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应用南京城市气温观测数据对一个2017年最新提出的日最大热岛强度诊断方程进行了检验,这是首次用欧洲之外的城市气温实测数据对该方程进行检验。南京气温观测实验基于城市局地气候分区(Local Climate Zone,LCZ)方法进行,该方法是一种用于城市气温研究的客观标准的局地热气候分类方法。用于本次研究的气温观测数据来源于南京城区7个不同类型的LCZ地块,从2016年7~11月期间挑选出29 d天气特征为晴朗、微风、少云的典型气象日。对比分析了各LCZ地块的日最大热岛强度观测值和基于该诊断方程的计算值,结果表明:该方程的整体精度(r~2=0.46,RMSE=1.08 K,MEAE=0.76 K)接近其在欧洲西北部14个城市的诊断表现(r~2=0.65,RMSE=0.91 K,MEAE=0.58 K),初步表明该方程可用于诊断我国城市的日最大热岛强度。
Using the Nanjing urban air temperature observation data, a new diagnostic equation of daily maximum heat island strength proposed in 2017 was tested, which is the first time that the equation was tested by the measured data of urban air temperature outside Europe. Nanjing Temperature Observations Experiments are based on the Urban Local Climate Zone (LCZ) method, an objective and standard method of local climatic classification used in urban temperature studies. The temperature data used in this study were derived from seven different types of LCZ plots in Nanjing City. From July to November 2016, 29 days of weather were selected as typical meteorological days with clear, breeze and few clouds. The results show that the overall accuracy of this equation (r ~ 2 = 0.46, RMSE = 1.08 K, MEAE = 0.76 K) is close to that of the LCZ plot The diagnostic performance (r ~ 2 = 0.65, RMSE = 0.91 K, MEAE = 0.58 K) in 14 cities in the northwestern Europe shows that this equation can be used to diagnose the daily maximum heat island intensity in our country.