Simulation Study on the Impact of Urban Planning on a High Temperature Process in Xiongan New Area

Zhang Ming; Li Yan; Tian Ran; Li Can; Zhang Lei; Xue Manrui

doi:10.16765/j.cnki.1673-7148.2025.05.006

Abstract：Against the backdrop of global warming and accelerated urbanization,regional thermal environment is one of the important factors affecting urban ecological livability.Reasonable urban plan-ning can minimize meteorological disasters such as high temperatures and heat waves caused by regional thermal environment,and it is also one of the scientific issues that need to be solved in urban planning,construction and development.In this research,employing the WRF V4.2,we conduct comparative tests,analyze the simulated impact of urban planning on a high temperature process in Xiongan New Area on July 10,2016,and study the response of regional thermal environment to urban construction plan-ning.The research results show that:(1)Introducing high spatial-resolution land-use data to simulate the temperature in Xiongan New Area can accurately reflect the temperature changes inside the region.The absolute value of average relative error of temperatures is 1.68℃,and the stations with the absolute val-ue of average relative error≤2℃account for 76%.(2)The urban planning of Xiongan New Area mainly affects the daytime temperature.After the planning implementation,except for the slight increase of tem-perature in the starting area,Rongcheng group,and Zan'gang group,the 24 h mean temperature in most parts of the New Area is reduced by 1-2℃.(3)The urban and rural planning scheme of"one main,five auxiliary,and multiple nodes"in Xiongan New Area is good for degrading the high temperature and thermal environment in the region.The impact of high temperature in the entire region is shortened by 1-2 h,with 45.93%of the New Area showing a decrease in normalized thermal field intensity.Especial-ly,the growth in the water area of Baiyangdian Lake has effectively alleviated the urban heat island effect in Xiongan New Area.