Green Roof Co2 Reduction

Green roofs can reduce stormwater runoff via water wise gardening techniques.

Green roof co2 reduction.

A study presented at the green roofs for healthy cities conference in june 2004 cited by the epa found water runoff was reduced by over 75 during rainstorms. From these results we concluded that the co2 payback time of the. In the field measurement p1 can be considered to be a site very close the green roof and p2 is the site with some distance from the green roof. The closer to the green roof region is the greater the reduction of co 2 concentration will be.

Green roofs play a significant role in retrofitting the low impact development lid practices in urban areas. For the initial searching of scopus and web of science wos the criteria used was ts green roof carbon sequestration or green roof co2 sequestration or green roof for air pollutant removal or green roof as pollution abatement or roof vegetation for carbon emission reduction or green roof environmental benefits with timespan 2000 march. In the hypothetical green roofs annual co2 reduction due to saved energy was between 1 703 and 1 889 kg co2 m yr. 1 2 in addition green roofs can reduce building energy use by 0 7 compared to conventional roofs reducing peak electricity demand and leading to an annual savings of 0 23 per square foot of the roof.

This is consistent with the field measurement. Green roof temperatures can be 30 40 f lower than those of conventional roofs and can reduce city wide ambient temperatures by up to 5 f.