敦煌地区气溶胶垂直分布的观测研究

doi:10.7523/j.issn.2095-6134.2014.03.020

中国科学院大学学报 ›› 2014, Vol. 31 ›› Issue (3): 431-438.DOI: 10.7523/j.issn.2095-6134.2014.03.020

• 大气颗粒物与空气污染专刊 • 上一篇下一篇

敦煌地区气溶胶垂直分布的观测研究

陈彬^1,2, 石广玉³, 王宏⁴

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

收稿日期:2013-07-22 修回日期:2013-11-06 发布日期:2014-05-15
通讯作者: 陈彬，E-mail：chen_bin@mail.iap.ac.cn
基金资助:
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

Vertical variations of aerosols over Dunhuang based on observations using remote-controlled plane

CHEN Bin^1,2, SHI Guangyu³, WANG Hong⁴

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

Received:2013-07-22 Revised:2013-11-06 Published:2014-05-15

摘要/Abstract

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（0.3μm<d<1.0μm，d为空气动力学直径）的数混合比的月平均夏季比春季高，而粗粒子（d>1.0μm）则是夏季比春季低.粒径在2.0μm<d<5.0μm间的粒子在2002年整个春季都占相当比例.沙尘暴期间，粗粒子的数混合比上升，同时细粒子的数混合比轻度下降，粒子尺度谱上在0.5μm<d<1.0μm和2.0μm<d<5.0μm范围都有峰值.沙尘暴消退期间，不同粒径粒子的数混合比的消退率和消退速度各有不同，这很可能意味着沙尘起源的差异.

关键词: 气溶胶, 垂直, 混合比, 敦煌

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.

Key words: aerosol, vertical, mixing ratio, Dunhuang

中图分类号:

陈彬, 石广玉, 王宏. 敦煌地区气溶胶垂直分布的观测研究[J]. 中国科学院大学学报, 2014, 31(3): 431-438.

CHEN Bin, SHI Guangyu, WANG Hong. Vertical variations of aerosols over Dunhuang based on observations using remote-controlled plane[J]. , 2014, 31(3): 431-438.

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敦煌地区气溶胶垂直分布的观测研究

Vertical variations of aerosols over Dunhuang based on observations using remote-controlled plane

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