摘要
应用去趋势互相关分析法对比分析了成都市2013年7月1日至8月31日和2014年1月1日至2月28日等2个时间段4个大气环境监测站点近地面O3与前体物(NO2)小时平均浓度的相关性及其时空演化尺度特征.研究表明,成都市4个监测站点近地面O3与NO2小时平均浓度波动的相关性在一定时间尺度内具有长期持续特征.并对成都市夏季和冬季近地面O3与NO2相关性进行了对比分析,探讨了导致此种差异的原因.结果表明,不同的气象条件下成都市O3与NO2相互作用的时间尺度存在显著差异.其差异性可能与成都市独特的盆地气候特点以及当地夏季与冬季太阳光辐射、日照数、气温等气象因子有关.研究结果有助于进一步加深对盆地气候条件下成都市O3污染特征的认识.
The correlations between ground-level NO2 and O3 concentration are analyzed by the method of detrended cross-correlation analysis,based on the observational data in the urhan area of Chengdu （cap- ital of Sichuan Provincial,China） from July 1 to August 31,2013 and from January I to February 28, 2014. The results show that the correlation between NO2 and O3 concentration are characterized by long- term persistence. Furthermore,a comparative study of the correlation of NO2 and O3 in the summer and winter is made, and the reason for the differences are analyzed. It shows that there were significant differ- ences in meteorological conditions on the different time scale of the interaction between NO2 and O3. It was found that the differences are due to solar radiation, sunshine hours and temperature. The results help to deepen the understanding the pollution characteristic of O3 in Chengdu.
出处
《吉首大学学报（自然科学版）》
CAS
2015年第1期61-66,共6页
Journal of Jishou University(Natural Sciences Edition)
基金
湖南省教育厅科学研究青年资助项目(13B089)
湖南省自然科学基金青年人才培养联合基金资助项目(13JJB012)
关键词
O3
气象条件
NO2
去趋势互相关分析法
O3
meteorological condition
NOz
detrended cross-correlation analysis
