庐山降水化学垂直分布的初步研究  

PRELIMINARY STUDY OF VERTICAL DISTRIBUTION OF PRECIPITATION CHEMISTRY IN LUSHAN MOUNTAIN

作　　者：丁国安 纪湘明 房秀梅[1] 符基萌 吴凡 俞香仁 苏维瀚[2] 宋文质[2] 李嶶 

机构地区：[1]国家气象局气象科学研究院 [2]中国科学院生态环境研究中心

出　　处：《应用气象学报》1990年第4期360-368,共9页Journal of Applied Meteorological Science

摘　　要：庐山大气降水中离子浓度随高度降低而增高,但 pH 值减小。锋面过境降水与变性高压西南侧降水中各种离子浓度以及山下与山上测点离子浓度比有明显差异,这可能与气流来向和污染源的分布有关。气溶胶对降水中 SO₄⁼贡献为91.0%。气流不同来向影响气溶胶浓度。不同天气过程、不同离子的云下冲刷过程是不同的。The analysis results show that the ion concentration in the rainwater increased with reducingof sampling altitude in Lushan Mountain,but the pH value was opposite trend with altitude.Also,the ion concentration of the precipitation in the rear of the high is different from that of thefrontal precipitation,and the ratio of the concentration at the root of the mountain to the concen-tration at the top of the mountain is also different between the two precipiation systems abovementioned.It would be related to the direction of air flow and the distribution of the pollutionsources.The contribution of aerosol to SO_4~= in precipitation was 91.0%.The direction of air flowimpacted on the concentration of aerosol.The washout process for different weather and ion con-ditions also was not similar.

关 键 词：降水化学 垂直分布 锋面过境 大气降水 数浓度 离子浓度 冲刷过程 天气过程 观音桥 地面图 

分 类 号：P4[天文地球—大气科学及气象学]