Nowadays solutions of green roofs appeal as a smart way of adding green infrastructure to a crowded city since they can be included on new buildings or onto existing buildings, and require little space at ground level. Benefits of a green roof are multiple such as: i) stormwater retention to reduce peak flow and runoff; ii) water quality enhancement for water utilization; iii) to improve the environmental and reduce energy cost; iv) air cleaning for easy comfort into crowded urban areas; v) noise level reduction; vi) ecological benefits by enhancing the aesthetic of an area; vii) social and economic benefits. We design and build a laboratory scale model of a modular green roof. The main layers of each modulus are water proofing membrane, root barrier membrane, drainage layer, filter layer, vegetation. Modulus 1 has a regular growth medium; modulus 2 has a grown medium with superabsorbent polymer and modulus 3 with volcanic ash. The model will be online monitored via a series of smart sensors like soil humidity and temperature, radiation level (infrared, visible and ultraviolet), air humidity and temperature. The soil and stormwater is characterized by pH, electric conductivity, turbidity, 1H NMR relaxometry and diffusometry.

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