摘要
基于2014—2016年逐小时安阳、郑州和南阳市空气质量六要素质量浓度及常规地面气象资料,分析了空气质量总体特征及气象要素对主要污染物浓度的影响,结果表明:2014—2016年,河南省空气质量南部好于中、北部,主要表现为南阳的优良天数最多,安阳、郑州的较少.2014—2016年河南省空气质量逐年提高,安阳、郑州和南阳市平均优良天数分别为153、165、178 d,呈逐步增多趋势.河南省夏季污染类型正由煤烟型向油烟型转变,冬季仍以煤烟型为主.夏季空气污染物中PM_(2.5)、PM_(10)污染水平逐年下降,O_38 h污染水平急剧上升,而冬季主要以PM_(2.5)和PM_(10)为主.O_3与气温和风速呈正相关,与气压、降水量和相对湿度呈负相关,相关系数最高的为气温,最低为风速.而PM_(2.5)和PM_(10)与气象要素的相关性与O_3相反.3个城市O_3重污染条件下基本都是以SE风向为主,而PM_(2.5)和PM_(10)重污染条件下多以偏N风和E风向为主.
Based on the six elements mass concentration and conventional ground meteorological data in Anyang,Zhengzhou and Nanyang city from 2014 to 2016,the influence of air quality and meteorological factors on the concentration of major pollutants was analyzed.The results showed that in the period from 2014 to 2016,the air quality in the south of Henan was better than that in the middle and the north.The number of excellent days was the most in Nanyang,and the less in Anyang and Zhengzhou.In recent three years,the air quality in Henan had increased year by year.The average number of excellent days of the three cities in the three years was 153 days,165 days and 178 days which was showed a gradual increase trend.The summer pollution type in Henan province was changed from coal smoke to oil smoke type,and coal smoke type was dominant in winter.In summer,the pollution level of PM2.5 and PM10 was decreased year by year,and the pollution level of eight hours O3 was increased sharply,while PM2.5 and PM10 were the main pollutions in winter.O3 was positively correlated with the temperature and wind speed,and negatively correlated with the air pressure,precipitation and relative humidity.The highest correlation coefficient was the temperature,and the lowest was the wind speed.The correlation of PM2.5 and PM10 with meteorological elements were opposite to O3.In the three cities,under the condition of O3 heavy pollution,the three cities were mainly SE wind directions,while under the heavy pollution of PM2.5 and PM10,the three cities were partial N and E wind directions.
作者
任珊珊
田宏伟
REN Shanshan;TIAN Hongwei(Zhengzhou Environmental Monitoring Center,Zhengzhou 450007,China;Henan Meteorological Science Research Institute,Zhengzhou 450003,China)
出处
《河南科学》
2018年第7期1092-1098,共7页
Henan Science
基金
中央引导地方科技发展项目(HN2016-149)
河南省气象局科研计划项目(KQ201735)共同资助
关键词
空气质量
臭氧八小时
气象要素
air quality
ozone eight hours
meteorological elements
