本文關(guān)鍵詞： 京津冀 臭氧 時空分布　出處：《中國環(huán)境監(jiān)測》2017年01期 　論文類型：期刊論文

【摘要】：為研究京津冀區(qū)域的臭氧(O_3)污染情況及其時空分布特征,對2013—2015年京津冀區(qū)域13個城市80個國家環(huán)境空氣監(jiān)測點位的監(jiān)測數(shù)據(jù)進行了統(tǒng)計分析。結(jié)果表明:2013—2015年,京津冀區(qū)域O_3污染狀況整體呈加重趨勢,其中2014年污染狀況最為嚴(yán)重。13個城市中O_3污染最嚴(yán)重的城市為北京和衡水,連續(xù)3年均超標(biāo),且處于上升態(tài)勢中。區(qū)域內(nèi)不同城市O_3污染趨勢并不相同。京津冀區(qū)域O_3濃度變化呈明顯的季節(jié)變化特征,春末和夏季的O_3污染最嚴(yán)重。O_3-8 h(臭氧日最大8 h均值)年均值的高值區(qū)主要分布在北京中北部、承德和衡水等,2013—2015年第90百分位O_3-8 h的高值區(qū)均集中分布在北京。O_3的濃度峰值時間要晚于NOx2~5 h。O_3在春、夏季呈單峰分布,白天15:00左右出現(xiàn)最大值,在秋、冬季濃度較低,全天波動不大。
[Abstract]:In order to study the status of ozone pollution and its spatial and temporal distribution in Beijing-Tianjin-Hebei region, the monitoring data of 80 national ambient air monitoring points in 13 cities of Beijing-Tianjin-Hebei region from 2013 to 2015 were analyzed statistically. The results show that: 2013-2015, In Beijing, Tianjin and Hebei, the overall situation of O _ 3 pollution increased, with the most serious pollution in 2014. Among the 13 cities, Beijing and Hengshui were the most polluted cities, which exceeded the standard for three years in a row. The trend of O _ 3 pollution in different cities is not the same. The variation of O _ 3 concentration in Beijing-Tianjin-Hebei region is seasonal. In late spring and summer, the high value area of the annual mean value of the annual mean value of O _ 3 pollution in late spring and summer is mainly located in the central and northern part of Beijing. The high value regions of 90th percentile in Chengde and Hengshui from 2013 to 2015 were concentrated in Beijing. O _ 3 concentration peak time was later than that of NOx2~5 h 路O _ (3) in spring and summer, the maximum value appeared at about 15:00 in daytime, and the concentration was lower in autumn and winter. There is little fluctuation throughout the day.
【作者單位】： 中國地質(zhì)大學(xué)(北京)水資源與環(huán)境學(xué)院;中國環(huán)境監(jiān)測總站國家環(huán)境保護環(huán)境監(jiān)測質(zhì)量控制重點實驗室;
【分類號】：X515

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本文編號：1511881