摘要
气溶胶是指悬浮在大气中的各种半径为0.01～20μm的固体和液体粒子,它们对光的影响表现为散射和吸收,是致使大气中光波传输时能量损失的原因之一。介绍了两种测量大气气溶胶光散射特性的仪器,前向散射能见度仪和三波长积分浊度计,通过在合肥地区系统的测量,获得了该地区大气能见度和气溶胶消光的统计特征,为有关光学工程试验提供了科学依据。对比分析了两种设备测量结果,为提高探测精度,将两种仪器的测量结果放在一起进行了研究,获得了满足特殊试验要求的第一手数据,夏秋两季的能见度较高时,平均能见度的最大值超过10000m。实验结果对于大气环境评价和辐射气候效应及有关光学试验有重要的参考价值。
Aerosol are many solid and liquid particles with the radii from 0.01 to 20 μm suspending in atmosphere. They will scatter and absorb the light which is one of reasons of light energy losing in atmosphere. It is necessary to study the aerosol extinction characteristics. Two instruments for measure of atmospheric aerosol extinction coefficients characteristics were introduced,one is forward scatter visibility sensor,and the other is three-wavelength integrating nephelometer. The contrast and analysis results of the two instruments were given and combined to increase the precision of detection. Then atmospheric visibility and aerosol extinction characteristics were obtained through the system measurement. The maximum value of the visibility was exceed 10 000 m and it was very high in summer and autumn in Hefei area. And the differences of visibility value in night were not obvious in the different seasons.The experimental results will be of great reference value to studying the atmospheric environmental assessment,aerosol radiation-climate effect and related optical experiment.
出处
《红外与激光工程》
EI
CSCD
北大核心
2008年第4期663-666,共4页
Infrared and Laser Engineering
基金
国家863计划(激光和航天领域某专题)
南京大学人才引进启动基金(020722410111)
国家863计划(大气光学重点实验室科学基金)(2008-01)
关键词
大气光学
气溶胶光学特性
能见度仪
积分浊度计
Atmospheric optics,Aerosol optical characteristics,Visibility sensor,Integrating nephelometer
