Open Access. Powered by Scholars. Published by Universities.®

Urban Studies and Planning Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 19 of 19

Full-Text Articles in Urban Studies and Planning

Forest Structure And Composition Alleviate Human Thermal Stress, Loïc Gillerot, Dries Landuyt, Rachel Oh, Winston T. L. Chow, Et Al Dec 2022

Forest Structure And Composition Alleviate Human Thermal Stress, Loïc Gillerot, Dries Landuyt, Rachel Oh, Winston T. L. Chow, Et Al

Research Collection College of Integrative Studies

Current climate change aggravates human health hazards posed by heat stress. Forests can locally mitigate this by acting as strong thermal buffers, yet potential mediation by forest ecological characteristics remains underexplored. We report over 14 months of hourly microclimate data from 131 forest plots across four European countries and compare these to open-field controls using physiologically equivalent temperature (PET) to reflect human thermal perception. Forests slightly tempered cold extremes, but the strongest buffering occurred under very hot conditions (PET >35°C), where forests reduced strong to extreme heat stress day occurrence by 84.1%. Mature forests cooled the microclimate by 12.1 to …


Harmonized Gap-Filled Datasets From 20 Urban Flux Tower Sites, Matthew Lipson, Sue Grimmond, Martin Best, Winston T. L. Chow Nov 2022

Harmonized Gap-Filled Datasets From 20 Urban Flux Tower Sites, Matthew Lipson, Sue Grimmond, Martin Best, Winston T. L. Chow

Research Collection College of Integrative Studies

A total of 20 urban neighbourhood-scale eddy covariance flux tower datasets are made openly available after being harmonized to create a 50 site–year collection with broad diversity in climate and urban surface characteristics. Variables needed as inputs for land surface models (incoming radiation, temperature, humidity, air pressure, wind and precipitation) are quality controlled, gap-filled and prepended with 10 years of reanalysis-derived local data, enabling an extended spin up to equilibrate models with local climate conditions. For both gap filling and spin up, ERA5 reanalysis meteorological data are bias corrected using tower-based observations, accounting for diurnal, seasonal and local urban effects …


Outdoor Thermal Comfort Research In Transient Conditions: A Narrative Literature Review, Yuliya Dzyuban, Graces N. Y. Ching, Sin Kang Yik, Adrian J. Tan, Shreya Banerjee, Peter Jay Crank, Winston T. L. Chow Oct 2022

Outdoor Thermal Comfort Research In Transient Conditions: A Narrative Literature Review, Yuliya Dzyuban, Graces N. Y. Ching, Sin Kang Yik, Adrian J. Tan, Shreya Banerjee, Peter Jay Crank, Winston T. L. Chow

Research Collection College of Integrative Studies

In recent years, urban planners and designers are paying greater attention to Outdoor Thermal Comfort (OTC) studies due to the imminent threat of the Urban Heat Island and climate change on human health. Historically, indoor thermal comfort research assumed steady-state conditions, centralizing on the concept of thermal neutrality to determine optimal environmental parameters. Such research pivoted to investigating how non-steady-state, transient environmental conditions influence comfort. Recent studies underscore the usefulness of positive alliesthesia in providing a productive framework for OTC evaluation. In this article we first clarify the concepts related to thermal comfort-related terms, scales, and models in the literature. …


Integrated Assessment Of Urban Overheating Impacts On Human Life, N. Nazarian, E. S. Krayenhoff, B. Bechtel, D. M. Hondula, R. Paolini, J. Vanos, T. Cheung, Winston T. L. Chow, Et Al Aug 2022

Integrated Assessment Of Urban Overheating Impacts On Human Life, N. Nazarian, E. S. Krayenhoff, B. Bechtel, D. M. Hondula, R. Paolini, J. Vanos, T. Cheung, Winston T. L. Chow, Et Al

Research Collection College of Integrative Studies

Urban overheating, driven by global climate change and urban development, is a major contemporary challenge that substantially impacts urban livability and sustainability. Overheating represents a multifaceted threat to the well-being, performance, and health of individuals as well as the energy efficiency and economy of cities, and it is influenced by complex interactions between building, city, and global scale climates. In recent decades, extensive discipline-specific research has characterized urban heat and assessed its implications on human life, including ongoing efforts to bridge neighboring disciplines. The research horizon now encompasses complex problems involving a wide range of disciplines, and therefore comprehensive and …


A Climate Resilience Research Renewal Agenda: Learning Lessons From The Covid-19 Pandemic For Urban Climate Resilience, Mark Pelling, Winston T. L. Chow, Eric Chu, Richard Dawson, David Dodman, Arabella Fraser, Bronwyn Hayward, Luna Khirfan, Timon Mcphearson, Anjal Prakash, Gina Ziervogel Aug 2022

A Climate Resilience Research Renewal Agenda: Learning Lessons From The Covid-19 Pandemic For Urban Climate Resilience, Mark Pelling, Winston T. L. Chow, Eric Chu, Richard Dawson, David Dodman, Arabella Fraser, Bronwyn Hayward, Luna Khirfan, Timon Mcphearson, Anjal Prakash, Gina Ziervogel

Research Collection School of Social Sciences

Learning lessons from the COVID-19 pandemic opens an opportunity for enhanced research and action on inclusive urban resilience to climate change. Lessons and their implications are used to describe a climate resilience research renewal agenda. Three key lessons are identified. The first lesson is generic, that climate change risk coexists and interacts with other risks through overlapping social processes, conditions and decision-making contexts. Two further lessons are urban specific: that networks of connectivity bring risk as well as resilience and that overcrowding is a key indicator of the multiple determinants of vulnerability to both COVID-19 and climate change impacts. From …


Fact Sheet - Human Settlements: Climate Change Impacts And Risks, Winston T. L. Chow, Richard Dawson, Bruce Glavovic, Marjolijn Haasnoot, Mark Pelling, William Solecki Feb 2022

Fact Sheet - Human Settlements: Climate Change Impacts And Risks, Winston T. L. Chow, Richard Dawson, Bruce Glavovic, Marjolijn Haasnoot, Mark Pelling, William Solecki

Research Collection College of Integrative Studies

This regional factsheet on cities and human settlements gives a snapshot of the key findings of the Sixth Assessment Report: Climate Change 2022 - Impacts. Adaptation and Vulnerability, distilled from the relevant Chapters and Cross-Chapter Papers, the Technical Summary and the Global to Regional Atlas.


Focus On Sustainable Cities: Urban Solutions Toward Desired Outcomes, M. Georgescu, M. Arabi, Winston T. L. Chow, E. Mack, K. C. Seto Nov 2021

Focus On Sustainable Cities: Urban Solutions Toward Desired Outcomes, M. Georgescu, M. Arabi, Winston T. L. Chow, E. Mack, K. C. Seto

Research Collection School of Social Sciences

Urbanization represents the single most impactful and long-lasting transformation of the Earth system since the dawn of civilization. Cities are simultaneously locations of innovation, social connectivity, and wealth, but they also create local-to-global environmental degradation and socioeconomic disparities. For example, food provision for cities has required significant land-use change and fertilizer input, has altered regional climate, biogeochemical cycles, and degraded marine and landscapes through biodiversity loss, algal blooms and fish kills. To maintain urban livelihoods and the provision of goods and services, cities require vast amounts of energy (e.g. to provide access to transport, cooling systems), which are massive producers …


Responding To Extremes: Managing Urban Water Scarcity In The Late Nineteenth-Century Straits Settlements, Fiona Williamson Oct 2020

Responding To Extremes: Managing Urban Water Scarcity In The Late Nineteenth-Century Straits Settlements, Fiona Williamson

Research Collection School of Social Sciences

In 1877, the major towns of the Straits Settlements - Singapore, George Town, Penang Island and Malacca - suffered a drought of exceptional magnitude. The drought’s natural instigator was the El Niño phase of the El Niño Southern Oscillation (ENSO), a climatic phenomenon then not understood by contemporary observers. The 1877 event has been explored in some depth for countries including India, China and Australia. Its impact on Southeast Asia however is less well-known and the story of how the event unfolded in Singapore and Malaysia has not been told. This paper explores how the contemporary British government responded to …


Central Inspection Teams And The Enforcement Of Environmental Regulations In China, C. Xiang, Terry Van Gevelt Oct 2020

Central Inspection Teams And The Enforcement Of Environmental Regulations In China, C. Xiang, Terry Van Gevelt

Research Collection College of Integrative Studies

Despite the existence of a comprehensive set of environmental regulations, China’s environmental issues continue largely unabated and are increasingly leading to discontent among its citizens. Mirroring recent governance trends in China, the central government has increasingly taken a more hands-on-role to ensure the enforcement of environmental regulations by local government officials. One manifestation of this effort to re-centralize environmental institutions has been the establishment and deployment of Central Environmental Inspection Teams (CEITs). CEITs report directly to the central government and are dispatched to carry out crackdowns where the central government has reason to believe that environmental regulations are not being …


A Global Regression Method For Thermal Sharpening Of Urban Land Surface Temperatures From Modis And Landsat, James. W. Wang, Winston T. L. Chow, Yi-Chen Wang Apr 2020

A Global Regression Method For Thermal Sharpening Of Urban Land Surface Temperatures From Modis And Landsat, James. W. Wang, Winston T. L. Chow, Yi-Chen Wang

Research Collection School of Social Sciences

Land surface temperatures (LST) in urban landscapes are typically more heterogeneous than can be monitored by the spatial resolution of satellite-based thermal infrared sensors. Thermal sharpening (TS) methods permit the disaggregation of LST based on finer-grained multispectral information, but there is continued debate over which spectral indices are most appropriate for urban TS, and how they should be configured in a predictive regression framework. In this study, we evaluate the stability of various TS kernels with respect to LST at different spatial (Landsat 8) and diurnal (MODIS) scales, and present a new TS method, global regression for urban thermal sharpening …


The Uk Summer Heatwave Of 2018 And Public Concern Over Energy Security, Shaun Larcom, Po-Wen She, Terry Van Gevelt Apr 2019

The Uk Summer Heatwave Of 2018 And Public Concern Over Energy Security, Shaun Larcom, Po-Wen She, Terry Van Gevelt

Research Collection College of Integrative Studies

The UK summer heatwave of 2018 led to changes in consumer behaviour, including large increases in electricity demand due to increased use and intensity of refrigeration and air-conditioning devices1,2. Although the United Kingdom experienced its equal hottest summer on record, the extreme temperatures were concentrated in the south and east of England3. Here we exploit the regional variation to test for the effect of experiencing extreme temperatures on perceptions of resource security and on related pro-environmental behaviour. We analyse data from 2,189 individuals across the UK over a 7 day period and use a difference-in-differences estimation to compare responses of …


Do Voluntary Commons Associations Deliver Sustainable Grazing Outcomes? An Empirical Study Of England, Shaun Larcom, Terry Van Gevelt Apr 2018

Do Voluntary Commons Associations Deliver Sustainable Grazing Outcomes? An Empirical Study Of England, Shaun Larcom, Terry Van Gevelt

Research Collection College of Integrative Studies

In 1965, the Commons Registration Act came into force in England and Wales. The Act led to the removal of the capacity of commoners to regulate the intensity of grazing via traditional legal means. From this policy shock a number of voluntary commons associations were formed. These voluntary groups relied on their members to agree upon how the commons should be managed. Using two-stage least squares regression analysis we find that commons governed by these associations are much more likely to produce sustainable grazing outcomes. These results are robust to the existence of a variety of controls, including overlapping institutional …


Regulating The Water-Energy-Food Nexus: Interdependencies, Transaction Costs And Procedural Justice, Shaun Larcom, Terry Van Gevelt Jun 2017

Regulating The Water-Energy-Food Nexus: Interdependencies, Transaction Costs And Procedural Justice, Shaun Larcom, Terry Van Gevelt

Research Collection College of Integrative Studies

There have been calls for an overhaul of regulatory and governance frameworks to incorporate the implications of the water-energy-food nexus. We map one small component of the regulatory space of the nexus and highlight its immense complexity. We draw on insights from the economics and socio-legal literatures to show that a decentralised approach to regulation based upon procedural justice can enable the trade-offs of the nexus to be considered and addressed. We use a nexus case study of micro hydro-electricity generation in Dartmoor National Park in England to show that when we take into account interactions between state and non-state …


Precolonial Institutions And Deforestation In Africa, S. Larcom, Terry Van Gevelt, A. Zabala Feb 2016

Precolonial Institutions And Deforestation In Africa, S. Larcom, Terry Van Gevelt, A. Zabala

Research Collection College of Integrative Studies

We find that local institutions inherited from the precolonial era continue to play an important role in natural resource governance in Africa. Using satellite image data, we find a significant and robust relationship between deforestation and precolonial succession rules of local leaders (local chiefs). In particular, we find that those precolonial areas where local leaders were appointed by ‘social standing’ have higher rates of deforestation compared to the base case of hereditary rule and where local leaders were appointed from above (by paramount chiefs). While the transmission mechanisms behind these results are complex, we suggest that areas where local leaders …


Assessment Of Measured And Perceived Microclimates Within A Tropical Urban Forest, Winston T. L. Chow, Siti Nur ‘Assyakirin Binte Ali Akbar, Su Li Heng, Matthias Roth Jan 2016

Assessment Of Measured And Perceived Microclimates Within A Tropical Urban Forest, Winston T. L. Chow, Siti Nur ‘Assyakirin Binte Ali Akbar, Su Li Heng, Matthias Roth

Research Collection School of Social Sciences

Urban greenery is a favoured approach applied towards reducing urban warmth and climate discomfort, but ascertaining its measured and perceived effectiveness in tropical climates is relatively understudied. To this end, we investigated microclimate differences within an urban park (the Singapore Botanic Gardens) to assess if variations in plot-scale land cover affect both objective (measured) and subjective (surveyed) microclimate data. Over two monsoonal seasons, we obtained data from four distinct sites—a tropical rainforest stand, a palm tree valley, a water-body feature, and the park visitors’ centre. Measured climate data (e.g. air temperature, vapour pressure, wind velocity and globe temperatures) were used …


Seasonal Dynamics Of A Suburban Energy Balance In Phoenix, Arizona, Winston T. L. Chow, Thomas J. Volo, Enrique R. Vivoni, G. Darrel Jenerette, Benjamin L. Ruddell Mar 2014

Seasonal Dynamics Of A Suburban Energy Balance In Phoenix, Arizona, Winston T. L. Chow, Thomas J. Volo, Enrique R. Vivoni, G. Darrel Jenerette, Benjamin L. Ruddell

Research Collection School of Social Sciences

Observations of local-scale urban surface energy balance (SEB), which include fluxes of net all-wave radiation (Q*), and eddy covariance measurements of sensible (QH) and latent heat (QE) were collected in an arid Phoenix, AZ suburb from January to December 2012. We studied diurnal variations in SEB partitioning over four distinct seasons: winter, equinoxes, and summer; the latter period is further subdivided into (1) months prior to and (2) months occurring during the North American Monsoon. Largest flux densities were observed in summer, with most available energy partitioned into QH. Much less energy is partitioned into QE, but this term is …


A Historical Review And Assessment Of Urban Heat Island Research In Singapore, Matthias Roth, Winston T. L. Chow Nov 2012

A Historical Review And Assessment Of Urban Heat Island Research In Singapore, Matthias Roth, Winston T. L. Chow

Research Collection School of Social Sciences

This historical review of 20 studies since the 1960s examines the influence of urban development on the thermal environment in Singapore, a fast growing tropical island city-state. Past observations are critically assessed with regard to experimental controls and station metadata. Given the availability of historical climate and developmental data spanning almost 50 years, changes in urban heat island (UHI) intensity and spatial coverage can be traced temporally. Rapid urban expansion in Singapore is clearly reflected in spatially and temporally changing air and surface temperature patterns. The nocturnal canopy-layer UHI intensity – measured as the difference between the commercial urban core …


Urban Heat Island Research In Phoenix, Arizona, Winston T. L. Chow, Dean Brennan, Anthony J. Brazel Apr 2012

Urban Heat Island Research In Phoenix, Arizona, Winston T. L. Chow, Dean Brennan, Anthony J. Brazel

Research Collection School of Social Sciences

Over the past 60 years, metropolitan Phoenix, Arizona, has been among the fastest-growing urban areas in the United States, and this rapid urbanization has resulted in an urban heat island (UHI) of substantial size and intensity. During this time, an uncommon amount of UHI-specific research, relative to other cities in North America, occurred within its boundaries. This review investigates the possible reasons and motivations underpinning the large body of work, as well as summarizing specific themes, approaches, and theoretical contributions arising from such study. It is argued that several factors intrinsic to Phoenix were responsible for the prodigious output: strong …


Analyses Of Nocturnal Temperature Cooling-Rate Response To Historical Local-Scale Urban Land-Use/Land Cover Change, Winston T. L. Chow, Bohumil M. Svoma Sep 2011

Analyses Of Nocturnal Temperature Cooling-Rate Response To Historical Local-Scale Urban Land-Use/Land Cover Change, Winston T. L. Chow, Bohumil M. Svoma

Research Collection School of Social Sciences

Urbanization affects near-surface climates by increasing city temperatures relative to rural temperatures [i.e., the urban heat island (UHI) effect]. This effect is usually measured as the relative temperature difference between urban areas and a rural location. Use of this measure is potentially problematic, however, mainly because of unclear ‘‘rural’’ definitions across different cities. An alternative metric is proposed—surface temperature cooling/warming rates—that directly measures how variations in land-use and land cover (LULC) affect temperatures for a specific urban area. In this study, the impact of local-scale (,1 km2 ), historical LULC change was examined on near-surface nocturnal meteorological station temperatures sited …