| 敦煌地区气溶胶垂直分布的观测研究 |
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| 作者姓名： | 陈彬 石广玉 王宏 |
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| 作者单位： | 1. 中国科学院大气物理研究所云降水物理与强风暴重点实验室, 北京 100029;
2. 中国科学院大气成分与光学重点实验室, 合肥 230031;
3. 中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室, 北京 100029;
4. 中国气象科学研究院大气成分研究所, 北京 100081 |
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| 基金项目： | 科技部国际科技合作与交流专项（2013DFG22820）、中国科学院大气成分与光学重点实验室开放课题、国家自然科学基金重点项目（41130104）和科技部国际科技合作与交流专项（2010DFA22770）资助 |
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| 摘 要： | 使用遥控飞机搭载的光学粒子计数器与其他探空传感器，进行了近30天的连续观测，获得敦煌地面到约1000m高度气溶胶的分粒径级的数混合比，以及温度、相对湿度等参数的垂直分布数据.数据表明，近地层气溶胶在夜间的对流混合是影响其日间垂直分布变化的主要因素.细粒子（0.3μm1.0μm）则是夏季比春季低.粒径在2.0μm
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| 关 键 词： | 气溶胶 垂直 混合比 敦煌 |
| 收稿时间： | 2013-07-22 |
| 修稿时间： | 2013-11-06 |
Vertical variations of aerosols over Dunhuang based on observations using remote-controlled plane |
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| Authors: | CHEN Bin SHI Guangyu WANG Hong |
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| Institution: | 1. LACS, Institute of Atmospheric Physics, China Academy of Sciences, Beijing 100029, China;
2. Key Laboratory of Atmospheric Composition and Optical Radiation, China Academy of Sciences, Hefei 230031, China;
3. LASG, Institute of Atmospheric Physics, China Academy of Sciences, Beijing 100029, China;
4. Institute of Atmospheric Composition, Chinise Academy of Meteorological Sciences, Beijing 100081, China |
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| Abstract: | Vertical profiles of aerosol data and meteorological factor at Dunhunang in China were obtained by using observation instruments loaded in a remote-controlled airplane. The observations suggest that convective mixing of aerosols accumulated in the vicinity of the ground at nighttime is the main factor of diurnal variation of aerosol vertical distribution. Monthly-mean vertical distributions suggest that concentrations of fine particles and water vapor are higher in summer than in spring while those of coarse particles are lower in spring than in summer. During dust storms, number mixing ratio of coarse particles increased, while that of fine particles slightly decreased. The size distributions had two peaks. In the retreat periods of dust storms, the decreasing rates and speeds of number mixing ratios for the coarse and fine particles were different. These differences imply the different origins of the dust storms. |
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| Keywords: | aerosol vertical mixing ratio Dunhuang |
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