The CBE Inspire Fund Awardees for the 2024 cycle have been selected! Their project names and team members are outlined below. Title: Mycelium Grow Lab for Student-led Research Team: Gundula Proksch (Associate Professor, Architecture), Tyler Sprague (Associate Professor, Architecture) Title: Exhibition of the works of OUR: Office of (Un)certainty Research Team: Vikram Prakash (Professor, Architecture) Title: Emergence, Resilience, and Future(s) of Urban Informality in Seattle Team: Julie Johnson (Associate Professor, Landscape Architecture), Manish Chalana (Associate Professor, Urban Design and Planning)…
Department: Urban Design and Planning
Final day of Change Stories Residential Knowledge Exchange
On Thursday, March 21st, the Change Stories team gathered for the final day of shared learning sessions. The first session was focused on developing a theory of change for the project. Small group discussions returned to topics from previous days, including how to effectively apply the decolonial research approach that is at the core of this work together. Deconstructing the initially drafted theory of change, the group identified the importance of co-creating guiding materials for the project. We enjoyed our…
Identifying recurrent and persistent landslides using satellite imagery and deep learning: A 30-year analysis of the Himalaya
Tzu-Hsin Karen Chen, Mark E. Kincey, Nick J. Rosser, Karen C. Seto, Identifying recurrent and persistent landslides using satellite imagery and deep learning: A 30-year analysis of the Himalaya, Science of The Total Environment, Volume 922, 2024, 171161, ISSN 0048-9697, https://doi.org/10.1016/j.scitotenv.2024.171161.
Abstract
This paper presents a remote sensing-based method to efficiently generate multi-temporal landslide inventories and identify recurrent and persistent landslides. We used free data from Landsat, nighttime lights, digital elevation models, and a convolutional neural network model to develop the first multi-decadal inventory of landslides across the Himalaya, spanning from 1992 to 2021. The model successfully delineated >265,000 landslides, accurately identifying 83 % of manually mapped landslide areas and 94 % of reported landslide events in the region. Surprisingly, only 14 % of landslide areas each year were first occurrences, 55–83 % of landslide areas were persistent and 3–24 % had reactivated. On average, a landslide-affected pixel persisted for 4.7 years before recovery, a duration shorter than findings from small-scale studies following a major earthquake event. Among the recovered areas, 50 % of them experienced recurrent landslides after an average of five years. In fact, 22 % of landslide areas in the Himalaya experienced at least three episodes of landslides within 30 years. Disparities in landslide persistence across the Himalaya were pronounced, with an average recovery time of 6 years for Western India and Nepal, compared to 3 years for Bhutan and Eastern India. Slope and elevation emerged as significant controls of persistent and recurrent landslides. Road construction, afforestation policies, and seismic and monsoon activities were related to changes in landslide patterns in the Himalaya.
Keywords
Landslide inventory; Landslide evolution; Vegetation recovery; Multi-temporalSpatiotemporal analysis; Machine learning
Day 3 of the Change Stories Residential Knowledge Exchange
On Wednesday, March 20th, the Change Stories team began the day with a site visit to the Manzana del Cuidado de Cuidad Bolivar (Block of Care in Bolivar). The bus dropped off the group at the TransMiCable cable car, which connects the people on a steep hillside to transportation and other resources. The TransMiCable costs $2300 pesos per trip – around US$0.70, and includes 163 cabins with room for 10 passengers each. Before the TransMiCable connected these communities, the walk…
Day 2 of Change Stories Residential Knowledge Exchange
Tuesday, March 19th, the Change Stories residential knowledge exchange group experienced a full day of shared learning sessions. Morning sessions included full discussions from the US community based organization team members, followed by a discussion about decolonializing research. The discussions were full and many perspectives, methods, and expertises’ were shared from different teams and institutions. Tuesday included a beautiful walk to lunch at a restaurant on the Universidad de los Andes campus; the variety of building design on campus was…
Day one of Change Stories residential knowledge exchange event
Monday, March 18th at 8am, individuals gathered in the hotel lobby; many people were meeting for the first time, some were long-term colleagues or past co-workers. Some participates were able to explore the city for a day or two before official activities began. Travel experiences were shared, first experiences in Bogotá were highlighted; on Sunday, a group participated in the Bogotá weekly Ciclovía, and experienced a free public Zumba exercise class in a local park. Boarding the bus, many…
Change Stories project begins 4-day residential event in Bogotá, Colombia
The Change Stories project is an research project with collaboration from academics and their community-based partners in Belfast (Queen’s University), Northern Ireland, Belo Horizonte (Federal University of Minas Gerais Brazil and Observatory for Urban Health), Brazil, and Bogotá (Universidad de los Andes), Colombia. Additional collaborators include USA and Internationally-based advisory group members, who work within their communities. The project is funded by the Robert Wood Johnson Foundation. The 3 case study cities in the Change Stories project are Belfast, Northern…
Assistant Professor Karen Chen awarded NASA early career investigator award
Assistant Professor Karen Chen is awarded the NASA early career investigator award for the program in earth science. Chen’s project will explore heat impacts on health in urban settings in the Mediterranean. Chen is also affiliated with the Department of Environmental and Occupational Health, and CSDE at UW. Read more here.
Magdalena Haakenstad
Magdalena Haakenstad, Postdoctoral Scholar in Urban Planning for Health in the University of Washington Department of Urban Design and Planning in Seattle, Washington, USA. She is a cultural anthropologist interested in environmental health, means and strategies of political negotiation, visual communication in public space, and decolonizing methodologies. As a part of her research, she had an opportunity to work with historically marginalized communities in Mexico, the US and Slovakia on public art projects, storytelling, photo essays, and filmmaking to help amplify their voices. She holds a PhD in General Anthropology from Charles University in Prague, Czech Republic.
Legacies of redlining lead to unequal cooling effects of urban tree canopy
Jung, M. C., Yost, M. G., Dannenberg, A. L., Dyson, K., & Alberti, M. (2024). Legacies of redlining lead to unequal cooling effects of urban tree canopy. Landscape and Urban Planning, 246. https://doi.org/10.1016/j.landurbplan.2024.105028
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Abstract
Redlining—a racially discriminatory policy of systematic disinvestment established by the Home Owners’ Loan Corporation (HOLC) in the 1930s and continued until the late 1960s—still influences the contemporary landscape of cities in the US. While the heterogeneous distribution of land surface temperature and tree canopy cover between neighborhoods with different HOLC grades have been recently examined, the development of long-term and city-specific heat management strategies is still limited. Here, we explored the effect of redlining in Portland, Oregon, and Philadelphia, Pennsylvania, to assess its contemporary impact on climate equity. We performed a change analysis of land surface temperature and tree canopy area over the past and introduced mixed-effects models to test the intra- and inter-city differences in canopy cooling effects between the different HOLC grades. We found that (1) persistent temporal patterns of lower land surface temperatures and larger tree canopy areas are observed in higher HOLC grades, (2) greater green equity was achieved through contrasting temporal changes in tree canopy areas across HOLC grades in Portland and Philadelphia, and (3) opposite patterns exist between these cities, with stronger canopy cooling effects in neighborhoods with a Low HOLC grade in Portland and those with a High HOLC grade in Philadelphia. Differences in tree canopy change between the two cities over the past decade highlight potential influences of city-specific tree planting practices. Local planners should back tree planting initiatives to equitably mitigate urban heat exposure, considering historical redlining contexts and contemporary landscape features.
Keywords
Redlining; HOLC grade; Tree canopy; Land surface temperature; Tree equity