are discussed: comparison between dynamic and static results, the large data amount issue, and the trend of tools development. This review offers a holistic view on temporal variations in DLCA studies and provides reference and directions for future dynamic studies.
Keywords
Literature Reviews; Cluster Analysis (statistics); Global Warming; Environmental Management; Discount Prices; Emission Inventories; Dynamic Characterization; Dynamic Inventory Analysis; Dynamic Weighting; Environmental Impact; Life Cycle Assessment; Temporal Variation; Cluster Analysis; Life Cycle; 'current; Dynamic Inventory Analyse; Dynamic Lca; Environmental Management Tool; Inventory Analysis; Research Topics; Temporal Information; Dependent Climate Impact; Greenhouse-gas Emission; Biogenic Carbon; Assessment Framework; Fresh-water; Electricity-generation; Energy Efficiency; Wheat Production; Embodied Energy; Time
Karvonen, Andrew; Yocom, Ken. (2011). The Civics Of Urban Nature: Enacting Hybrid Landscapes. Environment & Planning A, 43(6), 1305 – 1322.
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Abstract
Urban nature is typically managed through top-down, bureaucratic, and expert-driven approaches that tend to rationalize and simplify the interactions between humans and their surroundings. In the last few decades, there has been a significant push in cultural geography and the design disciplines to develop a relational ontology of urban nature, a perspective that emphasizes the hybrid connections between humans and nonhumans, built and unbuilt, social and natural. This perspective offers new and exciting ways of conceptualizing urban nature but it has not produced alternatives to conventional governance. In other words, thinking differently about urban nature has yet to produce different ways of interacting with it. In this paper we argue that civic environmentalism can enact a relational ontology by engaging urban residents in processes of democratic deliberation and action in the reworking of urban nature. We illustrate this approach with a case study of a community-led project to construct a pedestrian trail along an urban creek in Seattle, Washington. The example demonstrates how the concept of civic environmentalism embraces a relational perspective of urban nature, while also producing generative forms of political action.
Keywords
Cities & Towns; Ontology; Deliberation; Environmentalism; Trails; Rivers; Washington (state); Seattle (wash.)
Jon, Ihnji; Huang, Shih-Kai; Lindell, Michael K. (2019). Perceptions and Expected Immediate Reactions to Severe Storm Displays. Risk Analysis, 39(1), 274 – 290.
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Abstract
The National Weather Service has adopted warning polygons that more specifically indicate the risk area than its previous county-wide warnings. However, these polygons are not defined in terms of numerical strike probabilities (p(s)). To better understand people's interpretations of warning polygons, 167 participants were shown 23 hypothetical scenarios in one of three information conditions-polygon-only (Condition A), polygon + tornadic storm cell (Condition B), and polygon + tornadic storm cell + flanking nontornadic storm cells (Condition C). Participants judged each polygon's p(s) and reported the likelihood of taking nine different response actions. The polygon-only condition replicated the results of previous studies; p(s) was highest at the polygon's centroid and declined in all directions from there. The two conditions displaying storm cells differed from the polygon-only condition only in having p(s) just as high at the polygon's edge nearest the storm cell as at its centroid. Overall, p(s) values were positively correlated with expectations of continuing normal activities, seeking information from social sources, seeking shelter, and evacuating by car. These results indicate that participants make more appropriate p(s) judgments when polygons are presented in their natural context of radar displays than when they are presented in isolation. However, the fact that p(s) judgments had moderately positive correlations with both sheltering (a generally appropriate response) and evacuation (a generally inappropriate response) suggests that experiment participants experience the same ambivalence about these two protective actions as people threatened by actual tornadoes.
Keywords
Decision-making; Tornado; Risk; Communication; Numeracy; Residents; Shelter; Events; Protective Actions; Risk Perceptions; Tornado Warning Polygons; Judgments; Tornadoes; Meteorological Services; Storms; Lymphocytes B; Polygons; Emergency Warning Programs; Evacuation; Displays; Inappropriateness; Weather; Warnings; Conditions; Ambivalence
Taufen, Anne; Yocom, Ken. (2021). Transitions In Urban Waterfronts: Imagining, Contesting, And Sustaining The Aquatic/terrestrial Interface. Sustainability, 13(1).
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Abstract
Urban waterfronts represent hybrid locations of ecological, economic, and social zones of transition and dispersal, spatially reified between land and water. Yet, through advancements in technology and the emergence of globally linked economies, the structure and function of urban waterfronts as economic and industrial drivers is becoming increasingly complex. As cities seek to redevelop their waterfronts in response to these changes, recent research and scholarship has focused on understanding the ecological, social, and economic benefits derived from urban waterfronts. This research reveals that their benefits are unevenly distributed among local and regional populations as sites of accumulated inequity and inaccessibility that are generative for only a relatively small percentage of the people living in a metropolitan area. Set within this paradoxical nexus, this paper frames a call to scientists, planners, academics, and waterfront activists to expand urban waterfront research from an indicator and benefits model to incorporate three conceptual tools for better understanding key dimensions of waterfront reclamation within the context of green infrastructure research: urban hybridity, functional performance and hierarchies of access. We explore these key dimensions in relation to the waterfront redevelopment of Tacoma, Washington, USA. By acknowledging the hybridity of urban waterfronts, we illustrate that their relative performance and accessibility require ongoing empirical study and practical intervention. Our theoretical explorations plot some of the potential areas of investigation for examining the structural and functional transitions of urban waterfronts as critical locations for green infrastructure development for the 21st century.
Keywords
Place Attachment; Community Participation; Cities; Justice; Indicators; Challenges; Resilience; Governance; Space; Urban Waterfronts; Complexity; Urban Hybridity; Functional Performance; Hierarchies Of Access; Public Access; Stormwater Management; Infrastructure; Reclamation; Green Aspects; Waterfront Development; Urban Areas; Terrestrial Environments; Waterfronts; Economics; Hierarchies; Redevelopment; Regulation; Dispersal; Economic Activity; Shorelines; Regions; Terrestrial Ecosystems; Sustainable Development; Structure-function Relationships; Ports; Rivers; Metropolitan Areas; Urbanization; United States--us
Green Futures Lab is dedicated to supporting interdisciplinary research and design that advances our understanding of, visions for, and design of a vital and ecologically sustainable public realm. The Lab’s goal is to develop green infrastructure solutions within a local and global context.
The Green Futures Lab explores and promotes planning and design for active transportation, including cycling and pedestrian environments; conducts research and design projects that aim to improve the ability of public spaces to build community and provide recreation and revitalization; works to improve the health of our water bodies and sustain our water resources through green infrastructure innovations, ecosystem restoration, and open space protection; innovates strategies for creating quality habitat, particularly within urban environments where it is most limited; and explores low-carbon urban design solutions to mitigate climate change.
Working with the University of Washington, local communities, and international partners, the lab provides planning, design, and education for healthy, equitably accessible, and regenerative urban and ecological systems.
The Circular City + Living Systems Lab (CCLS) is an interdisciplinary group of faculty and students applying principles of research and design to investigate transformative strategies for future cities that are adaptive and resilient while facing climate change.
Synthesizing expertise from architecture, landscape architecture, engineering, planning, biology, and ecology, the Lab’s innovative research spans core topics such as the integration of living systems in the built environment to produce and circulate resources within the food-water-energy nexus, and spatial design responses to COVID-19.
Ongoing work at the CCLS includes research on urban integration of aquaponics, urban and building-integrated agriculture, circular economies in the food industry, algae production, and green roof performance.
Monica Huang is a research engineer for the Carbon Leadership Forum at the University of Washington with expertise in environmental life cycle assessment (LCA). Recent research topics include the environmental impact of housing, optimizing tall wood structures, and developing data on the environmental impact of earthquake damage. She was also the lead author for a guide on the use of LCA in design and construction practice. Past research experience includes diverse topics such as astronomy, electronic waste, and sea level rise. As a graduate student, she developed the Port of Seattle’s first study on the impacts of sea level rise on seaport structures.
Christine Bae is an Associate Professor in the Department of Urban Design and Planning at the University of Washington, Seattle. She received her Ph.D. in Urban and Regional Planning from the University of Southern California. Her primary areas of interest are transportation and the environment; land use, growth management and urban sprawl; urban regeneration; environmental equity and justice; and international planning and globalization. She recently co-authored an article on measuring pedestrian exposure to PM2.5 in the Seattle, Washington, International District. She teaches a course “Mega City Planning”, in which she leads a group of students to Seoul, South Korea for two weeks in spring quarter. She is currently the West Representative for the Association of Collegiate Schools of Planning, and a Board Member for the Western Regional Science Association. She is also the recipient of an on-going Sea Grant for The Economic and Environmental Impacts of Moorage Marinas in the West Coast.
Marina Alberti is Professor of Urban and Environmental Planning in the Department of Urban Design and Planning at the University of Washington. She directs the Urban Ecology Research Laboratory and lead the International Research Network on Urban Eco-Evolutionary Dynamics. She teaches courses in Urban Science, Urban Ecology, Environmental Planning, Research Design, Geographic Information Systems, and Group Dynamic and Conflict resolution. Alberti’s research interests are in urban ecology and evolution. Her studies focus on the interactions between urban patterns and ecosystem function, urban signatures of evolutionary change, and the properties of cities that enhance their resilience and transformative capacity. She also leads research on urban ecological modeling, scenario planning, and urban ecological metrics to monitor progress and inform policy-making and planning. In her book Cities That Think like Planets (UW Press 2016), Alberti advances a science of cities that work on a planetary scale and link unpredictable dynamics to the potential for socio-ecological innovation.
Ken Yocom is the Interim Dean of the College of Built Environments and a Professor in the Department of Landscape Architecture. He also has an adjunct appointment in the Department of Urban Design and Planning, serves on the steering committee of the PhD in the Built Environments Program, and is core faculty for the Interdisciplinary PhD Program in Urban Design and Planning within the College of Built Environments. He primarily teaches seminar and studio courses in theory, ecology, and urban design.
Trained as an ecologist and landscape architect with professional experience in the environmental consulting and construction industries, he is a graduate of our MLA program (2002). Ken also earned his PhD from the Program in the Built Environments (2007), where he researched nature and society relations through the contemporary context of urban ecological restoration practices.
Ken’s current research, teaching, and practice explore the convergence of urban infrastructure and ecological systems through adaptive design approaches that serve to demystify emerging strategies and technologies for sustainable and resilient development. More specifically, he investigates how water –in all its forms- shapes the past to future functions and patterns of our built environments. He has written extensively on the themes developed from his work including two books, Ecological Design (with Nancy Rottle, Bloomsbury, 2012) and NOW Urbanism: The Future City is Here (with Jeff Hou, Ben Spencer, and Thaisa Way (editors), Routledge, 2014). He has also written for professional practice and scholarly publications on issues of global biodiversity, urban environmental governance, ecological design, and contemporary nature and society relations in the urban context.
In his teaching, Ken emphasizes the development of a holistic and integrated approach that embraces the complexity of our built environments, yet discreetly explores the intersections and overlaps that frame our understanding and appreciation of particular places. He has a strong belief that collaboratively, the allied design professions can act as catalysts in recognizing, utilizing, and transforming the inherent potential of our built environments into places that are socially equitable, environmentally just, and economically sustainable.