银川市大气逆温对环境空气污染浓度的影响  

The Impact of Yinchuan City Atmospheric Inversion Characteristics of Air Pollutant Concentrations

作　　者：范彦芳 李栋梁[1] 黄峰[2] 程雅茹 单新兰[3] 蒋婷[2] 

机构地区：[1]南京信息工程大学气象灾害教育部重点实验室/气候与环境变化国际合作联合实验室/气象灾害预报预警与评估协同创新中心,南京210044 [2]宁夏气象服务中心,银川750002 [3]宁夏气象信息中心,银川750002

出　　处：《科学技术与工程》2017年第25期339-345,共7页Science Technology and Engineering

摘　　要：通过对银川市2013~2015年逐日探空观测资料及同期银川市六个监测站点的污染物浓度逐时监测数据,对银川市低空温度层的特征进行了分析,并结合统计数据,分析了逆温层的特征及其与四种主要空气污染物(SO_2、NO_2、PM_(10)、PM_(2.5))浓度之间的关系。结果表明,银川市主城区在全年各季中均有逆温层存在,冬半年逆温发生的频率高于夏半年;逆温层厚度冬季较厚、夏季较薄,逆温强度冬季最强、夏季最弱。通过污染物浓度与逆温特性的相关分析,发现四种主要空气污染物的浓度与逆温层存在相关性,其中,空气污染物的浓度与逆温层厚度呈正相关,与逆温层强度呈正相关。这说明银川市低空大气逆温层结状况是影响当地空气污染程度的主要因素之一。The daily sounding data and the concentration monitoring data of air pollutants form 2013 to 2015 had been used for analyzing the characteristics of temperature stratification in the low level in Yinchuan. And then,the relationship between the characteristics of temperature stratification and the concentration of major air pollutants（ SO2、NO2、PM10、PM2. 5） had been also analyzed. The results showed that the inversion temperature layer always exists in the whole year; the occurrence frequency of the inversion temperature layer in winter is higher than that in summer,the thickness of the inversion temperature layer in winter is deeper than that in summer,and the intensity of the inversion temperature layer in in winter is stronger than that in summer. The concentration of major air pollutants had a positive correlation with the frequency,the thickness and the intensity of the inversion temperature layer. Therefore,the inversion temperature layer is one of the important influence factor for the concentration of air pollutants in Yinchuan.

关 键 词：逆温特性 空气污染物 相关分析 银川市 

分 类 号：X16[环境科学与工程—环境科学]