With 11 distinct climate regions in Canada (ECC, 2015), it is important to choose plant types which are suitable for the climate region and the harsh microclimate conditions on the urban roof environment. The three Canadian cities chosen for this study, Calgary AB, London ON, and Halifax NS, are found in three different climate regions: Prairies, Great Lakes/St. Lawrence, and Atlantic Canada, respectively. This research has provided insight on how regional weather conditions influences the seasonal range of ET from extensive green roofs in that region. More importantly, this research has highlighted the importance of selecting suitable vegetation types to optimize green roof design in Canada.
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