Journal of Ecology and Rural Environment ›› 2019, Vol. 35 ›› Issue (2): 167-173.doi: 10.19741/j.issn.1673-4831.2017.0831

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Study of Spatial and Temporal Distribution of Ozone and Its Influencing Factors in Ningxia Based on OMI

CHEN Xue-ping, XIAN Long, JU Tian-zhen, ZHANG Jiang-yu, WANG Pei-yu, LIU Hong-qing, PEI Jie   

  1. Department of Environmental Sciences, Graduate School of Geography and Environmental Sciences, Northwest Normal University, Lanzhou 730070, China
  • Received:2017-12-06 Online:2019-02-25 Published:2019-03-25


The spatial and temporal distribution tendency, as well as the influencing factors of atmospheric O3 in Ningxia region from 2006 to 2016 were analyzed using the OMI sensor satellite inversion data. For the time distribution, the interannual variation of ozone column concentration increased during the years before 2010, reaching to maximum value of 368.23 DU, and then decreased with the years, reaching a minimum value of 287.57 DU in 2016. The average annual growth rate of ozone column before 2010 was 2.95% and then the average annual reduction rate is 3.2%. The ozone column concentration had an obvious season change characteristics. The seasonal mean concentration was the highest in spring and was the lowest in autumn. The mean seasonal values in 11 years had the same order of spring (325.61 DU) > winter (290.92 DU) > summer (268.19 DU) > autumn (265.61 DU). For the spatial distribution, due to the effect of the prevailing wind of the northern atmosphere, the high ozone column concentration areas were mainly distributed in the northern and southwestern regions in the study area. With the interannual changes, the high ozone column concentration areas had the characteristic moving tendency of from north to south and from east to west. The ozone column concentration in the study areas was little affected by several human factors, and it was negatively correlated with atmospheric NO2 column concentration with the correlation coefficient of 0.683. It was greatly affected by the photochemical reaction of precursors, as well as and atmospheric transport of prevailing wind and north wind.

Key words: OMI, atmosphere O3, Ningxia area, spatial and temporal distribution

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