引用本文:王爱平,陈诚,王剑,曹军,陆维青,徐政.一次强沙尘过程对江苏省空气质量的影响研究[J].环境监控与预警,2021,13(6):18-23
WANG Ai-ping, CHEN Cheng, WANG Jian,CAO Jun, LU Wei qing, XU Zheng.Study on Air Quality Impacted by a Strong Sand-Dust Process in Jiangsu Province[J].Environmental Monitoring and Forewarning,2021,13(6):18-23
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一次强沙尘过程对江苏省空气质量的影响研究
王爱平,陈诚,王剑,曹军,陆维青,徐政1,2,3
1.江苏省环境监测中心,江苏 南京 210036;2. 江苏省苏力环境科技有限责任公司,江苏 南京 210019;3. 江苏蓝创智能科技股份有限公司,江苏 无锡 214100
摘要:
2021年3月15—17日,江苏省自北向南经历了一次严重沙尘污染过程,在此期间对连云港和苏州2市的PM10和PM2.5质量浓度,以及退偏振比参数进行连续观测,结合后向轨迹(HYSPLIT)模型对沙尘气团来向进行分析。结果表明,本次沙尘过程起源于蒙古国南部,起沙之后自西北至东南传输,约24h后开始影响江苏省。受其影响,江苏省3月16日4市达重度污染,沙尘对苏北和苏南城市影响差异较大,连云港市PM10质量浓度短时高达978μg/m3,近地面至高空2 km退偏振比值达0.3左右,沙尘特征较明显;苏州市受沙尘影响时间较连云港滞后约14 h,PM10质量浓度峰值仅为155 μg/m3,以浮尘天气为主。
关键词:  沙尘  可吸入颗粒物  细颗粒物  江苏省
DOI:
分类号:X823
基金项目:江苏省PM2.5和臭氧污染协同控制重大专项基金资助项目(2019023)
Study on Air Quality Impacted by a Strong Sand-Dust Process in Jiangsu Province
WANG Ai-ping, CHEN Cheng, WANG Jian,CAO Jun, LU Weiqing, XU Zheng1,2,3
1. Jiangsu Provincial Environmental Monitoring Center,Nanjing, Jiangsu 210036,China;2. Jiangsu Suli Environmental Technology Co., Ltd.,Nanjing, Jiangsu 210019,China;3. Jiangsu Lanchuang Intelligent Technology Co.,Ltd.,Wuxi, Jiangsu 214100,China
Abstract:
From 15 to 17 of March 2021, Jiangsu was sufferring a severe air pollution impacted by a sand dust storm. The concentration of PM10 and PM2.5, the depolarization ratio of particulate matter, and the backward trajectory by HYSPLIT were analyzed. The results showed that the air pollution process was a typical sand dust transportation from the northwest to the southeast, which originated in southern Mongolia and began to affect Jiangsu Province 24 hours later. On March 16, the air quality of 4 cities in Jiangsu have reached heavy pollution. There were significant differences in the impact of sand dust on the southern and northern regions of Jiangsu. The characteristics of sand dust pollution in Lianyungang in northern Jiangsu were more obvious, with a peak hourly PM10 concentration of 978 μg/m3. The aerosol depolarization ratio in Lianyungang was about 0.3 from near the ground to 2 km altitude. The sand dust pollution in Suzhou was 14 hours later than that in Lianyungang, and the pollution level had been reduced to floating dust, with the PM10 peak value 155 μg/m3.
Key words:  Dust storm  PM10  PM2.5  Jiangsu Province