Analysis of the cooling effects of higher albedo surfaces during heat waves coupling the Weather Research and Forecasting model with building energy models

Jandaghian, Zahra; Berardi, Umberto

doi:10.1016/j.enbuild.2019.109627

Cited by 62 publications

(35 citation statements)

References 53 publications

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“…The same conclusions are also found in [6,91]. Some studies also compared the daytime and nighttime effects of such mitigation strategies and reported that increasing albedo is most effective during daytime as its cooling mechanism occurs via the reflection of sunlight [84,96,98,111]. At nighttime, altering albedo no longer plays an important role in the surface energy balance due to the absence of incoming solar radiation [91].…”

Section: Increasing Albedosupporting

confidence: 53%

“…It treats several layers within the urban canopy and simulates the heat, momentum and turbulent kinetic energy exchange across multiple atmospheric levels [37,71,78,81,82]. In WRF simulations, BEP is usually coupled with the Building Energy Model (BEM) [83] to improve the calculation of energy exchange between building interiors and the outdoor atmosphere [78,84]. The BEM, for each floor, considers the conductive/sensible heat transport through walls, roofs and floors; radiation exchange through windows; longwave radiation exchange between indoor surfaces; production of heat due to occupants and equipment; and air conditioning, ventilation and heating [72,85,86].…”

Section: Numerical Modelingmentioning

confidence: 99%

“…Materials with higher albedo usually have a lighter color compared with ordinary materials. They can reflect more of the incoming solar radiation in urban areas and thus reduce the net radiation Q * [84,91,96,105]. Ultimately, the sensible heat flux Q H , which heats up the urban atmosphere, is reduced, and the urban ambient temperature is potentially lower.…”

Section: Increasing Albedomentioning

confidence: 99%

See 2 more Smart Citations

Urban Heat Island and Its Interaction with Heatwaves: A Review of Studies on Mesoscale

et al. 2021

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With rapid urbanization, population growth and anthropogenic activities, an increasing number of major cities across the globe are facing severe urban heat islands (UHI). UHI can cause complex impacts on the urban environment and human health, and it may bring more severe effects under heatwave (HW) conditions. In this paper, a holistic review is conducted to articulate the findings of the synergies between UHI and HW and corresponding mitigation measures proposed by the research community. It is worth pointing out that most studies show that urban areas are more vulnerable than rural areas during HWs, but the opposite is also observed in some studies. Changes in urban energy budget and major drivers are discussed and compared to explain such discrepancies. Recent studies also indicate that increasing albedo, vegetation fraction and irrigation can lower the urban temperature during HWs. Research gaps in this topic necessitate more studies concerning vulnerable cities in developing countries. Moreover, multidisciplinary studies considering factors such as UHI, HW, human comfort, pollution dispersion and the efficacy of mitigation measures should be conducted to provide more accurate and explicit guidance to urban planners and policymakers.

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Section: Increasing Albedosupporting

confidence: 53%

Section: Numerical Modelingmentioning

confidence: 99%

Section: Increasing Albedomentioning

confidence: 99%

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Urban Heat Island and Its Interaction with Heatwaves: A Review of Studies on Mesoscale

et al. 2021

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“…Other applications of green infrastructure such as urban vegetation strategies like tree and shrub plantings in urban corridors have also been shown to be effective in the reduction of temperatures (Nowak et al 2006;Hall et al 2012;Weber et al 2014;Anderson 2018). Green roofs and urban vegetation can also function as an effective urban heat island mitigation strategy through their cooling effect on the urban microclimate (Wang et al 2015;Berardi 2016;Jandaghian and Berardi 2019).…”

Section: Literature Reviewmentioning

confidence: 99%

Nature-based cooling potential: a multi-type green infrastructure evaluation in Toronto, Ontario, Canada

Anderson

Gough

2021

Int J Biometeorol

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The application of green infrastructure presents an opportunity to mitigate rising temperatures using a multi-faceted ecosystems-based approach. A controlled field study in Toronto, Ontario, Canada, evaluates the impact of nature-based solutions on near surface air temperature regulation focusing on different applications of green infrastructure. A field campaign was undertaken over the course of two summers to measure the impact of green roofs, green walls, urban vegetation and forestry systems, and urban agriculture systems on near surface air temperature. This study demonstrates that multiple types of green infrastructure applications are beneficial in regulating near surface air temperature and are not limited to specific treatments. Widespread usage of green infrastructure could be a viable strategy to cool cities and improve urban climate.

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“…Surface albedo, which is the ratio of outgoing to incoming irradiance at a given wavelength, is a key component to a range of scientific applications, such as the lower boundary conditions for the remote sensing of surface and atmospheric properties [1], climate studies [2], and atmospheric modeling parameters [3]. Changes in surface albedo over cropland occur at weekly, and seasonal scales due to crop growth.…”

Section: Introductionmentioning

confidence: 99%

Albedo Impacts of Changing Agricultural Practices in the United States through Space-Borne Analysis

Starr

Zhang

Reid³

et al. 2020

Remote Sensing

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Using the collocated Moderate Resolution Imaging Spectroradiometer (MODIS)-derived Bidirectional Reflectance Distribution Function (BRDF) with the U.S. Department of Agriculture’s National Agricultural Statistics Service’s Cropland Data Layer (CDL), the daily albedo of homogenous agricultural fields was derived for 51 common United States field crops by wavelength, sky-type, day of year, crop, and hardiness zone from 2015–2018. This study suggests that crop growth can result in changes in reflectivity up to a factor of 2 at most wavelengths and is unique per crop type in timing and range. Additionally, broadband impacts were studied and found to be less conspicuous than the individual wavelengths, but still significant. The results were used to evaluate a common method of cropland albedo estimation, normalized difference vegetation index (NDVI) as a proxy for albedo, and this method was found to have some significant limitations dependent on wavelength and date. Finally, a database of surface albedo variations as a function of growing period is constructed for common field crops to the United States (as well as additional land-cover types). This database can be used to aid both satellite remote-sensing applications and long-term weather modeling efforts by providing a method for parameter adjustments based on crop driven albedo changes, including changes in cropland composition related to commodity markets and other external factors.

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Analysis of the cooling effects of higher albedo surfaces during heat waves coupling the Weather Research and Forecasting model with building energy models

Cited by 62 publications

References 53 publications

Urban Heat Island and Its Interaction with Heatwaves: A Review of Studies on Mesoscale

Urban Heat Island and Its Interaction with Heatwaves: A Review of Studies on Mesoscale

Nature-based cooling potential: a multi-type green infrastructure evaluation in Toronto, Ontario, Canada

Albedo Impacts of Changing Agricultural Practices in the United States through Space-Borne Analysis

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