基于GAM模型的合肥市臭氧时空分布特征及影响因素研究  

Study on the Spatial and Temporal Distribution Characteristics and Influencing Factors of Ozone in Hefei Based on Generalized Additive Model

作　　者：卫尤文 郑志侠 汪水兵[2] 张红[2] 易明建[2] 陈建 Wei Youwen;Zheng Zhixia;Wang Shuibing;Zhang Hong;Yi Mingjian;Chen Jian(College of Biological Food and Environment,Hefei University,Hefei,Anhui 230601,China;Anhui Institute of Environment Science,Hefei,Anhui 230071,China)

机构地区：[1]合肥学院生物食品与环境学院,安徽合肥230601 [2]安徽省环境科学研究院,安徽合肥230071

出　　处：《绿色科技》2020年第22期78-82,共5页Journal of Green Science and Technology

基　　金：合肥学院人才科研基金项目(编号:18-19RC07);安徽省重点研究与开发计划(编号:1804a0802196);安徽省环保科研项目(编号:ky2018-04-3)。

摘　　要：利用广义相加模型(GAM)对2018年合肥市臭氧和气象因子进行了耦合分析。结果表明:合肥市郊区O3年均浓度及最大小时浓度均较市区高;且有明显的季节变化特征:夏季(90.4±14.8)μg/m^3>春季(74.1±12.2)μg/m^3>秋季(57±8.1)μg/m^3>冬季(39.1±9.5)μg/m^3。O3浓度日变化呈单峰型分布,在7:00左右出现最小值,峰值在15:00左右。基于GAM分析发现O3浓度与气压、气温、相对湿度、风速、降水量间均呈非线性关系,其中相对湿度、温度、气压对合肥市O3浓度影响较大,而风速、降水量对O3浓度影响相对较小。The generalized additive model(GAM)was used to conduct a coupled analysis of ozone and meteorological factors in Hefei in 2018.The results show that the annual average concentration and maximum hourly concentration of O3 in the suburbs of Hefei are higher than those in the urban area.And there are obvious seasonal characteristics:summer(90.4±14.8)μg/m 3>spring(74.1±12.2)μg/m 3>autumn(57±8.1)μg/m 3>winter(39.1±9.5)μg/m 3.The daily variation of O3 concentration showed a single-peak distribution,with a minimum value around 7:00 and a peak around 15:00.Based on GAM analysis,it is found that the O3 concentration has a nonlinear relationship with air pressure,air temperature,relative humidity,wind speed,and precipitation.Among them,relative humidity,temperature,and air pressure have a greater impact on O3 concentration in Hefei,while wind speed and precipitation have a relatively small impact on O3 concentration.

关 键 词：O3浓度 时空分布 广义相加模型(GAM) 影响因素 

分 类 号：P421.33[天文地球—大气科学及气象学]