摘要
于2010年1～12月期间,在上海城区内采用在线连续观测,分析该地区近地臭氧与其前体物的季节变化规律及相关性,探讨了臭氧浓度与OX和NO2光解速率之间的关系。结果表明,观测期间,上海地区O3总超标天数为13天,超标率为3.56%。O3浓度变化呈现明显的秋冬低、春夏高的季节变化。O3浓度日变化规律呈典型单峰变化,O3各前体物呈双峰形分布,冬季O3与NOX的相关性最强。对OX的贡献中,秋冬以NO2为主,春夏以O3为主;夜间以NO2为主,白天以O3为主。臭氧浓度与OX和NO2光解速率变化规律基本一致。
Continuous monitoring was conducted during January to December 2010 in urban area of Shanghai,to analyze the seasonal variation of troposphere ozone concentration and correlations with its precursors.Results show that the frequency of ozone concentration higher than 93ppbv（GB3095-1996） during this period is 3.56%.Concentration of ozone is relatively high in spring and summer,while low in autumn and winter.The diurnal variation of ozone concentration show a clear cycle with one peak at noon,while its precursors have two peaks.NO2 is the major component of OX in autumn and winter while ozone accounts for the majority of OX in spring and summer,in the meantime,ozone dominates in daytime and NO2 at night.Variation of ozone concentration complies with those of OX concentration and NO2 photolysis rate.
出处
《中国环境监测》
CAS
CSCD
北大核心
2011年第5期44-49,共6页
Environmental Monitoring in China
