主办单位：中国气象局沈阳大气环境研究所
国际刊号：ISSN 1673-503X
国内刊号：CN 21-1531/P
气象与环境学报

气象与环境学报 ›› 2011, Vol. 27 ›› Issue (6): 7-13.doi:

• 论文 • 上一篇    下一篇

丹东地区大气能见度变化及其主要影响因子分析

赵胡笳  马雁军   

  1. 中国气象局沈阳大气环境研究所，辽宁 沈阳 110016
  • 出版日期:2011-12-30 发布日期:2011-12-30

Variation characteristics of visibility and its main influencing factors in Dandong, Liaoning province

ZHAO Hu-jia  MA Yan-jun   

  1. Institute of Atmospheric Environment, China Meteorological Administration, Shenyang 110016, China
  • Online:2011-12-30 Published:2011-12-30

PDF (PC)

688

被引次数

22

摘要： 利用2007年6月至2009年11月丹东市区器测能见度资料和人工观测能见度资料，分析目测能见度与器测能见度的关系，探讨不同的季节中，PM10、PM2.5、PM1.0颗粒物浓度对大气能见度的影响，研究降水强度与PM的湿清除效率关系。结果表明: 在低能见度情况下，目测能见度和器测能见度的比值相对较小；能见度较差时PM10粒子比重增大，PM1.0/PM10、PM2.5/PM10比值与月平均风速呈负相关；天气现象天数较多的月份，其对应的月均能见度较小；PM日均质量浓度的改变量以及降雨量对PM的湿清除效率与降水强度相关，器测目测能见度平均值随着降水强度的增加而降低。

关键词: 能见度, 器测, 目测, PM10, PM2.5, PM1.0, 降水强度

Abstract: Based on the visibility data from the instrument observation and manual observation from June 2007 to November 2009 in Dandong, relationship between these two records was analyzed. The effects of particle concentrations such as PM10, PM2.5 and PM1.0 in the different seasons on the visibility were discussed. The relationship between precipitation intensity and wet removal efficiency of PM was analyzed. The results indicate that the visibility ratio between visual measurement and instrumental measurement is small under the low visibility condition. The proportion of PM10 is larger when visibility is poor, and the mean monthly wind speed is in the negative correlations with the values of PM1.0/PM10 and PM2.5/PM10. The more the weather phenomena are in a month, the poorer the relatively mean monthly visibility is. The change of mean daily mass concentration of PM and the wet removal efficiency of PM to precipitation are related to precipitation intensity. The average visibility values from both visual measurement and instrumental measurement decrease with the increasing of precipitation intensity.