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基于环境一号卫星的四川盆地气溶胶光学厚度精细化反演
引用本文:张洋,刘志红,叶芝祥,李梅芳.基于环境一号卫星的四川盆地气溶胶光学厚度精细化反演[J].四川环境,2014(4):29-35.
作者姓名:张洋  刘志红  叶芝祥  李梅芳
作者单位:成都信息工程学院资源环境学院;
基金项目:四川省环境保护科学研究院四川气溶胶多源遥感反演与时空分析项目(2013HBZX03)
摘    要:四川盆地为中国灰霾形势较为严重的区域之一,对四川盆地大气灰霾的监测具有十分重要的意义。利用环境一号卫星数据,对能表征大气污染程度的气溶胶光学厚度进行了反演。提出了用EVI植被指数判定暗像元精细化反演气溶胶光学厚度的方法,该方法能较好地去除部分大气影响,气溶胶光学厚度反演结果与CE318的气溶胶光学厚度结果相关性较高,误差较小,具有较高的精度,反演结果满足精细化要求。反演结果表明,四川盆地内有德阳、成都、眉山和乐山4个气溶胶光学厚度高值区,该高值区呈带状分布且与四川盆地的地形密切相关。

关 键 词:四川盆地  环境卫星  光学厚度  精细化反演

Refined Inversion of Aerosol Optical Depth of Sichuan Basin Based on HJ-1 Satellite Data
ZHANG Yang,LIU Zhi-hong,YE Zhi-xiang,LI Mei-fang.Refined Inversion of Aerosol Optical Depth of Sichuan Basin Based on HJ-1 Satellite Data[J].Sichuan Environment,2014(4):29-35.
Authors:ZHANG Yang  LIU Zhi-hong  YE Zhi-xiang  LI Mei-fang
Institution:(Chengdu University of Information Technology, Chengdu 610225, China)
Abstract:Sichuan Basin is one of the serious haze regions in China. It has great significance to monitor the atmospheric haze in Sichuan Basin. Based on the data of HJ - 1 satellite, this study inversed the Aerosol Optical Depth ( AOD), which could represent the level of air pollution, proposed a method that used the EVI vegetation index to determine dark pixel to inverse AOD. This method can eliminate part of the atmospheric influence. The correlation between inversed AOD result and the result of CE318 is high, with small error and high precision. The inversion result can meet the requirement of refinement. The results showed that Sichuan Basin has four high AOD regions which are Deyang, Chengdu, Meishan and Leshan. These regions are zonal distributed and closely related to the topography of Sichuan Basin.
Keywords:Sichuan basin  HJ satellite  aerosol optical depth (AOD)  refined inversion
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