Urban Heat Island Green Roof Diagram

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.

Urban heat island green roof diagram.

Green roofs harness the same evaporative cooling effect that cities lose when they hack away vegetation. A green roof is simply a roof that includes plants and vegetation. Smart surfaces have also been shown to. Image courtesy of pps.

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 are not created equal. This process cools green roofs as the moisture from the evapotranspiration lowers the temperature of the growing medium of the roof heat. Urban heat island diagram.

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. Urban heat island global warming climate change green roof system urban park roof plan built environment urban planning sustainable living urban design. Green roofs combat the urban heat island effect through three fundamental functions. The first is evapotranspiration which is the process of using heat in the air to evaporate water in plants and soil.

The mesoscale community compressible mc2 model was. The hydrologic and thermal performance of six different extensive green roofs and reflective and non reflective roofs in a sub tropical climate. Green roofs tend to maintain an ambient temperature of 90 degrees f creating optimal conditions for air conditioning. Green roof infrastructure is a technology that allows the use of vegetation to reduce rooftop temperatures.

There are a myriad of strategies being adopted by cities across the world to reduce urban heat island uhi and adapt to climate change. 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. Green roofs repainting dark surfaces and increased tree planting can all help lower temperatures in summer months. 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.

Using green roofs in cities or other built environments with limited vegetation can moderate the heat island effect particularly during the day. The place diagram a tool to help people in judging any place good or bad. Developing a uhi strategy addressing uhi requires investment in a variety of measures including white or reflective roofs green roofs urban forests and reflective paving.