Heat island effect

heat island effect

[′hēt ‚ī·lənd i‚fekt]
(meteorology)
In urban areas with tall buildings, an atmospheric condition in which heat and pollutants create a haze dome that prevents warm air from rising and being cooled at a normal rate, especially in the absence of strong winds.

Heat island effect

A phenomenon that occurs in developed areas where the replacement of natural land cover with paving, buildings, roads, and parking lots results in an increase in outdoor temperatures. The heat island effect can be mitigated by vegetation, green roofs, and light-colored materials that reflect heat. Urban heat islands can be as much as 10 degrees Fahrenheit hotter than the surrounding undeveloped areas.
References in periodicals archive ?
In recent years, the relatively sheltered, urban heat island effect in central Birmingham has also seen trees in New Street retaining some green leaves beyond New Year's Eve and into the next calendar year.
The building takes advantage of natural light and uses technological devices that reduce energy consumption by more than 44 percent; 30 percent of the first-floor surface is green space, reducing the heat island effect in the area.
Along with companion practices, EPA notes, they decrease pollution to local waterways by treating rain where it falls and keeping polluted stormwater from entering sewer systems; increase economic activity, neighborhood revitalization, job creation and open space; and, reduce local water infrastructure burden, urban heat island effect and energy consumption.
From top to bottom, additional energy reduction was achieved by constructing a highly reflective roof to minimize building heat island effect, and also by including concrete in more than 54 percent of pavement materials to minimize surface pavement heat island effect.
The newly planted roof areas will provide a number of ecological benefits to the property and neighborhood, including improved stormwater retention and reduction of the City's heat island effect.
Dan Goldberg of Chromaflo Technologies Corporation discussed the concerns over the heat island effect in large cities and the need to reduce energy consumption.
Research in HTA's Greening the UK campaign has shown that just a 10 per cent increase in tree coverage in urban areas will counter the predicted 4degC temperature over the next 100 years caused by climate change and the urban heat island effect.
For the majority of the world, the heat island effect is most pronounced on winter nights.
The energy efficient cogeneration system provided by Anaergia represents a bold investment taken by New York City's largest hotel to reduce its carbon footprint, conserve energy and reduce the urban heat island effect.
The guide describes how rooftop gardens utilizing horticultural grade perlite can reduce the heat island effect of smaller, older buildings while also treating storm water runoff, extending the life of the roofing and creating a habitat for flora and fauna.
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.
Studies also indicate cities record less precipitation than surrounding areas where the heat island effect is present.