Climate and urban heat island: example of Mersin and Silifke

Kamile Yasdıman, B. Gönençgil, A. Tokgözlü
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Abstract

In today’s big cities, it is observed that due to the decrease of green areas due to anthropological interventions, asphalt surfaces and building areas increase, meteorological parameters are changed. Thus, in many metropolises, cities have distinctive climatic characteristics and they cause local and regional climate changes. This climate differentiation between urban areas and rural areas with geographical similarity is called Urban Heat Island. As a result, changes in urban climate and new microclimatic properties and air pollution play a negative role on the health and comfort of people. The aim of this study is to show that the factors such as industrialization, population growth and migration in Mersin have created an urban heat island in the city. In this study, the city center population was selected as Silifke, which is the rural station to be compared in terms of urban heat island with Mersin, which has more than 500.000 inhabitants. The criteria of extreme elevation difference between the two measuring stations which do not affect the climatic parameters, such as the absence of a geographic shape such as lake or high peak were taken into consideration. The annual and seasonal trend analyzes of the 65-year temperature datasets of the General Directorate of Meteorology between 1951 and 2016 were carried out and Sen’s Trend Education method was used to reveal the temperature differences. When the trends are analyzed on an annual basis, Mersin is 4,1 °C warmer than the comparative station Silifke at the minimum temperatures shown by the urban heat island.
气候与城市热岛:以梅尔辛和西里夫克为例
在今天的大城市中,可以观察到,由于人类干预导致绿地减少,沥青表面和建筑面积增加,气象参数发生了变化。因此,在许多大都市中,城市具有独特的气候特征,并引起局部和区域气候变化。这种地理上相似的城乡气候差异被称为城市热岛。因此,城市气候和新的小气候特征的变化以及空气污染对人们的健康和舒适产生了负面影响。本研究的目的是表明梅尔辛的工业化、人口增长和移民等因素在城市中形成了城市热岛。在本研究中,城市中心人口选择Silifke,这是要与Mersin进行城市热岛比较的农村站,Mersin人口超过50万。考虑了两个测量站之间的极端高差不影响气候参数的判据,如没有湖泊或高峰等地理形状。对1951—2016年气象局65年气温资料进行年际和季节趋势分析,采用Sen趋势教育方法揭示气温差异。当以年为基础分析趋势时,在城市热岛显示的最低温度下,Mersin比比较站Silifke高4.1°C。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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