中文摘要：

利用2009年5—8月在华东地区高山——黄山顶取得的气溶胶和云微物理参数观测资料以及同期气溶胶离子成分数据，结合多种化学组分气溶胶绝热气块分档云模式，研究了黄山地区多化学组分气溶胶对云凝结核和云微物理特征的影响。气团轨迹和气溶胶离子成分的分析结果表明，3种气团影响着黄山地区气溶胶的化学组分，即北方大陆气团气溶胶富含CaCO3，局地污染气团气溶胶以可水溶性无机盐（（NH4）2SO4、NH4NO3）为主，而变性混合海洋性气团气溶胶中NaCI较多。数值模拟结果显示，在气溶胶谱一定时，不同天气形势下黄山气溶胶的化学组分的差异会对云微物理特征产生不同的影响。同一上升速度下实际多组分气溶胶模拟的云滴数浓度大于纯硫酸铵，主要体现在云滴谱第1个峰值3．3μm之前；气块上升速度低于0．7m／s时，含有较多不可水溶物质的混合气溶胶对云滴数浓度的影响较大；上升速度大于0．7m／s时，气块中可凝结水增多，海盐对云滴数浓度增加的效果更显著。多组分气溶胶模拟云滴谱较纯硫酸铵窄，其中，北方气团方案造成云滴谱变窄的程度高于混合气团方案；而模拟的云滴数目增多，造成云滴有效半径减小，云光学厚度和反照率增加，将会对暖云降水及辐射效应产生不同的影响。

英文摘要：

The aerosol components and cloud microphysical parameters were measured at a high-altitude background station on the summit of the Mr. Huang from May to August 2009, and were used as input to a multi-chemical-component （MCC） bin-resolved cloud parcel model to investigate the influence of MCC aerosols on the cloud condensation nuclei （CCN） and cloud microphysics. The results from the back trajectory cluster and aerosol ionic composition analysis show that there were three types of air masses that affected the chemical composition of the aerosol particles, including the northern continental, local polluted, and mixed transformation maritime air mass, with characteristic substance of CaCO3, soluble salts （（NH4）2 SO4, NH4 NOa）, as well as NaC1, respectively. The numerical simulation results show that the effects of aerosol chemical compositions on cloud microphysical processes varied with weather conditions for the same aerosol distribution. MCC aerosols led to higher cloud droplet number concentration （CDNC） than pure ammonium sulfate aerosols under the same updraft velocity, mainly reflected in more droplets with sizes less than 3.3 μm. It is also shown that inclusion of the insoluble component CaCO3 has more significant influence on the CDNC when the updraft velocity is lower than 0. 7 m/s; other- wise, NaC1 dominated the droplet activation process with the increasing condensable water. The MCC aerosols resulted in relatively narrow cloud droplet spectrum than pure ammonium sulfate aerosols, especially when the area is influenced by the northern continental air mass. In the latter case, MCC aerosols led to enhanced the cloud droplet number, cloud optical thickness and cloud albedo, and decreased the droplet effective radius, and therefore, may have different effects to warm precipitation and atmospheric radiation compared with other types of air masses.