主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

Journal of Meteorology and Environment ›› 2021, Vol. 37 ›› Issue (2): 64-70.doi: 10.3969/j.issn.1673-503X.2021.02.009

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The influences of meteorological factors and sea breeze on ozone pollution in Qinhuangdao

Shi-ru ZHOU1(),Jin-mei SONG2,Qian LU1,Hong-ming GUO2,Yu-guang ZHAO3,*(),Yan-chun GAO1   

  1. 1. Chengde Meteorological Service, Chengde 067000, China
    2. Qinhuangdao Meteorological Service, Qinhuangdao 066000, China
    3. Hebei Environmental Meteorological Center, Shijiazhuang 050021, China
  • Received:2019-10-01 Online:2021-04-01 Published:2021-04-02
  • Contact: Yu-guang ZHAO E-mail:172319901@qq.com;zyg_9@163.com

Abstract:

Based on the data of air pollution concentration from Qinhuangdao environmental monitoring station, the meteorological data from Qinhuangdao meteorological observation station and buoy station, the characteristics of O3 pollution and its response to meteorological factors and the sea breeze were researched.Results show that the monthly variation of O3 pollution in Qinhuangdao is characterized by the most serious in May-June and September, and no day with O3 exceeding the standard in October-December and January-February.The diurnal variation of O3 is unimodal distribution i.e.the O3 concentration is highest in the afternoon and lowest in the morning.In general, the key meteorological factors triggering O3 pollution in Qinhuangdao are solar radiation of 850-950 W·m-2, daily maximum temperature over 32 ℃, relative humidity of 50%-60%, no precipitation, and SW or SSW wind dominant respectively.The sea breeze in Qinhuangdao is the most common phenomenon from June to August, with a frequency of over 50%.Usually, the sea breeze starts to appear at 8-10 a.m., reaches its maximum at noon-3 p.m., and weakens and is over after the evening.The average concentrations of O3-8h on days with the sea breeze from May to June and August to September are higher than those on days without sea breeze, and the monthly average concentrations of O3-8h on days with the sea breeze in May, June, and September are as high as 155-166 μg·m-3.All these indicate that the circulation of sea-land breeze plays a role in aggravating O3 pollution in Qinhuangdao.

Key words: Ozone, Meteorological factor, Sea breeze

CLC Number: