Latent Heat Flux (Evapotranspiration) in Summer Season on Rooftop Greening Soil with Bamboo Charcoal Sublayer at a Building in West Japan

Table 2

Net radiation rate () and the ratio (%) of ground heat (), latent heat (), and sensible heat () to and evapotranspiration rate estimated by Bowen ratio over the summer season (July–September) under no irrigation on a rooftop garden of a thin and light greening substrate with bamboo charcoal sublayer.

	Net radiation () (kW/m^2/month)	Ratio to net radiation (daytime) () (%)	Latent heat () (%)	Sensible heat (%)	mm/day	mm/month
June	156	0.43	0.24	0.32	0.92	28.66
July	186	0.20	0.39	0.41	1.70	52.85
August	128	0.01	0.45	0.53	1.38	42.69
September	79	-0.04	0.38	0.66	0.73	21.98
Mean or total		0.15	0.37	0.48	1.185	146.18 (4 months)