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基于EOF/SVD的2018年湖北省臭氧特征及其高值与气象要素关系研究
EOF/SVD Based Characteristics of Ozone in Hubei Province in 2018 and the Relationship Between Its High Values and Meteorological Factors
投稿时间:2019-08-30  修订日期:2019-11-25
DOI:10.19316/j.issn.1002-6002.2020.02.11
中文关键词:  湖北  臭氧  气象  经验正交函数  奇异值分解
英文关键词:Hubei Province  ozone  meteorology  EOF  SVD
基金项目:国家重点研发计划项目(2017YFC0212600,2016YFC0200900);湖北省科技厅技术创新专项重大项目(2017ACA089);湖北省环保厅环保科研项目(2016HB03,2016HB04,2017HB11)
作者单位
陈楠 湖北省环境监测中心站,湖北 武汉430072 
刘长焕 南京科略环境科技有限责任公司,江苏 南京210000 
许可 湖北省环境监测中心站,湖北 武汉430072 
祝波 湖北省环境监测中心站,湖北 武汉430072 
沈学勇 南京科略环境科技有限责任公司,江苏 南京210000 
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中文摘要:
      基于湖北省2018年4—10月臭氧、温度和相对湿度逐小时监测数据以及50 m风场逐小时再分析数据,采用 经验正交函数(EOF)和 奇异值分解(SVD)方法,分析了2018年湖北省臭氧特征及其高值与气象要素关系。结果表明:湖北省臭氧日最大8 h浓度距平呈现以武汉为正值中心、自鄂东向鄂西递减的主要空间分布型;15:00臭氧与温度呈现较好的正相关关系,以随州、襄阳及其周边最为明显;与14:00相对湿度呈现很好的负相关关系,以孝感、随州、荆门及其周边最为明显;襄阳西部和十堰北部地区15:00 50 m风场的纬向分量对本地臭氧高值有一定影响,武汉北部、黄冈北部以及孝感东部等地15:00 50 m风场的经向分量对本地臭氧高值影响较大。
英文摘要:
      Based on the ground observation dataset of the hourly O3,temperature and relative humidity,and the reanalysis data of hourly wind at 50 m in Hubei Province from April to October in 2018,the characteristics of ozone over Hubei Province and the relationship between its high values and meteorological factors are analyzed with EOF/SVD methods. The results show that the anomaly of maximum 8 h average concentration of ozone over Hubei Province shows the main spatial distribution pattern with Wuhan as the positive center and decreasing from eastern Hubei to western Hubei. Ozone at 3 pm shows a good positive correlation with the temperature at 3 pm,most obvious in Suizhou,Xiangyang and its surroundings,and shows a good negative correlation with the relative humidity at 2 pm,most obvious in Xiaogan,Suizhou,Jingmen and its surroundings. The latitudinal component of the 50 m wind at 3 pm in the western Xiangyang and the northern Shiyan has certain influence on the high value of local ozone. The meridional component of the 50 m wind at 3 pm in northern Wuhan,northern Huanggang and eastern Xiaogan has a great influence on the high value of local ozone.
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