摘要
为探讨山地气候背景夏季气象条件对臭氧(O_(3))的影响,利用2013-2017年重庆市北碚区3个环境监测站点日值数据集和相关气象要素资料,运用综合数理统计方法,对北碚区O_(3)浓度的特征变化以及夏季气象条件对重庆北碚区O_(3)的影响进行分析,并通过HYSPLIT模型方法查找O_(3)传输路径,分析其潜在源区.结果表明,北碚区O_(3)高浓度主要集中在7月下旬至8月,且缙云山站点O_(3)浓度最高.夏季气象条件对O_(3)污染有着密切的联系,当日平均气温达到30~35℃,日极端最高气温在35~40℃时,O_(3)超标率达到最高.日照时数对O_(3)浓度呈正相关性,相对湿度、降水对O_(3)浓度呈负相关性.北碚区夏季O_(3)污染输送较重的气团路径主要来自东北方以及东南方,夏季O_(3)污染高浓度主要受四川盆地成都周边城市群、重庆本地和贵州北部的影响.
In order to understand deeply the impact of summer meteorological conditions on ozone in mountain climate background,the characteristics of ozone concentration in Beibei and the impact of summer meteorological conditions on ozone in Beibei,Chongqing,have been analyzed in this paper by means of the daily data sets(2013—2017) and relevant meteorological elements data of three environmental monitoring stations in Beibei,Chongqing,The ozone transport path and potential source area have also been analyzed based on hysplit model.The results show that the high concentration of ozone in Beibei is mainly concentrated in late July to August,and the highest concentration of ozone is in Jinyun Mountain.O_(3)zone is closely related to meteorological conditions in summer.When the daily average temperature reaches 30-35 ℃,and the daily extreme maximum temperature reaches 35-40 ℃,the ozone exceeding standard rate is the highest.O_(3)zone concentration was positively correlated with sunshine hours,and negatively correlated with relative humidity and precipitation.In summer,the heavy ozone transport path in Beibei mainly comes from northeast and Southeast.The high concentration of ozone pollution in summer is mainly affected by the urban agglomeration around Chengdu in Sichuan Basin,Chongqing and Northern Guizhou.
作者
吉莉
刘晓冉
张新科
李强
JI Li;LIU Xiaoran;ZHANG Xinke;LI Qiang(Weather Bureau in Beibei District of Chongqing City,Chongqing 400700,China;Chongqing Institute of Meteorological Sciences,Chongqing 401147,China;Weather Bureau in Rongchang District of Chongqing City,Chongqing 402460,China)
出处
《西南师范大学学报（自然科学版）》
CAS
2022年第9期99-110,共12页
Journal of Southwest China Normal University(Natural Science Edition)
基金
重庆市气象局业务技术攻关项目(YWJSGG-202134)资助。
关键词
夏季
气象条件
臭氧
影响研究
潜在源区
summer
meteorological conditions
ozone
impact study
potential source area
