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投稿时间：2009-01-17 修订日期：2009-11-21
投稿时间：2009-01-17 修订日期：2009-11-21
中文摘要: 气溶胶对城市环境质量的影响越来越受到人们的关注。利用2001—2007年MODIS卫星数据，借助6S辐射传输模式，采用目前较为成熟的暗像元方法，在分析MODIS红光、蓝光和近红外波段对气溶胶敏感性的基础上，反演福建三大城市群福州、厦门和泉州的气溶胶光学厚度，将反演结果与大气环境观测数据进行对比，并分析了三大城市群气溶胶光学厚度的时空分布与变化特征。结果表明：MODIS红光和蓝光波段均对气溶胶敏感，只是在不同季节表现出不同的敏感程度；遥感反演的气溶胶光学厚度与现场观测的
PM10数据相关系数为0.604；在时空分布上气溶胶光学厚度高值区与城区分布相一致，秋冬季气溶胶光学厚度明显大于其他季节。基于MODIS数据反演得到的福建三大城市群气溶胶光学厚度产品精度是可靠的，能客观反映该区域气溶胶光学厚度的时空分布与变化特征。
中文关键词: 遥感， 气溶胶光学厚度， 6S辐射传输模型， MODIS
Abstract:It has being more and more noticed by people that aerosol impact on city environment. On the basis of sensitivity test to the aerosol made for the planetary albedo of red, blue and near infrared channel of MODIS data, the aerosol optical depth over three cities, Fuzhou, Xiamen, and Quanzhou of Fujian Province is retrieved based on 6S model and dark target method by using MODIS data during 2001-2007, the precision of aerosol optical depth (AOD) retrieved from MODIS data is verified with the station observed data of air environment over Fuzhou urban during 2001-2007, the spatio temporal distribution and change characteristics of AOD over the three cities are analyzed. The results showed that the red and blue channel data of MODIS is sensitive to the AOD, although the sensitivity of different season is variational. The relationship index between AOD retrieved from MODIS and PM10 observed from station is 0.604. It is the same that distribution of high value area of AOD is consistent with the distribution of urban, and the value of AOD in autumn and winter seasons is higher than other seasons. The remote sensing retrieval of AOD over three cities of Fujian based on MODIS data is credible, and the retrieved AOD can truly describe the spatio temporal distribution and change characteristics over the study region.
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基金项目:福建省科技厅重点项目(2006Y0008)“MODIS卫星数据在福建生态环境与灾害监测中的应用研究”资助
| 作者 | 单位 |
| 张春桂 | 福建省气象科学研究所， 福州 350001 |
| 彭云峰 | 福建省气象台， 福州 350001 |
| 林晶 | 福建省气象科学研究所， 福州 350001 |
| 隋平 | 福建省气象科学研究所， 福州 350001 |
引用文本：
张春桂,彭云峰,林晶,隋平,2010.福建三大城市群气溶胶遥感监测及时空变化分析[J].气象,36(8):92-99.
ZHANG Chungui,PENG Yunfeng,LIN Jing,SUI Ping,2010.Remote Sensing Retrieval and Spatio Temporal Analysis of Aerosol over Three Cities of Fujian[J].Meteor Mon,36(8):92-99.
张春桂,彭云峰,林晶,隋平,2010.福建三大城市群气溶胶遥感监测及时空变化分析[J].气象,36(8):92-99.
ZHANG Chungui,PENG Yunfeng,LIN Jing,SUI Ping,2010.Remote Sensing Retrieval and Spatio Temporal Analysis of Aerosol over Three Cities of Fujian[J].Meteor Mon,36(8):92-99.