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安阳PM10污染物统计特征及其与气象要素的关系

             

摘要

利用2003—2014年安阳市环境保护局环境监测站PM10、SO2、NO2逐日质量浓度监测数据及同期中国气象科学数据共享服务网提供的安阳市常规气象观测数据,采用Pearson相关系数法,对安阳市PM10污染物浓度统计特征及其与同期气象要素的关系进行了研究分析。结果表明:安阳市的首要污染物为PM10,代表工业区的铁佛寺污染物浓度最大;PM10浓度具有明显的年际、月、季等变化特征,2012年之前总体呈下降趋势,2013—2014年又有所增加,冬季平均浓度最大,其次为秋季,夏季最小;总体上,空气质量以良为主,PM10夜间浓度高于白天,全天平均质量浓度最低时段是在下午;另外,PM10四季质量浓度与同期气象要素有一定的相关性,尤其是月相关系数较高,与能见度、气温、降水量呈负相关,与气压存在正相关关系。%The statistical characteristics of PM10 pollutant concentrations and the relationship between it and the meteorological elements of the same periods in Anyang were carried out by using the air and environmental monitoring data of PM10,SO2,NO2 from the environmental protection agency and meteorological data provided by China meteorological data sharing service system in the periods of 2003-2014,with the method of Pearson correlation coefficient analysis. The results show that the primary pollutant was PM10,and the PM10 pollutant concentrations of Tiefosi which represented industrial area were the biggest. Also,PM10 concentrations had apparent inter-annual,monthly and seasonal characteristics, going down from 2003 to 2012,and increasing from 2013 to 2014. The concentrations in winter were the largest, followed by autumn,summer were minimal. Totally,the air quality was primarily good,with concentrations at night larger than during the day. And the period of the lowest average mass concentrations throughout the day was in the afternoon. In addition,PM10 concentrations of the four seasons had a certain relevance with the meteorological elements in the same period,especially the monthly correlation coefficient. They had a negative correlation with visibility , temperature and precipitation,and positive relationship with the air pressure.

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