银川不同季节典型空气污染过程特征分析  

Characteristics of Typical Air Pollution Process in Different Seasons in Yinchuan

作　　者：高娜 孙银川 王宝珍[3] 左河疆 高睿娜 GAO Na;SUN Yinchuan;WANG Baozhen;ZUO Hejiang;GAO Ruina(Ningxia Key Laboratory of Meteorological Disaster Preventing and Reducing,Key Laboratory for Meteorological Disaster Monitor-ing and Early Warning and Risk Management of Characteristic Agriculture in Arid Regions,China Meteorological Administration,Yin-chuan 750002,China;Ningxia Climate Center,Yinchuan 750002,China;Green Intelligence Environmental School,Yangtze Normal University,Chongqing 408100,China)

机构地区：[1]中国气象局旱区特色农业气象灾害监测预警与风险管理重点实验室,宁夏气象防灾减灾重点实验室,银川750002 [2]宁夏回族自治区气候中心,银川750002 [3]长江师范学院绿色智慧环境学院,重庆408100

出　　处：《三峡生态环境监测》2020年第4期1-7,共7页Ecology and Environmental Monitoring of Three Gorges

基　　金：宁夏回族自治区重点研发计划一般项目(2018BEG03066)。

摘　　要：利用银川贺兰山东路监测点2016—2018年的污染物逐时质量浓度资料,结合银川气象站气象观测资料,挑选了春、夏、秋、冬四个季节的污染个例,对银川市不同季节空气污染过程的特征进行研究。结果表明:银川市春季及秋季的污染过程为沙尘污染,冬季为霾污染,夏季为臭氧污染;除夏季仅为轻度及中度污染外,其他3个季节都出现了重度及严重污染;春季及秋季的沙尘污染过程主要污染物为PM10,冬季霾污染过程主要污染物为PM2.5;春季沙尘污染天气过程中,当PM10及PM2.5处在较高(低)浓度时,对应NO2和SO2平均浓度值较低(高),冬季霾污染过程中,NO2和SO2平均浓度值会随PM10及PM2.5浓度值上升而上升。不同季节污染过程均具有相对湿度偏小,风速偏小的特征。Based on the hourly mass concentration data of pollutants from the monitoring point of Helanshan Road East in Yinchuan from 2016 to 2018,and combined with the meteorological observation data of Yinchuan station,four pollution cases in spring,summer,autumn and winter were selected to study the characteristics of air pollution process in different seasons in Yinchuan City.The results show that:the pollution process of Yinchuan in spring and autumn was dominated by sand dust pollution,in winter by haze pollution,and in summer by ozone pollution;except for mild and moderate pollution in summer,severe and serious pollution occurred in other three seasons.In spring and autumn,the main pollution of sand dust pollution process was PM10,and the main pollution of haze pollution process in winter was PM2.5;when the concentration of PM10 and PM2.5 was higher(lower)in spring,the average concentration of NO2 and SO2 was low(high).In the process of haze pollution in winter,the average concentrations of NO2 and SO2 increased with the increase of PM10 and PM2.5 concentration.The meteorogical element of the different pollution processes are characterized by low relative humidity and wind speed.

关 键 词：银川 季节变化 污染个例 空气污染 

分 类 号：X524[环境科学与工程—环境工程]