Temporal changes of the temperature and precipitation values in Afyonkarahisar urban area

Abstract

Urban Climate appeared in urban area where urban buildings are built, residences rise, large asphalt roads are made and asphalt roads are placed instead of soil ground. The color and patterns of roof covers affected albedo, exhaust emission, fossil fuel use and growing industrial activities changed atmospheric components in cities. After the year 2000, urban area in Afyonkarahisar grew sharply. Meteorological differences appeared in particularly between urban center and campus of new settlements area. The distance between urban center and campus is approximately 8 km. The data of two meteorological stations have been analysed between city center and peripheric. Also, meteorological differences have been evaluated by making comparisons. There is 9 km. distance between these two meteorological stations. And also there are important differences between these two stations in terms of meteorological parameters such as temperature and precipitation. Annual mean temperature of downtown is higher than that of university region in September, October, November and December except for July and August in 2015. Annual average temperature values of 2016, 2017 and 2018 are higher in downtown than that of university region. However, temperature values of 2018 are clearly similar in these two meteorological stations due to over construction in university region since 2017. Because of the urban heat island effect and intense particle in the air, the ratio of precipitation, particularly convectional precipitation increased clearly in downtown. The precipitation value in downtown in May, June, July and August are higher than that of university region in the same period. There are differences of 7-8 mm in terms of precipitation value between downtown and university region. While annual total precipitation value of 2016 is 355.6 mm in downtown, this value is 297.8 mm in university region. Annual total precipitation value of 2017 in downtown is 286.4 mm. This value is 182.3 mm in university region. In this study, meteorological differences of the stations which are in short distance in rural and urban area in Afyonkarahisar, have been produced by using Mann-Kendall and Pearson statistical methods.