| MODIS数据反演地表温度的传感器视角校正研究 |
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| 引用本文： | 高懋芳,覃志豪,高明文,张彩枝,色布力马.MODIS数据反演地表温度的传感器视角校正研究[J].遥感技术与应用,2007,22(3):433-437. |
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| 作者姓名： | 高懋芳 覃志豪 高明文 张彩枝 色布力马 |
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| 作者单位： | (1.中国农业科学院农业资源与农业区划研究所,北京 100081;2.南京大学国际地球系统科学研究所,江苏南京 210093;
3.内蒙古阿鲁科尔沁旗草原工作站,内蒙古阿鲁科尔沁 025550) |
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| 基金项目： | 国家自然科学基金;科技部社会公益研究项目;MODIS数据产品开发、验证与应用示范项目 |
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| 摘 要： | 提出了MODIS数据传感器视角的计算方法,并分析了视角的变化对大气透过率以及地表温度反演的影响。选取渤海地区一景影像进行实验研究,结果表明MODIS数据边缘的传感器视角可达55.02°,由此引起的大气透过率降低近0.086,引起的地表温度误差最高可达3.64℃。
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| 关 键 词： | MODIS 地表温度 视角校正 大气透过率 |
| 文章编号： | 1004-0323（2007）03-0433-05 |
| 收稿时间： | 2006-08-22 |
| 修稿时间： | 2006-08-222007-01-16 |
Calibration of View Angle for Retrieving Land Surface Temperature from the Moderate Resolution Imaging Spectroradiometer(MODIS) |
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| GAO Mao-fang,QIN Zhi-hao,GAO Ming-wen,ZHANG Cai-zhi,SEBU Li-ma.Calibration of View Angle for Retrieving Land Surface Temperature from the Moderate Resolution Imaging Spectroradiometer(MODIS)[J].Remote Sensing Technology and Application,2007,22(3):433-437. |
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| Authors: | GAO Mao-fang QIN Zhi-hao GAO Ming-wen ZHANG Cai-zhi SEBU Li-ma |
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| Affiliation: | (1.Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,;
Beijing100081,China; 2.International Institute for Earth System Science,Nanjing University,;
Nanjing210093China; 3.Grass Workstation,Alukerqin county,Inner Mongolia, 025500China) |
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| Abstract: | This paper proposed the calibration of view angle when retrieving land surface temperature using Moderate Resolution Imaging Spectroradiometer (MODIS) data. MODIS instrument provides high radiometric sensitivity in 36 spectral bands ranging in wavelength from 0.4μm to 14.4μm with resolution of 250 m, 500 m, and 1km at nadir. Two MODIS instruments integrated on Terra and Aqua provide global coverage every one to two days. These MODIS instruments offer a look at terrestrial, atmospheric, and
ocean phenomenology for a wide and diverse community of users throughout the world. The view angle can reach±55°with a 2 330 km swath at the EOS orbit of 705 km. The transmittance path will be great different with the view angle from 0～55°which will cause a big impact on the accuracy of land surface temperature retrieval. The impact of view angle to atmosphere transmittance and land surface temperature is discussed in detail. An example of bohai region indicate that the maximum view angle of MODIS data on the image edge can reach 55.02°, which can bring to the error of 0.086 for the atmosphere transmittance and 3.64℃for the land surface temperature. |
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| Keywords: | MODIS |
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