沈阳春夏季大气冰核浓度的观测研究  

An Observational Study of Atmospheric Ice Nuclei Concentration in Spring and Summer in Shenyang

作　　者：周德平[1] 洪也[1] 王扬锋[1] 刘宁微[1] 张云海[1] 李丽光[1] 

机构地区：[1]中国气象局沈阳大气环境研究所,沈阳110016

出　　处：《气候与环境研究》2012年第6期719-726,共8页Climatic and Environmental Research

基　　金：国家自然科学基金40975084

摘　　要：为了解沈阳地区大气冰核浓度的时空分布状况,2010年起开始对沈阳地区的大气冰核浓度分布进行观测和研究。地面采用Bigg型混合云室法和滤膜法进行冰核气溶胶的采样测量,高空利用辽宁省人工影响天气办公室租用的人工增雨飞机进行滤膜法采样。采样滤膜的处理都是统一在活化温度-15℃及冰面过饱和度20%、水面过饱和度3%的湿度条件下进行的。根据取得的部分观测资料,给出了沈阳春夏季大气冰核的浓度及冰核温度谱分布参数,分析了冰核浓度在3～6月各月以及在不同天气状况下的分布特征,初步给出了大气冰核浓度的尺度谱分布及其随高度的变化。Observation and research on the distribution of atmospheric ice nuclei （IN） concentration was started in 2010, in order to understand the temporal and spatial distributions of IN concentrations in Shenyang area. Ground measurement was made by Bigg mixing chamber and sampling of IN aerosols was done by membrane filter method. Airborne IN measurements were made on the artificial precipitation aeroplane Y-12 which being lended by Wheather Modification Office of Liaoning Province during April-September 2011. Sampling membrane filter processing conditions is unified in the activation temperature about --15 ~C and from ice saturation to 3% water supersaturation. According to some of the observation data, IN concentration and its temperature distribution parameters in spring and summer in Shenyang is given. The monthly variation of IN concentrations from March-June and the distribution characteristics in different weather conditions are analyzed. And the changes of IN concentration with particle size and height are given primipa- rously.

关 键 词：沈阳 大气冰核 Bigg 型混合云室 滤膜采样 

分 类 号：P41[天文地球—大气科学及气象学]