Regional and seasonal variations of surface reflectance from satellite observations at 0.6 micron
Regional and seasonal variations of surface reflectance from satellite observations at 0.6 micron
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0.6 微米卫星观测的表面反射率的区域和季节变化
DOI：
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发表时间：
1987
期刊：
影响因子：
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通讯作者：
W. Rossow
中科院分区：
文献类型：
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作者：
E. Matthews;W. Rossow
摘要本文介绍了由NOAA-5扫描辐射计观测资料得到的全球季节性可见光地表反射率图系列。对从卫星数据中分离晴空观测数据的方法进行了评价，并介绍了大气影响（瑞利散射和臭氧吸收）的程度。初步分析的数字植被和土壤数据库，结合卫星观测进行了分析，进行了讨论。区域和全球的反射率均匀性的土地覆盖类型，和雪增亮的类型，提出。结果表明，本研究中使用的隔离晴空辐射的统计方法获得了足够准确的值，每个位置，使有意义的测量表面反射率的季节，空间和生态系统的变化。
Abstract A global series of seasonal visible surface reflectance maps derived from NOAA-5 Scanning Radiometer observations is presented. Methods for isolating clear-sky observations from satellite data are evaluated and the magnitude of atmospheric effects (Rayleigh scattering and ozone absorption) are presented. A preliminary analysis of digital vegetation and soils data bases which were analyzed in conjunction with the satellite observations, is discussed. Regional and global reflectance homogeneity of land-cover types, and snow brightening for types, are presented. Results demonstrate that the statistical approach for isolating clear-sky radiances used in this study obtains accurate enough values for each location to allow meaningful measurements of seasonal, spatial and ecosystem variations in surface reflectance.