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缪明榕,周红根,王 辉,等. 南通酸雨变化特征及影响因素分析[J]. 科学技术与工程, 2020, 20(1): 388-396.
MIAO Ming-rong,ZHOU Hong-gen,WANG Hui,et al.Variation Characteristics and the Impact Factors ofAcid Rain in Nantong[J].Science Technology and Engineering,2020,20(1):388-396.
南通酸雨变化特征及影响因素分析
Variation Characteristics and the Impact Factors ofAcid Rain in Nantong
投稿时间:2019-05-11  修订日期:2019-09-25
DOI:
中文关键词:  酸雨 pH值 大气污染物 酸雨频率 气象因子
英文关键词:acid  rain pH  value atmospheric  pollutants acid  rain frequency  meteorological factors
基金项目:江苏省气象局科研基金(No.KM201808), 南通市科技计划项目(No.JCZ18014)和南通市气象局气象科技项目(No.NQK201804)资助
                 
作者单位
缪明榕 南通市气象局
周红根 江苏省气象探测中心
王 辉 启东市气象局
鲍磊磊 南通市气象局
王剑林 如皋市气象局
汤建国 南通市气象局
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中文摘要:
      利用2007年4月~2018年10月南通地区3个酸雨观测站的观测资料,分析南通地区年、季、月变化特征及12年平均酸雨变化规律,利用酸雨观测的长期资料进一步统计分析酸雨发生与气象因子的关系,并结合南通环境监测站监测的大气污染物排放数据形成进行初步归因探讨分析。结果表明:南通地区吕四、南通、如皋酸雨观测站都有酸雨出现,出现的频率都在50%以上。吕四站的(强)酸雨概率大于其他2个站;pH值也是最低的。由年平均降水pH值及(强)酸雨频率分析显示,2008年前后3个站酸雨达到最强,2014年之后,降水的酸性程度在减小,酸雨率在降低。夏季和秋季降水受污染程度较冬季和春季轻,吕四站冬季降水甚至达到强酸雨污染程度。南通地区3个站pH值都是随着降水等级的增加,呈现先下降后上升的波动趋势。3个站的电导率均是随日降水量的增加而明显降低,可以看出降水量的大小会影响降水的电导率。从主导风向对比降水pH值、酸雨频率,吕四站酸雨污染程度高于南通站和如皋站;吕四站和南通站出现酸雨概率最多的为东南风,如皋站出现酸雨的频率最多的为东北偏东风。分析2017年全年南通站降水当日的降水pH值跟当日SO2、NO2、PM10和PM2.5均呈较明显的负相关关系,说明降水当天大气污染越严重,降水酸度越强。由南通地区酸雨的变化趋势,也能说明跟近年SO2、NO2等大气污染物排放量明显在减少。
英文摘要:
      Using the observation data of the three acid rain observation stations in Nantong area from April 2007 to October 2018, the change characteristics of the year, quarter, and month in Nantong area and the change laws of acid rain in the average condition of 12 years were analyzed, and the long-term data of acid rain observation was used. Further statistical analysis of the relationship between acid rain occurrence and meteorological factors, Based on the formation of atmospheric pollutant emission data monitored by Nantong Environmental Monitoring Station, the preliminary attribution analysis was carried out. The results show that: Lvsi, Nantong, Rugao Acid Rain Observatory in Nantong area have acid rain, and the frequency of occurrence is more than 50%. The probability of (strong) acid rain at Lu Si Station is greater than that of the other 2 stations; The pH is also the lowest. According to the analysis of the average annual rainfall pH and the frequency of (strong) acid rain, acid rain reached the strongest in the three stations around 2008. After 2014, the acidity of precipitation is decreasing and the acid rain rate is decreasing. Summer and autumn precipitation is lighter than winter and spring, and winter precipitation in Lvsi Station even reaches the level of strong acid rain pollution. The pH values of the three stations in Nantong area are all presented with the increase of precipitation levels, and the fluctuation trend of first falling and then rising. The conductivity of the three stations is significantly reduced with the increase of daily precipitation. It can be seen that the size of precipitation will affect the conductivity of precipitation. Compared with the pH and acid rain frequency of precipitation from the dominant wind direction, the degree of acid rain pollution at Lvsi Station is higher than that of Nantong Station and Rugao Station. The highest probability of acid rain at Lvsi Station and Nantong Station is the Southeast wind, and the frequency of acid rain at Rugao Station is from northeast to east wind. Analysis of the precipitation pH of Nantong Station on the day of precipitation in 2017 showed a more significant negative correlation with SO2、NO2、PM10 and PM2.5 on the same day, indicating that the more serious the atmospheric pollution on the day of precipitation, the stronger the acidity of precipitation. The changing trend of acid rain in Nantong can also indicate that emissions of atmospheric pollutants such as SO2 and NO2 have significantly decreased in recent years.
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