Heat Island

(redirected from Urban heat island)
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Any solid block of material—asphalt, brick, concrete—that can absorb thermal energy and release it, increasing heat stress on passers-by
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Aerial pictures of Habitations Jeanne-Mance (public housing), in Montreal, Quebec, Canada, 2008 (left) and after several Urban Heat Island (UHI) interventions, 2013 (right)
Urban heat island (UHI) is one of the most well- known phenomena that narrates that the air temperature in urban areas is normally measured higher than surrounding non-urban areas.
Many of the world cities are highly vulnerable to urban climate change and urban heat island (UHI) effect.
Intensity of urban heat island is a difference of high temperature between in the urban areas compared to rural areas.
As urban populations continue to grow, an thropogenic heat flux will also increase; without adaptation it will intensify the urban heat island effects.
A study in Philadelphia used GIS and thermal imaging to investigate the relationship between the spatial distributions of vulnerable populations, urban heat island intensities, and heat-related deaths (Johnson and Wilson 2009).
The plants will also regulate the temperature of the building and will help to balance out the urban heat island effect that is created in built up towns and cities.
The determination of the radiative and thermal properties of construction materials such as painted metal cladding and roofing is becoming more important as global awareness increases about the part that radiative properties play in helping reduce urban heat island effects and offset the use of CO2 generating cooling and heating systems.
Materials have been selected to reduce the Urban Heat Island effect, through the use of materials with high Solar Reflective Index (SRI).
It includes a discussion of the local climate at different spatial scales, focussing on balancing the energy output from a system with the energy stored within the system, and the resulting urban heat island and urban air-flows.
Analyzing temperature data from 15 sources, in some cases going as far back as 1800, the Berkeley Earth study directly addressed scientific concerns raised by skeptics, including the urban heat island effect, poor station quality, and the risk of data selection bias.
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