Abstract
A new measurement system based on open source electronics (Arduino) was designed to obtain high frequency data to study Urban Heat Island (UHI). The instrument registers geo-referenced information of air temperature, relative humidity, barometric pressure and altitude above sea level in a moving vehicle. The device was designed to analyze the UHI in Bahia Blanca city, Argentina. Measurements were made with the method of urban transects during different days of summer and winter. The spatial distribution of air temperature was associated with wind direction and speed. Relative humidity was low in the downtown area and high in the periphery and the estuarine coast. In conclusion, the device allowed to study the Urban Heat Island in the city. Its use will be useful for urban planning because the measurements are very fast and accurate.
Highlights
Urban Heat Island (UHI) is a major alteration generated by urbanization that affect the regional climate
Its intensity vary with time and space and it is influenced by regional climate, atmospheric weather, topography, size and morphology of the city, waterproofing of natural surfaces, lack of evaporative surfaces, urban air composition, among others (Klyskik & Fortuniak, 1999; Wong & Yu, 2005; Tran et al, 2006; Unger et al, 2009)
UHI has been analyzed in different cities and its intensities varies between 2 to 14 oC depending on site conditions (Camilloni & Barros, 1997; Figuerola & Mazzeo (1998), Oliveira Moreas et al, 2005; Sakata et al.. 2006; Chen et al, 2006; Alcofarado & Andrade, 2006; Kassomenos & Katsoulis, 2006; Tran et al, 2006; Kolokotsa et al, 2009; Pereira Sena, 2014)
Summary
Urban Heat Island (UHI) is a major alteration generated by urbanization that affect the regional climate. Its intensity vary with time and space and it is influenced by regional climate, atmospheric weather, topography, size and morphology of the city, waterproofing of natural surfaces, lack of evaporative surfaces, urban air composition, among others (Klyskik & Fortuniak, 1999; Wong & Yu, 2005; Tran et al, 2006; Unger et al, 2009). UHI has been analyzed in different cities and its intensities varies between 2 to 14 oC depending on site conditions (Camilloni & Barros, 1997; Figuerola & Mazzeo (1998), Oliveira Moreas et al, 2005; Sakata et al.. Kolokotsa et al, 2009) or 'Urban routes or transects', where weather stations are installed in cars that register thermo-hygrometric data. Once the information is obtained, the data is normalized using a fix station as a reference (e.g. George et al, 2007)
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