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北京市能见度下降与颗粒物污染的关系
引用本文:宋宇,唐孝炎,方晨,张远航,胡敏,曾立民,李成才,毛节泰,MICHAEL BERGIN.北京市能见度下降与颗粒物污染的关系[J].环境科学学报,2003,23(4):468-471.
作者姓名:宋宇  唐孝炎  方晨  张远航  胡敏  曾立民  李成才  毛节泰  MICHAEL BERGIN
作者单位:1. 北京大学环境科学中心,环境模拟与污染控制国家重点联合实验室,北京,100871
2. 北京大学地球物理系,北京,100871
3. 美国乔治亚理工学院,地球与大气科学系
基金项目:北京市"蓝天工程"--能见度影响因素和改善途径研究
摘    要:为了解北京市能见度下降的主要原因,在1999—2000年对各种污染物的消光系数和不同粒径太小颗粒物的质量浓度进行了观测.发现颗粒物的散射消光作用在北京市能见度下降中占有主要地位,其中与细粒子的关系更为密切.在不同季节运用不同的回归方程,利用细粒子质量浓度可以方便快捷地估算出大气能见度的近似值。

关 键 词:北京  能见度  颗粒物污染  消光系数  质量浓度  大气环境
文章编号:0253-2468(2003)04-0468-04
收稿时间:2001/6/11 0:00:00
修稿时间:2001年6月11日

Relationship between the visibility degradation and particle pollution in Beijing
SONG Yu,TANG Xiaoyan,FANG Chen,ZHANG Yuanhang,HU Min,ZENG Limin,LI Chengcai,MAO Jietai and MICHAEL BERGIN.Relationship between the visibility degradation and particle pollution in Beijing[J].Acta Scientiae Circumstantiae,2003,23(4):468-471.
Authors:SONG Yu  TANG Xiaoyan  FANG Chen  ZHANG Yuanhang  HU Min  ZENG Limin  LI Chengcai  MAO Jietai and MICHAEL BERGIN
Institution:State Key Joint Laboratory of Environmental Simulation and Pollution Control, Center for Environmental Sciences, Peking University, Beijing, 100871,State Key Joint Laboratory of Environmental Simulation and Pollution Control, Center for Environmental Sciences, Peking University, Beijing, 100871,State Key Joint Laboratory of Environmental Simulation and Pollution Control, Center for Environmental Sciences, Peking University, Beijing, 100871,State Key Joint Laboratory of Environmental Simulation and Pollution Control, Center for Environmental Sciences, Peking University, Beijing, 100871,State Key Joint Laboratory of Environmental Simulation and Pollution Control, Center for Environmental Sciences, Peking University, Beijing, 100871,State Key Joint Laboratory of Environmental Simulation and Pollution Control, Center for Environmental Sciences, Peking University, Beijing, 100871,Department of Geophysics, Peking University, Beijing, 100871,Department of Geophysics, Peking University, Beijing, 100871 and School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Georgia, 303320512U.S.A
Abstract:The experiments were conducted to investigate the relationship between the visibility degradation and the particle pollution in Beijing since 1999. The results showed that the light scattering extinction by particles is the main mechanism educing the visual range.A strong relationship was idetified between the fine particle mass concentration and the visual range,but a little lower for the coarse particle.The fine particle mass concentration can be used to reflect the visual range approximately by using different regression equations in different seasons.
Keywords:Visibility  fine particles(PM  2  5  )  light scattering extinction  Beijing
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