Abstract
Abstract. In this study, it is aimed to understand the relation between micro-climate and urban planning in the case of a cold-climate city, Erzurum. The effects of different urban patterns on micro-climate are analyzed in the context of this study. As a methodology, ENVI-met is used for processing micro-climate simulation of selected urban areas by using measured and obtained climate data such as air temperature, relative humidity, average reflected temperature, surface temperatures, sky view factor, wind velocity and direction. In order to check the accuracy of the simulation for the case study area, obtained data (from meteorology station) is simulated with ENVI-met and results were compared with measured data in the area. Also, land uses and field searches based on the observation of existing situation of urban environment were included into analysis. The findings show that irregular building plot sizes and building heights are mostly existing in historical areas and those urban forms increase thermal comfort under cold climate conditions. The results of simulations provided that same heights of the buildings, regular separation of buildings and regular plot sizes have led to severe urban micro-climates. In contrast, it is observed that variety of those urban physical environment features supported comfortable micro-climate conditions. Urban geometry and climate variables are two of the most important factors shaping outdoor spaces thermal comfort feeling.
Highlights
The geographical location and local climate of cities determine the characteristics of urban climate in addition to human activity and built environment
When the simulations are analyzed, it is observed that street orientations have caused different urban microclimate
The results of simulations provided that while same heights of the buildings, regular separation of buildings and regular plot sizes have led to severe urban micro-climates, variety of those urban physical environment features have supported comfortable micro-climate conditions
Summary
The geographical location and local climate of cities determine the characteristics of urban climate in addition to human activity and built environment. Most of them are focused on individual design parameters such as street orientation, street widths, aspect ratios, building and pavement materials and vegetation Those issues are separately taken into consideration in each study, but a different method based on the comparative assessment is needed for climate related studies due to the complexity of determinants on urban climate. Relevant meteorological indicators such as temperature, direction and speed of wind, evaporation, humidity and sunshine duration are affected by many different kinds of design parameters such as sealed surfaces, green areas, height of the buildings, street orientations, materials on building surfaces and width of the streets. It provides a chance to evaluate the expected effects of different design solutions in terms of pedestrian comfort
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