生态与农村环境学报 ›› 2016, Vol. 32 ›› Issue (2): 338-341.doi: 10.11934/j.issn.1673-4831.2016.02.026

• 研究方法 • 上一篇    下一篇

能见度反演PM2.5质量浓度方法的对比分析

崔蕾1, 倪长健1, 孙欢欢1, 刘昆2, 张研3   

  1. 1. 成都信息工程学院大气科学学院/高原大气与环境四川省重点实验室, 四川成都 610225;
    2. 中国人民解放军 96111部队, 陕西渭南 715400;
    3. 中国人民解放军 95596部队, 陕西西安 710300
  • 收稿日期:2015-05-13 出版日期:2016-03-25 发布日期:2016-04-01
  • 作者简介:崔蕾(1992-),女,贵州贵阳人,硕士生,研究方向为大气物理与大气环境。E-mail:cccuuuiiillleeeiii@163.com
  • 基金资助:

    四川省教育厅项目(2014Z155);四川省教育厅重点项目(15ZA0179)

Comparison Analysis of the Method of Using Visibility to Retrieve Concentration of PM2.5

CUI Lei1, NI Chang-jian1, SUN Huan-huan1, LIU Kun2, ZHANG Yan3   

  1. 1. College of Atmospheric Sciences/Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Chengdu University of Information Technology, Chengdu 610225, China;
    2. Chinese People's Liberation Army 96111 Armed Forces, Weinan 715400, China;
    3. Chinese People's Liberation Army 95596 Armed Forces, Xi'an 710300, China
  • Received:2015-05-13 Online:2016-03-25 Published:2016-04-01

摘要:

着眼于能见度对细颗粒物反演的准确表征,利用2013年6月1日-2014年2月28日成都市人民南路四段逐时PM2.5质量浓度以及大气能见度的监测数据,对比研究了基于能见度推算PM2.5质量浓度的直接与间接方法。前者利用幂函数直接构建能见度与PM2.5质量浓度的函数关系;后者则通过能见度对消光系数的求取,进一步以线性函数反演PM2.5质量浓度。分析结果表明:(1)2种方法均能较好地反演PM2.5质量浓度,反演结果与地面监测数据具有一致的统计特征;(2)相比基于能见度反演PM2.5质量浓度的直接方法,间接方法物理意义更为清晰,同时反演结果也更优。

关键词: 成都, PM2.5, 消光系数, 能见度, 反演

Abstract:

To characterize precisely the usage of visibility to retrieve concentration of fine particles, a direct method and an indirect method were used to reckon PM2.5 mass concentration based on visibility in a comparative study with the hourly monitoring data of PM2.5 mass concentration and atmospheric visibility at Section 4 of South People Road of Chengdu during the period from June 1, 2013 to Feb. 28, 2014 cited as subject. The former used power functions to directly develop a functional relationship between visibility and PM2.5 mass concentration, while the latter first worked out extinction coefficient by visibility and then used linear functions to retrieve PM2.5 mass concentration. Results show as follows:(1) Both methods can be used well to retrieve PM2.5 mass concentration and the retrieval matches the ground monitoring data quite well in statistic feature; (2) Compared to the direct method of using visibility to retrieve PM2.5 mass concentration, the indirect method is more explicit in physical significance and more accurate.

Key words: Cheng-du City, PM2.5, extinction coefficient, visibility, inversion

中图分类号: