Urban Heat Island effect in Guayaquil
FC-02x Livable Future Cities (1st Run) - Compulsory Exercise 2
Uploaded on 2015-10-19 by luisproano1
Q 2**. Which are the main UHI effects that you can identify in your area?** The temperature of Guayaquil is ranging from 180C in the dry season to 320C in the rainy one. Although there is scarce research about the Heat Island Effect in Guayaquil, according to a satellite image of the Municipality of Guayaquil and some particular researchers in the main avenue of the inner city, the core city (the more pigmented blue zone shown below) is the hottest zone in comparison with their surrounding areas. The increase in temperature in the inner city has been exacerbated by the high thermal mass of the built environment such as cement in walls and concrete or asphalt in streets, which added to the scarce ventilated outdoor spaces due to the scarce of green areas worsening consequently the Heat Urban Island effect. In the main avenue of the city center, 9 de Octubre, similar to the rest of the urban streets, 46.60% of the land is occupied by buildings, 29.85% by roads of pavers and asphaltic concrete and 20.67 by sidewalks of concrete or porcelain. The main consequences of the Heat Urban Island effect in Guayaquil city are displayed in: 1) the increase of environmental pollution due to difficulty in absorbing the motor vehicle- particulate materials, gas emissions and noise; 2) the diminish of the human comfort when moving through the city by waking or by using motorized transportation; 3) the increase of energy demand for cooling buildings and cars and heath deterioration in terms of morbidity and mortality cases, due to environmental pollution. **3. Which are the measures you would propose?** First of all, I would reorganize the urban space of the city by integrating the rural green areas with the new proposal of urban green system. The new green infrastructure proposal would involve rehabilitating the city so as to, among other things, increase the albedo with greener infrastructure in sidewalks, community spaces, facades and roofs. Secondly, to reduce the pavement albedo, it would be important to promote policies for pavement perseveration and rehabilitation with reflecting coating and seals, white topping; moreover, new construction pavements would be built by using non-bituminous binders (tree resins for instance), lightly color aggregates and white cements , recycling materials, fly ashes, slags. The use of permeable and vegetable pavements and will also induce to reduce the Urban Heat Island effect. Finally, I would promote policies to promote sustainable mobility, by encouraging non-motorized transportation strategies so as to diminish the automobile usage. **4. Is UHI effect concerning policy making in your area?** There is no an urban policy to promote the strategies to mitigate the UHI effects. Exist only few private initiatives to build green roofs but at a housing scale. ![Jujan, rural area belonging to the Guayas province. Photos taken by Mónica Wuth ][1] ![Guayaquil downtown, 9 de Octubre Avenue][2] [1]: https://edxuploads.s3.amazonaws.com/14452866797791173.jpg [2]: https://edxuploads.s3.amazonaws.com/1445287132627967.png