Journal of Urban and Environmental Engineering (JUEE), v.14, n.1, p.110-118, 2020 0 U E E J Journal of Urban and Environmental Engineering, v.14, n.1, p.110-118 Journal of Urban and Environmental Engineering ISSN 1982-3932 doi: 10.4090/juee.2020.v14n1. 101118 www.journal-uee.org EVALUATION OF FUTURE CLIMATE CHANGE SCENARIOS IN URBAN HEAT ISLAND AND ITS NEIGHBORHOOD USING DYNAMICAL DOWNSCALING Marcos Vinícius Bueno de Morais 1,2 , Viviana Vanesa Urbina Guerrero 2 , Anderson Paulo Rudke 2 , Thais Fujita 2 , Leila Droprinchinski Martins 2,3 and Jorge Alberto Martins 2,3 1 Departamento de Obras Civiles, Facultad de Ciencias de la Ingeniería, Universidad Católica del Maule, Chile 2 Federal Technological University, Paraná, Londrina, Brazil. 3 Visiting Researcher at Lund University, Lund, Sweden Received 03 January 2020; received in revised form 01 May 2020; accepted 03 May 2020 Abstract: According to IPCC reports, global climate change is likely to be accompanied by a greater frequency, intensity, and duration of heat waves in urban areas. This is related to predicted and ongoing variation of atmospheric temperature and its association with the dynamical evolution of cities. Changes in the roughness pattern of the surface, wind intensity, soil available humidity and radiative properties compared to the natural surfaces characterize the formation of the Urban Heat Island (UHI). A dynamical downscaling of A2 and B1 SRES’s future scenarios from Intergovernmental Panel on Climate Change were performed for Londrina, a medium-size city of Southern Brazil, using the Weather Research and Forecasting model. The main objective of this study is to investigate the impact of these scenarios on the UHI formation and intensity based on different input data, and its role and influence in the rural area. For this, an evaluation of the model and a comparison with the scenarios were done to mitigate the current trends. The results show a tendency in the current situation in following the pessimistic A2 scenario. Also, a drier rural area for the sustainable projection (B1) is found which implicates in a higher temperature and wind patterns modification for both sites, urban and rural region. Both future projections have a direct influence on the UHI intensity and formation, yielding effects in the agriculture and affecting conditions on human comfort over the region. Keywords: Climate change scenarios; regional modeling; urban heat island © 2020 Journal of Urban and Environmental Engineering (JUEE). All rights reserved.  Correspondence to: Marcos V. B. Morais, Tel.: +56 71 2 203 566 E-mail: bmarcos@ucm.cl