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CN 34-1054/N

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Investigation on the source of air pollutants in Hefei city based on backward trajectory model

  • School of Management, University of Science and Technology of China, Hefei 230026, China

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https://doi.org/10.3969/j.issn.0253-2778.2019.04.009
  • Received Date: 26 December 2017
  • Accepted Date: 27 July 2018
  • Rev Recd Date: 27 July 2018
  • Publish Date: 30 April 2019
    Abstract

  • Abstract

    The transport process of air pollutants in Hefei in 2014 was simulated, using the HYSPLIT(hybrid single-particle Lagrangian integrated trajectory)-4 backward trajectory model and NCEP(National Centers for Environmental Prediction) reanalysis data, and the mass concentration data of conventional atmospheric pollutants such as SO2, NO2, PM10 and PM2.5 were also used. The results showed that the air trajectories in Hefei had an obvious seasonal variation, and that the potential sources of pollutants in different seasons in Hefei were different.In January, the airflow in the northwest direction accounted for 43%, and the local airflow between cities accounted for 57%. The concentrations of SO2, NO2, PM10, and PM2.5 were very large. In April, the airflow from the Yangtze River Delta region accounted for 58%. The concentrations of various pollutants were very low. In July, the local airflow between cities accounted for 48%, and the airflow from the Yangtze River Delta region accounted for 24%. The PM10 concentration was higher, and the concentrations of other pollutants were lower. In October, the local airflow between cities accounted for 50%, the northern airflow accounted for 27%, and the airflow from the Yangtze River Delta region accounted for 23%. The PM10 concentration was higher, and the concentrations of other pollutants were lower. The main sources of air pollution in Hefei were mainly from the northern air masses, the air masses in the Yangtze River Delta region, and the local urban air masses.

    Abstract

    The transport process of air pollutants in Hefei in 2014 was simulated, using the HYSPLIT(hybrid single-particle Lagrangian integrated trajectory)-4 backward trajectory model and NCEP(National Centers for Environmental Prediction) reanalysis data, and the mass concentration data of conventional atmospheric pollutants such as SO2, NO2, PM10 and PM2.5 were also used. The results showed that the air trajectories in Hefei had an obvious seasonal variation, and that the potential sources of pollutants in different seasons in Hefei were different.In January, the airflow in the northwest direction accounted for 43%, and the local airflow between cities accounted for 57%. The concentrations of SO2, NO2, PM10, and PM2.5 were very large. In April, the airflow from the Yangtze River Delta region accounted for 58%. The concentrations of various pollutants were very low. In July, the local airflow between cities accounted for 48%, and the airflow from the Yangtze River Delta region accounted for 24%. The PM10 concentration was higher, and the concentrations of other pollutants were lower. In October, the local airflow between cities accounted for 50%, the northern airflow accounted for 27%, and the airflow from the Yangtze River Delta region accounted for 23%. The PM10 concentration was higher, and the concentrations of other pollutants were lower. The main sources of air pollution in Hefei were mainly from the northern air masses, the air masses in the Yangtze River Delta region, and the local urban air masses.
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    • References(22)
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    张文杰, 徐义生, 徐峻, 等. 日本核泄漏对我国北方典型区域的影响[J]. 环境科学研究, 2013, 26(3):274-280.
    [13]
    高晋徽, 朱彬, 王东东,等. 南京北郊O3、NO2和SO2浓度变化及长/近距离输送的影响[C]// 江苏省气象学会第七届学术交流会论文集. 苏州：江苏省气象学会，2011.
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    SHAN W, YIN Y, LU H, et al. A meteorological analysis of ozone episodes using HYSPLIT model and surface data[J]. Atmospheric Research, 2009, 93(4):767-776.
    [15]
    WANG F, CHEN D S, CHENG S Y, et al. Identification of regional atmospheric PM transport pathways using HYSPLIT, MM5-CMAQ and synoptic pressure pattern analysis[J]. Environmental Modelling & Software, 2010, 25(8):927-934.
    [16]
    STRONG J, WHYATT J D, HEWITT C N, et al. Development and application of a Lagrangian model to determine the origins of ozone episodes in the UK[J]. Atmospheric Environment, 2010, 44(5): 631-641.
    [17]
    KARACA F, ANIL I, ALAGHA O. Long-range potential source contributions of episodic aerosol events to PM10 profile of a megacity[J]. Atmospheric Environment, 2009, 43(36): 5713-5722.
    [18]
    MCGOWAN H, CLARK A. Identification of dust transport pathways from Lake Eyre, Australia using Hysplit[J]. Atmospheric Environment, 2008, 42(29): 6915-6925.
    [19]
    夏友龙, 朱抱真. 冬季亚洲大陆冷高压形成和发展的物理机制研究[J].应用气象学报, 1992, 3(2):206-211.
    [20]
    王颖, 石汉青. 用静止气象卫星云图对西太平洋副热带高压进退的个例研究[J]. 气象科学, 2006，26(3)：294-300.
    [21]
    GIGLIO L. MODIS collection 5 active fire product user’s guide version 2.4[R]. Lanham, MD: Science Systems and Applications, Inc., 2010.
    [22]
    钟方潜, 苏琪骅, 周任君, 等. 秸秆焚烧对区域城市空气质量影响的模拟分析[J]. 气候与环境研究, 2017, 22(2): 149-161.)
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    [1]
    程念亮, 李云婷, 张大伟, 等. 2014 年 10 月北京市 4 次典型空气重污染过程成因分析[J]. 环境科学研究, 2015, 28(2): 163-170.
    [2]
    朱佳雷, 王体健, 邢莉, 等. 江苏省一次重霾污染天气的特征和机理分析[J]. 中国环境科学, 2011, 31(12): 1943-1950.
    [3]
    赵恒, 王体健, 江飞, 等. 利用后向轨迹模式研究TRACE-P期间香港大气污染物的来源[J]. 热带气象学报, 2009, 25(2):181-186.
    [4]
    方利江, 傅贤康, 谢立峰,等. 舟山本岛大气污染输送过程的数值模拟分析[J]. 环境科学研究, 2014, 27(10):1087-1094.
    [5]
    王郭臣, 王珏, 信玉洁,等. 天津PM10和NO2输送路径及潜在源区研究[J]. 中国环境科学, 2014, 34(12):3009-3016.
    [6]
    BestApp工作室.PM25.in[DB/OL].[2017-11-20].http://www.pm25.in/.
    [7]
    NCEP.Global Data Assimilation System[DB/OL].[2017-11-20].ftp://arlftp.arlhq.noaa.gov/pub/archives/gdas1.
    [8]
    SIROIS A, BOTTENHEIM J W. Use of backward trajectories to interpret the 5-year record of PAN and O3 ambient air concentrations at Kejimkujik National Park, Nova Scotia[J]. Journal of Geophysical Research: Atmospheres, 1995, 100(D2): 2867-2881.
    [9]
    WARD JR J H. Hierarchical grouping to optimize an objective function[J]. Journal of the American Statistical Association, 1963, 58(301): 236-244.
    [10]
    王艳, 柴发合, 刘厚凤,等. 长江三角洲地区大气污染物水平输送场特征分析[J]. 环境科学研究, 2008, 21(1):22-29.
    [11]
    马锋敏. 北京及周边地区典型大气污染过程的数值模拟研究[D]. 南京：南京信息工程大学, 2007.
    [12]
    张文杰, 徐义生, 徐峻, 等. 日本核泄漏对我国北方典型区域的影响[J]. 环境科学研究, 2013, 26(3):274-280.
    [13]
    高晋徽, 朱彬, 王东东,等. 南京北郊O3、NO2和SO2浓度变化及长/近距离输送的影响[C]// 江苏省气象学会第七届学术交流会论文集. 苏州：江苏省气象学会，2011.
    [14]
    SHAN W, YIN Y, LU H, et al. A meteorological analysis of ozone episodes using HYSPLIT model and surface data[J]. Atmospheric Research, 2009, 93(4):767-776.
    [15]
    WANG F, CHEN D S, CHENG S Y, et al. Identification of regional atmospheric PM transport pathways using HYSPLIT, MM5-CMAQ and synoptic pressure pattern analysis[J]. Environmental Modelling & Software, 2010, 25(8):927-934.
    [16]
    STRONG J, WHYATT J D, HEWITT C N, et al. Development and application of a Lagrangian model to determine the origins of ozone episodes in the UK[J]. Atmospheric Environment, 2010, 44(5): 631-641.
    [17]
    KARACA F, ANIL I, ALAGHA O. Long-range potential source contributions of episodic aerosol events to PM10 profile of a megacity[J]. Atmospheric Environment, 2009, 43(36): 5713-5722.
    [18]
    MCGOWAN H, CLARK A. Identification of dust transport pathways from Lake Eyre, Australia using Hysplit[J]. Atmospheric Environment, 2008, 42(29): 6915-6925.
    [19]
    夏友龙, 朱抱真. 冬季亚洲大陆冷高压形成和发展的物理机制研究[J].应用气象学报, 1992, 3(2):206-211.
    [20]
    王颖, 石汉青. 用静止气象卫星云图对西太平洋副热带高压进退的个例研究[J]. 气象科学, 2006，26(3)：294-300.
    [21]
    GIGLIO L. MODIS collection 5 active fire product user’s guide version 2.4[R]. Lanham, MD: Science Systems and Applications, Inc., 2010.
    [22]
    钟方潜, 苏琪骅, 周任君, 等. 秸秆焚烧对区域城市空气质量影响的模拟分析[J]. 气候与环境研究, 2017, 22(2): 149-161.)
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