Investigation of urban microclimate parameters in an urban center

Abstract

a b s t r a c tThe local climate of an urban area can be greatly affected by the urban thermo-physical and geometrical characteristics, anthropogenic activities and heat sources present in the area. A growing interest in microclimate issues has been raised as they represent important factors in achieving energy conservation and sustainability inside the cities, where a big amount of the population lives.This paper presents the analysis of microclimatic conditions in urban street canyons in a city of Northern Greece, Serres. A number of field measurements were carried out during summer 2011 aiming at investigation of the microclimate parameters that affect thermal conditions in the city's streets. The present study focused on the experimental investigation of wind characteristics (speed and direction) and thermal profile (air temperature distribution) of an area consisted by several building blocks in the city center.The data analysis concentrated at the differences that were observed inside the canyons, along different streets and the comparison between the microclimatic parameters in the urban center and the suburban area. Estimation of the cooling degree days for the area shows the increased energy needs of the surrounding buildings during the summer period.

Infrared Screening of Residential Buildings for Energy Audit Purposes: Results of a Field Test

“…In the study of a city of Northern Greece [20], it should be noted that, according to the meteorological data of the Hellenic National Meteorological Service and data analysis, the wind speeds inside the urban canyon in the study area are lower than in the related suburban area. Specifically, the wind speed in the pedestrians' level (1.8 m) is the 1/3-1/4 of the suburban area.…”

Microclimate Improvement of Inner-City Urban Areas in a Mediterranean Coastal City

“…Sustainability 2017, 9,882 for UB.B instead of 1:4 for UB.A, and (c) the UB.B courtyard covers a surface area correspon of the UB.A courtyards' surface area (Tables 7 and 8). Urban geometry is often expressed with the Aspect Ratio Height/Width (H/W), which refers t ratio of the mean building height to the streets' width (or generally to their mean in-betw distance) (initially introduced by Oke, 1987).…”

“…Similarly, Greek city centers are characterized by particularly high temperatures during summer. Several studies focused on the detection of UHI in the Greek cities, mainly in Athens and Thessaloniki [1][2][3][4][5], as well as in medium-sized cities such as Patras, Herakleion, and Volos [6], and even in smaller cities such as Chania [7], Agrinio [8], and Serres [9].…”

A Review of Thermal Environmental Quality in Residential Areas in Tropical Cities

“…If microclimate of residential areas increase than the intensity of UHI will increase too. The increasing of UHI related with material used [14,15], building configuration [14,16], lack of vegetation and water bodies [17]. The increasing of UHI have a correlation with the increasing of urbanization, air pollution and anthropogenic heat sources [4].…”