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后藏地区与黄河三角洲典型城市臭氧浓度比较分析
Comparative Analysis of Ozone Concentration in Typical Cities of the Tsang Region and the Yellow River Delta
投稿时间:2020-04-19  修订日期:2020-07-05
DOI:10.19316/j.issn.1002-6002.2020.04.05
中文关键词:  日喀则  东营  臭氧  气象参数
英文关键词:Shigatse  Dongying  ozone  meteorological parameter
基金项目:
作者单位
李吉东 山东省东营市环境信息与监控中心,山东东营257091 
张雪兰 西藏自治区日喀则生态环境监测中心,西藏日喀则857000 
吴诗剑 上海市环境监测中心,上海200235 
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中文摘要:
      后藏地区典型城市日喀则市和黄河三角洲典型城市东营市的大气首要污染物在2019年5—9月均为臭氧(O3)。虽然日喀则市O3超标天数少,但其年平均浓度高于东营市。两地地理气候、产业结构差异巨大,但O3年均浓度非常接近。对日喀则市和东营市的O3污染特征进行分析,并探讨O3污染的影响因素。结果表明:后藏地区紫外辐射强烈,大气环境中O3的本底浓度值较高;与东营市相比,日喀则市春季O3浓度最高,全年最高值出现在5月,比东营市早1个月。NO2对日喀则市O3的生成影响有限,对东营市O3的生成影响明显;PM2.5对日喀则市O3的生成影响较小,对东营市O3的生成影响较明显;CO对日喀则市和东营市O3的生成均有一定影响。超低湿度和长时间日照的气象环境有利于日喀则市O3浓度的上升,高温、60%~70%的相对湿度和长时间日照的气象环境有利于东营市O3浓度的上升。
英文摘要:
      Ozone was the primary pollutant in the atmosphere of typical cities of Shigatse located in the Tsang region and Dongying located in the Yellow River Delta during May to September 2019. Although the days of ozone exceeding standard in Shigatse city were less, but the annual average concentration was higher than Dongying city located in the Yellow River Delta. There are great differences in geographical climate and industrial structure between the two places, but the annual average concentration of O3 was very close. The characteristics of ozone pollution in Shigatse and Dongying were analyzed, and the influencing factors of ozone pollution were discussed. The results showed that the UV radiation was strong and the background concentration of O3 in atmospheric environment was higher in the Tsang region. Compared with Dongying, Shigatse had the highest ozone concentration in spring, and peaked in May, one month earlier than Dongying. The effect of NO2 on the ozone formation was limited in Shigatse,but obvious in Dongying. PM2.5 had less impact on ozone formation in Shigatse and had obvious effect on ozone formation in Dongying. CO had a certain influence on ozone formation both in Shigatse and Dongying. Ultra-low humidity and long hours of sunshine were conducive to the increase of ozone concentration in Shigatse. High temperature, 60% to 70% relative humidity and long hours of sunshine were conducive to the increase of ozone concentration in Dongying.
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