Journal of Ecology and Rural Environment ›› 2019, Vol. 35 ›› Issue (8): 992-999.doi: 10.19741/j.issn.1673-4831.2018.0445

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The Influence of Meteorological Conditions on a Heavy Ozone Pollution Process in Chengde City

LU Qian1,2, WANG Guo-hui3, FENG Yi-chun1, ZHOU Shi-ru1, TAN Guo-ming1   

  1. 1. Key Laboratory of Meteorology and Ecological Environment of Hebei Province, Shijiazhuang 050021, China;
    2. Chengde Meteorological Bureau, Chengde 067000, China;
    3. Department of Foreign Languages and Tourism, Chengde Petroleum College, Chengde 067000, China
  • Received:2018-07-30 Online:2019-08-25 Published:2019-08-22

Abstract:

Based on the meteorological data of Chengde Meteorological Station and the O3 data of Chengde Environmental Monitoring Station, the meteorological conditions of O3 heavy pollution process from May 22 to June 1, 2015 were analyzed. It was found that from May 22 to June 1, O3 pollution presented a trend of first increase and then decrease, and O3 pollution was the most serious on May 25, and that the daily distribution of O3 concentration was unimodal, with high concentration in the afternoon and low concentration in the morning. The weather situation during the O3 pollution in Chengde City was as follows:500 hPa was controlled by high pressure ridges; 850 hPa had more than 20℃ warm center with a strong warm advection flowing to Chengde City, the southerly airstream prevailed because the sea level pressure field was affected by the mean pressure field at the front of the low pressure and at the rear of the high pressure. The meteorological conditions contributed to O3 pollution include high temperature, high wind speed, strong radiation, long sunshine hours, low atmospheric pressure, low relative humidity, but less-affected visibility. The meteorological conditions for the O3 pollution process are favorable, and the effect of the meteorological conditions on O3 pollution is mainly to promote the generation and regional transmission of O3 pollutants. In this process, the middle and northern part of Beijing, Tianjin and Hebei Province suffered severe O3 pollution. With the help of south wind and southwest wind, the O3 pollution was transported to Chengde from Tangshan and Beijing City.

Key words: O3, weather condition, meteorological condition, Chengde City

CLC Number: