天津市夏季重污染天气过程PM<sub>2.5</sub>输送特征

孟丽红; 郝天依; 李培彦; 吴彬贵; 王雪莲

doi:10.12153/j.issn.1674-991X.20190058

天津市夏季重污染天气过程PM_2.5输送特征

doi: 10.12153/j.issn.1674-991X.20190058

1.
天津市气象科学研究所
2.
天津市环境气象中心

详细信息

作者简介:
孟丽红(1979—),女,工程师,硕士,主要从事大气环境研究, menglh@126.com

中图分类号: X513
计量
- 文章访问数: 485
- HTML全文浏览量: 166
- PDF下载量: 91
- 被引次数: 0
出版历程
- 收稿日期: 2019-04-17
- 刊出日期: 2020-01-20

Transport characteristics of PM_2.5 of heavy pollution weather in Tianjin in summer

1.
Tianjin Institute of Meteorological Science
2.
Tianjin Environmental Meteorological Centre

摘要

摘要: 利用环境监测、气象常规观测、美国国家环境预报中心(NCEP)再分析等资料,采用气溶胶激光雷达和HYSPLIT模式对2018年8月1—2日发生在天津市夏季的一次重污染天气过程进行分析。结果表明:地面弱气压场、低空逆温和偏东暖湿气流的输送为此次重污染形成提供了有利条件;气溶胶激光雷达分析表明,此次污染过程存在明显的水平输送和垂直分布特征,市区PM_2.5浓度升高除与水平输送有关,还与本地低空逆温造成的PM_2.5积累密切相关;HYSPLIT模式后向轨迹追踪研究表明,PM_2.5前期积累爬升阶段,气团主要来自偏南气流,200、500、1 000 m高度气团均有明显沉降,后期气团来向转变为较清洁的偏东暖湿气流,但同时带来大量水汽,造成天津市相对湿度的增加。此次污染过程前期是由于静稳天气形势导致PM_2.5积累,后期主要是天津市各区县之间PM_2.5的输送以及偏东暖湿气流输送水汽导致相对湿度的增加,污染进一步加重。
- 夏季 /
- 重污染天气过程 /
- PM_2.5 /
- 输送 /
- 后向轨迹
Abstract: Based on the data of environmental monitoring, conventional meteorological observation and NCEP reanalysis, aerosol lidar and HYSPLIT model were used to analyze one PM_2.5 heavy pollution process in Tianjin in summer on Aug.1 and Aug.2, 2018. The results showed that the weak pressure of surface field, temperature-inversion layer in the boundary and east warm-humid airflow accelerated the accumulation of pollutants. Aerosol lidar analysis showed that the pollution process had obvious horizontal and vertical distribution characteristics. The increasing of PM_2.5 concentration in urban area was not only related to the horizontal transport, but also closely related to the accumulation of pollutants caused by temperature-inversion layer in the boundary. The backward trajectory tracking by HYSPLIT model showed that in the early stage of cumulative climb of PM_2.5, air masses mainly came from south, and the air masses had obvious settlement at 200, 500 and 1 000 m altitudes during the climbing phase of PM_2.5 concentration. The eastward warm airflow brought the clearer air as well as a lot of moisture, which resulted the increasing of relative humidity during the later stage pollution. The static weather situation caused the accumulation of pollutants on the early stage, while and the transportation of pollutants between the urban areas of Tianjin as well as the increasing of relative humidity caused by the eastward warm humid airflow aggravated pollution on the later stage.
- summer /
- heavy pollution process /
- PM_2.5 /
- transportation /
- backward trajectory

HTML全文

参考文献(24)

[1]	CHAN C K, YAO X H . Air pollution in mega cities in China[J]. Atmospheric Environment, 2008,42(1):1-42.
[2]	CHEN Z F, BARROS C P, GIL-ALANA L A , et al.The persistence of air pollution in four mega-cities of China[J]. Habitat International, 2016,56:103-108.
[3]	POPE C A, BURNETT R T, THUN M J , et al. Lung cancer, cardiopulmonary, and long-term exposure to fine particulate air pollution[J]. Journal of the American Medical Association, 2002,287(9):1132-1141.
[4]	CHAN Y C, SIMPSON R W, MCTAINSH G H , et al. Source apportionment of visibility degradation problems Brisbane(Australia)using multiple liner regression techniques[J]. Atmospheric Environment, 1999,33:3237-3250.
[5]	GRAZIA M M, STEFANO V, GIANLUIGI V , et al. Characteristics of PM₁₀ and PM_2.5 particulate matter in the ambient air of Milan[J]. Atmospheric Environment, 2001,35(27):4639-4650.
[6]	DUAN F K, HE K B, MA Y L , et al. Concentration and chemical characteristics of PM_2.5 in Beijing,China:2001-2002[J]. Science of the Total Enviroment, 2006,355(1/2/3):264-275.
[7]	LI L, WANG W, FENG J L , et al. Composition,source,mass closure of PM_2.5 aerosols for four forests in eastern China[J]. Journal of Environment Science, 2010,31(3):405-412.
[8]	ZHAO X J, ZHAO P S, XU J , et al. Analysis of a winter regional haze event and its formation mechanism in the North China Plain[J]. Atmospheric Chemistry and Physics Discussions, 2013,13(1):903-933.
[9]	廖晓农, 张小玲, 王迎春 , 等. 北京地区冬夏季持续性雾霾发生的环境气象条件对比分析[J]. 环境科学, 2014,35(6):2031-2044. LIAO X N, ZHANG X L, WANG Y C , et al. Comparative analysis on meteorological condition for persistent haze cases in summer and winter in Beijing[J]. Environmental Science, 2014,35(6):2031-2044.
[10]	刘瑞婷, 韩志伟, 李嘉伟 . 北京冬季雾霾事件的气象特征分析[J]. 气候与环境研究, 2014,19(2):164-172. LIU R T, HAN Z W, LI J W . Analysis of meteorological characteristics during winter haze events in Beijing[J]. Climatic and Environmental Research, 2014,19(2):164-172.
[11]	曹伟华, 梁旭东, 李青春 . 北京一次持续性雾霾过程的阶段性特征及影响因子分析[J]. 气象学报, 2013,71(5):940-951. CAO W H, LIANG X D, LI Q C . A study of the stageful characteristics and influencing factors of a long-lasting fog/haze event in Beijing[J]. Acta Meteorologica Sinica, 2013,71(5):940-951.
[12]	刘端阳, 张婧, 吴序鹏 , 等. 淮安一次雾霾过程的污染物变化特征及来源分析[J]. 大气科学学报, 2014,37(4):482-492. LIU D Y, ZHANG J, WU X P , et al. Characteristics and sources of atmospheric pollutants during a fog-haze process in Huai’an[J]. Transactions of Atmospheric Sciences, 2014,37(4):482-492.
[13]	谢真珍, 范秀莲, 王月林 , 等. 淮安地区一次持续性雾霾过程阶段性特征及影响因子分析[J]. 气象与环境学报, 2015,31(5):79-85. XIE Z Z, FAN X L, WANG Y L , et al.Phase characteristics of a persistent fog and haze process and its influencing factors in Huaian area[J]. Journal of Meteorology and Environment, 2015,31(5):79-85.
[14]	邓雪娇, 吴兑, 唐浩华 , 等. 南岭山地一次锋面浓雾过程的边界层结构分析[J]. 高原气象, 2007,26(4):881-889. DENG X J, WU D, TANG H H , et al. Analyses on boundary layer structure of a frontal heavy fog process in Nanling Mountain Area[J]. Plateau Meteorology, 2007,26(4):881-889.
[15]	濮梅娟, 张国正, 严文莲 , 等. 一次罕见的平流辐射雾过程的特征[J]. 中国科学D辑:地球科学, 2008,38(6):776-783.
[16]	杨军, 王蕾, 刘端阳 , 等. 一次浓雾过程的边界层特征及生消物理机制[J]. 气象学报, 2010,68(6):998-1006. YANG J, WANG L, LIU D Y , et al. The boundary layer structure and the evolution mechanisms of a deep dense fog event[J]. Acta Meteorologica Sinica, 2010,68(6):998-1006.
[17]	孟丽红, 张敏, 韩素芹 . 天津市郊区冬季大气边界层风、温场结构与特征[J]. 中国环境科学, 2012,32(10):1758-1763. MENG L H, ZHANG M, HAN S Q . Structures and characteristics of the atmospheric boundary layer in winter of the Tianjin suburb[J]. China Environmental Science, 2012,32(10):1758-1763.
[18]	孟丽红, 李英华, 韩素芹 , 等. 海陆风对天津市PM_2.5和O₃质量浓度的影响[J]. 环境科学研究, 2019,32(3):390-398. MENG L H, LI Y H, HAN S Q , et al. Influence of sea-land breeze on the concentrations of PM2.5 and O3 in Tianjin City[J]. Research of Environmental Science, 2019,32(3):390-398.
[19]	许建明, 常炉予, 马井会 , 等. 上海秋冬季PM_2.5污染天气形势的客观分型研究[J]. 环境科学学报, 2016,36(12):4303-4314. XU J M, CHANG L Y, MA J H , et al. Objective synoptic weather classification on PM2.5 pollution during autumn and winter seasons in Shanghai[J]. Acta Scientiae Circumstantiae, 2016,36(12):4303-4314.
[20]	姚青, 蔡子颖, 张长春 , 等. 天津地区大气气溶胶质量浓度分布特征与影响因素[J]. 生态环境学报, 2010,19(9):2225-2231. YAO Q, CAI Z Y, ZHANG C C , et al. Variety characteristics and influence factors of aerosol mass concentrations in Tianjin City[J]. Ecology and Environmental Sciences, 2010,19(9):2225-2231.
[21]	姚青, 马志强, 林伟立 , 等. 天津夏季边界层低层大气中PAN和O₃的输送特征分析[J]. 环境科学, 2019,40(1):67-75. YAO Q, MA Z Q, LIN W L , et al. Transport characteristics of PAN and O3 in the lower atmosphere of the boundary layer in Tianjin in summer[J]. Environmental Science, 2019,40(1):67-75.
[22]	刘大猛, 黄杰, 高少鹏 , 等. 北京市区春季交通源大气颗粒物的污染水平及其影响因素[J]. 地学前缘, 2006,13(2):228-233.
[23]	赵晨曦, 王云琦, 王玉杰 , 等. 北京地区冬春PM_2.5和PM₁₀污染水平时空分布及其与气象条件的关系[J]. 环境科学, 2014,35(2):418-427. ZHAO C X, WANG Y Q, WANG Y J , et al. Temporal and spatial distribution of PM2.5 and PM10 pollution status and the correlation of particulate matters and meteorological factors during winter and spring in Beijing[J]. Environmental Science, 2014,35(2):418-427.
[24]	GAO T Y, HAN L, WANG B , et al. Peroxyacetyl nitrate observed in Beijing in August from 2005 to 2009[J]. Journal of Environmental Sciences, 2014,26(10):2007-2017.