基于ENVI-met的广州街区温湿环境模拟  

Simulation Study of the Tempe rature and Humidity Envi ronment of Urban Streets and Blocks in Guangzhou Based on ENVI-met Model

作　　者：翁佳烽 梁晓媛 李婷苑 黄扬东 朱文生 WENG Jia-feng;LIANG Xiao-yuan;LI Ting-yuan;HUANG Yang-dong;ZHU Wen-sheng(Meteorological Bureau of of Zhaoqing,Zhaoqing 526060;School of Atmospheric Sciences,Sun Yet-sen University,Zhuhai 519000;Meteorological Bureau of Huadu District,Guangzhou,Guangzhou 510800;Guangdong Province Ecological and Meteorological Center,Guangzhou 510640;Meteorological Bureau of of Jieyang,Jieyang 522000;Meteorological Bureau of Shanwei,Shanwei 516600)

机构地区：[1]肇庆市气象局,广东肇庆526060 [2]中山大学大气科学学院,广东珠海519000 [3]广州市花都区气象局,广东广州510800 [4]广东省生态气象中心,广东广州510640 [5]揭阳市气象局,广东揭阳522000 [6]汕尾市气象局,广东汕尾516600

出　　处：《广东气象》2023年第4期1-5,共5页Guangdong Meteorology

基　　金：广东省重点研发计划项目(2020B1111360003);国家重点研发计划项目(2019YFC0214605);广东省气象局科研项目(GRMC2020M22);广东省气象局科技创新团队项目(GRMCTD202003)。

摘　　要：为研究华南湿热气候地区城市小区的温湿环境特征,基于微气候模式(ENVI-met)模拟广州市海珠区中山大学小区冬夏季温湿场的分布特征,并结合气象自动站连续监测资料进行检验订正,结果表明:(1)不同季节街区温湿场空间分布特征存在一定差异,白天水体和植被覆盖区为高湿和低温区;(2)ENVI-met模式能够较好预测小区微尺度温度和湿度环境,冬季温度和湿度实测值日变化幅度稍高于模拟值,夏季温度模拟值日变化幅度大于实测值;(3)冬夏季温度经过多项式函数拟合订正及冬季湿度经过指数函数和夏季湿度经过幂函数拟合订正后RMSE分别降至0.8℃以下和2.5%以下;MAPE分别降至0.26%和2.6%以下,模拟结果与实测值基本一致。研究结果表明ENVI-met可应用于城市小区规划建设。To study the environmental characteristics of air temperature and humidity in urban streets and blocks for the areas of humid and hot climate in southern China,this work uses the ENVI-met model to simulate the distribution characteristics of the winter and summer fields for the residence quarters of Sun Yet-sen University in the district of Haizhu of Guangzhou,and test and correct the results with reference to the continuously monitored data from automatic weather stations.The results are shown as follows.(1)There are some differences in the spatial distribution of the temperature and humidity fields in the blocks and streets studied between different seasons,with water bodies and vegetation-covered areas being both much moist and cool during the day.(2)For the ENVI-met model,it does a good job in predicting the fine-scale temperature and humidity environment at the residence quarters,but its modeled amplitudes of diurnal tem-perature and humidity variations are slightly lower than the observed for winter and its outputs for diurnal temperature variations are higher than the observed for summer.(3)With polynomial function fitting and correction for wintertime and summertime temperature,the RMSE drops to less than 0.8℃,and with index function fitting and correction for wintertime humidity and power function fitting and correction for summer-time humidity,the RMSE decreases to less than 2.5%,and the MAPE reduces to 0.26% and 2.6% re-spectively,showing generally consistent results between the simulation and observation.As suggested in the study,the ENVI-met model can be applied in the planning and construction of urban residence quarters.

关 键 词：微气候 数值模拟 温湿 冬夏季 广州街区 

分 类 号：P46[天文地球—大气科学及气象学]