Urban Heat Island Green Roof Diagram

The hydrologic and thermal performance of six different extensive green roofs and reflective and non reflective roofs in a sub tropical climate.

Urban heat island green roof diagram. A green roof is simply a roof that includes plants and vegetation. Urban heat island diagram. There are a myriad of strategies being adopted by cities across the world to reduce urban heat island uhi and adapt to climate change. The purpose of this study was to assess the degree to which green roof infrastructure could reduce the urban heat island in the city of toronto.

A green roof or rooftop garden is a vegetative layer grown on a rooftop. Image courtesy of pps. The mesoscale community compressible mc2 model was. Green roofs harness the same evaporative cooling effect that cities lose when they hack away vegetation.

Smart surfaces have also been shown to. Using green roofs in cities or other built environments with limited vegetation can moderate the heat island effect particularly during the day. Urban heat island global warming climate change green roof system urban park roof plan built environment urban planning sustainable living urban design. This process cools green roofs as the moisture from the evapotranspiration lowers the temperature of the growing medium of the roof heat.

Green roofs tend to maintain an ambient temperature of 90 degrees f creating optimal conditions for air conditioning. Green roofs are not created equal. The place diagram a tool to help people in judging any place good or bad. Green roofs combat the urban heat island effect through three fundamental functions.

Green roofs and walls increasing green space and canopy cover urban farms storing stormwater and increasing groundwater percolation and expansion of highly reflective pavements are just some of the. So a green roof not only prevents the building s roof from absorbing heat but cools the air around it offsetting the urban heat island effect to an extent. In the heat island effect diagram urban parks ponds and residential areas are cooler than downtown areas. Green roofs urban planni ng pervious pavements s hade trees and existence of water bodies in city areas are the potentia l uhi mitigation strategies on which d iscussion is done in this p aper.

Green roofs provide shade remove heat from the air and reduce temperatures of the roof surface and surrounding air. Besides greenhouse gas reduction strategies to reduce global warming cities are also taking steps to reduce the heat island effect which makes urban areas more vulnerable to heat waves. The first is evapotranspiration which is the process of using heat in the air to evaporate water in plants and soil.