Micrometeorological simulations to predict the impacts of heat mitigation strategies on pedestrian thermal comfort in a Los Angeles neighborhood
Bibliographic Data
| ID | 15544747 |
|---|---|
| Authors | Mohammad Taleghani (0000-0002-1342-4932, University of Southern California, corresponding author), David J Sailor (0000-0003-1720-8214, Portland State University), David Sailor, George Ban‐Weiss (0000-0001-8211-2628, University of Southern California) |
| Year | 2016 |
| Volume | 11 |
| Issue | 2 |
| Pages | 024003-024003 |
| Publication date | 2016-02-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Environmental Research Letters (JOURNAL) |
| Journal identifiers | ISSN: 1748-9326 • E-ISSN: 1748-9326 |
| Publisher | IOP Publishing (PUBLISHER • GB) |
| DOI | 10.1088/1748-9326/11/2/024003 |
| OpenAlex | W2274099244 |
| Language | EN |
| Citations received | 37 |
| References cited | 3 |
The urban heat island impacts the thermal comfort of pedestrians in cities. In this paper, the effects of four heat mitigation strategies on micrometeorology and the thermal comfort of pedestrians were simulated for a neighborhood in eastern Los Angeles County. The strategies investigated include solar reflective ‘cool roofs’, vegetative ‘green roofs’, solar reflective ‘cool pavements’, and increased streetlevel trees. Aseries of micrometeorological simulations for an extreme heat day were carried out assuming widespread adoption of each mitigation strategy. Comparing each simulation to the control simulation assuming current land cover for the neighborhood showed that additional street-trees and cool pavements reduced 1.5mair temperature, while cool and green roofs mostly provided cooling at heights above pedestrian level. However, cool pavements increased reflected sunlight from the ground to pedestrians at a set of unshaded receptor locations. This reflected radiation intensified the mean radiant temperature and consequently increased physiological equivalent temperature (PET) by 2.2 °Cduring the day, reducing the thermal comfort of pedestrians. At another set of receptor locations that were on average 5mfrom roadways and underneath preexisting tree cover, cool pavements caused significant reductions in surface air temperatures and small changes in mean radiant temperature during the day, leading to decreases in PET of 1.1 °C, and consequent improvements in thermal comfort. For improving thermal comfort of pedestrians during the afternoon in unshaded locations, adding street trees was found to be the most effective strategy. However, afternoon thermal comfort improvements in already shaded locations adjacent to streets were most significant for cool pavements. Green and cool roofs showed the lowest impact on the thermal comfort of pedestrians since they modify the energy balance at roof level, above the height of pedestrians
Atmospheric sciences · Civil engineering · Climate change · Geography · Land cover · Land use · Mean radiant temperature · Meteorology · Operative temperature · Pedestrian · Thermal · Thermal comfort · Transport engineering · Urban heat island · Building Energy and Comfort Optimization · Engineering · Environmental Science · Urban Green Space and Health · Urban Heat Island Mitigation · Geology
Evaluating the cooling effects of green infrastructure
Reducing the health effects of hot weather and heat extremes
A review of mitigating strategies to improve the thermal environment and thermal comfort in urban outdoor spaces
Cooling hot cities
Maximizing the pedestrian radiative cooling benefit per street tree
More than a canopy cover metric
Numerical modeling validation for the microclimate thermal condition of semi-closed courtyard spaces between buildings
Modeling the performance of cool pavements and the effect of their aging on outdoor surface and air temperatures
Impacts of high-albedo urban surfaces on outdoor thermal environment across morphological contexts
Systematic review on cooling benefits of landscape strategies for urban thermal environments in the United States
Prediction of next-day 1-km canopy urban heat island by integrating a multi-block convolutional neural network with satellite- and ground-based observations
The predicted effectiveness of thermal condition mitigation strategies for a climate-resilient archaeological park
Analyzing the Envi-met microclimate model’s performance and assessing cool materials and urban vegetation applications–A review
Assessment of “lift-up” design’s impact on thermal perceptions in the transition process from indoor to outdoor
Study on importance, procedure, and scope of outdoor thermal comfort –A review
Feasibility of afforestation as an equitable nature-based solution in urban areas
Deciphering Urban Heat Island Mitigation
Toward healthy neighborhood thermal environments
Relating microclimate, human thermal comfort and health during heat waves
Quantitative assessment of green coverage changes under the human-biometeorological perspective
Impact of evolving building morphology on microclimate in a hot arid climate
Scaled outdoor experiments to assess impacts of tree evapotranspiration and shading on microclimates and energy fluxes in 2D street canyons
A Comparative Study of Vegetation Strategies for Outdoor Thermal Comfort in High- and Low-Density Urban Areas
Measuring the effectiveness of San Francisco’s planning standard for pedestrian wind comfort
Sustainable active transportation infrastructure for urban heat adaptation and mitigation
Not even past
Urban albedo interventions reshape thermal comfort
Pedestrian Mobility Behaviors of Older People in the Face of Heat Waves in Madrid City
Modeling the Effects of Urban Design on Emergency Medical Response Calls during Extreme Heat Events in Toronto, Canada
Evaluating the effects of different tree species on enhancing outdoor thermal comfort in a post-industrial landscape
Solar reflective pavements—A policy panacea to heat mitigation
Investigating the climate impacts of urbanization and the potential for cool roofs to counter future climate change in Southern California
Greater aridity increases the magnitude of urban nighttime vegetation-derived air cooling
Measuring the impacts of a real-world neighborhood-scale cool pavement deployment on albedo and temperatures in Los Angeles
For the mitigation of urban heat island and urban noise island
Efficacy of cool roofs at reducing pedestrian-level air temperature during projected 21st century heatwaves in Atlanta, Detroit, and Phoenix (USA)
A decision support tool for climate-informed and socioeconomic urban design
| Unique citing works | 37 |
|---|---|
| Citations per year | 3,7 |
| Citation span | 2016 - 2026 (11) |
| Citation velocity | current |
| Highly cited | No |
| Citation types | Neutral: 37 |