Rooftop greenery on commercial streets refers to the practice of planting vegetation on the roofs of buildings located in commercial areas. This is done for various reasons such as improving air quality, reducing urban heat island effect, and enhancing the aesthetic appeal of the city. A 'rooftop greenery map' would be a visual representation of such areas, showing where green roofs are located and the types of plants used. This concept is part of sustainable urban design and green infrastructure initiatives.