| 利用多通道MODIS遥感资料反演沙尘气溶胶尺度分布的个例试验 |
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| 引用本文： | 冯建东,陈长和,陈勇航,张武,黄艇,张镭,郭铌.利用多通道MODIS遥感资料反演沙尘气溶胶尺度分布的个例试验[J].高原气象,2006,25(2):242-248. |
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| 作者姓名： | 冯建东 陈长和 陈勇航 张武 黄艇 张镭 郭铌 |
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| 作者单位： | 兰州大学,大气科学学院,甘肃,兰州,730000;四川省人工影响天气办公室,四川,成都,610072;兰州大学,大气科学学院,甘肃,兰州,730000;甘肃省气象局卫星遥感中心,甘肃,兰州,730020 |
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| 基金项目： | 国家自然科学基金项目(40275039)资助 |
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| 摘 要： | 为了利用水面进行大气气溶胶粒子尺度分布的反演,需要水体光谱反射率资料;本文利用水库上空MODIS观测的表观反射率资料来订正出实际的水体光谱反射率。假设在干旱的春季水库水面反射率变化不大,用订正的水库水面光谱反射率平均值进行大气气溶胶尺度分布的反演。从两天个例研究来看,利用多通道MODIS资料可以反演出大气气溶胶粒子的尺度变化。结合天气分析2002年4月11日水库上空气溶胶光学厚度增加、粒子变粗,是由于上游区域的沙尘在高空强西北气流引导下到达本地区。
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| 关 键 词： | 气溶胶粒子尺度分布 沙尘 水体光谱反射率 反演 MODIS |
| 文章编号： | 1000-0534（2006）02-0242-07 |
| 收稿时间： | 2004-05-05 |
| 修稿时间： | 2004-05-052004-08-15 |
The Experimental Study of Retrieving Dust Aerosol Size Distribution Using Multichannel MODIS Remote Sensing Data |
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| FENG Jian-dong,CHEN Chang-he,CHEN Yong-hang,ZHANG Wu,HUANG Ting,ZHANG Lei,GUO Ni.The Experimental Study of Retrieving Dust Aerosol Size Distribution Using Multichannel MODIS Remote Sensing Data[J].Plateau Meteorology,2006,25(2):242-248. |
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| Authors: | FENG Jian-dong CHEN Chang-he CHEN Yong-hang ZHANG Wu HUANG Ting ZHANG Lei GUO Ni |
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| Institution: | 1. College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China ; 2. Center of Remote Sensing, Weather Bureau o f Gansu Province, Lanzhou 730020, China ; 3. Weather Modification Office of Sichuan Province, Chengdu 610072, China |
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| Abstract: | In order to retrieve aerosol particle size distribution over land,the spectral reflectance information of the surface water is needed.In this paper,the correction for the water spectral reflectanceof the LiujiaxiaReservoiris conducted by the 6Smodelwith the MODIS data,on clear days under the conditions of low concentrationsof aerosol.Supposing that the reservoir water spectral reflectance was less changing during the dry spring,the average results of the correction ofwater surface spectral reflectance of the reservoirwere used to retrieve the atmospheric aerosol particle size distribution.The atmospheric aerosol particle size distribution can be retrieved using the multichannel MODIS data from two days as example.The obvious reason for the explanation of aerosol larger sizeon 11 April 2002is the dust transfer from the upwind areas,northwest of the study regions,by strong airflow,based on the analysis of the weather processes. |
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| Keywords: | Aerosol particle size distribution Dust Reservoir water surface spectral reflectance Retrieval MODIS |
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