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Do green roofs cool the air?

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Presentation on theme: "Do green roofs cool the air?"— Presentation transcript:

1 Do green roofs cool the air?
Anna Solcerova Frans van de Ven Mengyu Wang Michiel Rijsdijk Nick van de Giesen

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3 7 extensive green roofs and 2 traditional roofs (gravel and black) in Utrecht
Measured: temperature inside the green roofs temperature 15 and 30 cm above soil moisture (2 roofs) runoff weather station: rain volume, temperature, wind, and solar radiation

4 Cooling effect in relation to soil moisture
Cloudy days Clear sky days Soil moisture Ts Air temperature 15cm above roof (T15) Two green roofs (GR4 “•” and GR7 “▼”) White gravel roof as reference

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7 Dry year vs. “normal” year
Air temperature 30 cm above Air temperature 15 cm above Soil temperature (-2.5 cm)

8 Conclusions Know your aim! Know what are you measuring
Know your plants Know your aim! Avg. diff = - 0,04OC Avg. diff = + 0,03OC

9 Thank you! Questions? For more details: Solcerova Anna, et al. "Do green roofs cool the air?."  Building and Environment 111 (2017):


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