生态环境学报Issue(7)：1191-1196,6.DOI:10.16258/j.cnki.1674-5906.2015.07.017
福州市CO时空分布特征与影响因素
Temporal and Spatial Variation Characteristics and the Impact Factors of CO in Fuzhou
摘要
Abstract
CO was listed in basic ambient air pollution items in “ambient air quality standards” revised by Ministry of Environmental protection of the People’s Republic of China in 2012. For forecast operation, there’s a pressing need to establish the forecast conceptual model of CO for Fuzhou, which is the key city in Fujian. The temporal and spatial variation characteristics of CO,the relationship between CO and other pollutants, and the effect of synoptic situations and meteorological factors on CO were analyzed using observation data in Fuzhou. The pollutant parameters observed from 2011 to 2013 included mass concentrations of CO, NO2 and O3 from 6 environmental monitoring points, and conventional meteorological observation data and synoptic situations recorded by cluster analysis method.The results showed that high annual average mass concentration of CO was in the environmental monitoring point where had more industrial and traffic sources. Mass concentration was higher in urban monitoring points than that in suburb and mountain. The 24-hour average mass concentration didn’t exceed standard. Quarterly average mass concentration was highest in winter, and then in spring and autumn, lowest in summer, which was 0.68 times that in winter. The highest mass concentration was in January and April, and it was higher in winter half year than that in summer half year. The highest mass concentration in a day appeared at 7:00─10:00 and 17:00─20:00, while lowest at 13:00─16:00. The mass concentration fluctuated in the daytime, while kept low and steady-going in the night. There was a significant positive correlation between the mass concentration of CO and NO2, and the correlation coefficient was highest in autumn 0.658, and there was a negative correlation between the mass concentration of CO and O3 (except in summer). Higher mass concentration of CO was in the pre frontal warm sector, posterior of high pressure, shear and upper trough, ground inverse trough, successively. Lower mass concentration of CO was in the subtropical high, outside of typhoon (intertropical convergence zone), typhoon (intertropical convergence zone), near the subtropical high, pressure ridge, bottom of high pressure, successively. Atmospheric diffusion conditions, photochemical effect, and wind speed were the major factors of the mass concentration of CO, while rainfall wasn’t an important factor.关键词
CO/时空分布/天气形势/潜势预报Key words
CO/temporal and spatial variation/synoptic situation/potential prediction分类
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..福州市CO时空分布特征与影响因素[J].生态环境学报,2015,(7):1191-1196,6.基金项目
福建省科技厅重点项目 （）
