One of the fun elements of Google Earth is the steadily growing library of buildings that have been modelled in a simplified 3-D format (perhaps by many of the unfortunately unemployed with time on their hands). I stumbled upon the Multnomah County Green Roof (Amy Joslin Memorial Ecoroof) and thought it was pretty cool.
:: Multnomah County – images via Google Earth
There’s definitely some washed out quality of the vegetation (perhaps due to aerial photography, or perhaps just due to season) – but you can definitely read the vegetative quality, particularly when there is a pattern, such as the banding on the Portland Building Ecoroof below.
:: SoWa Condos – image via Google Earth
:: OHSU Center for Health and Healing – image via Google Earth
:: Jean Vollum Natural Capital Center – image via Google Earth