Limb Correction of MODIS and VIIRS Infrared Channels for the Improved Interpretation of RGB Composites
Limb Correction of MODIS and VIIRS Infrared Channels for the Improved Interpretation of RGB Composites
复制标题
MODIS 和 VIIRS 红外通道的临边校正可改进 RGB 复合材料的解释
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
G. Jedlovec
中科院分区：
文献类型：
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作者：
N. Elmer;E. Berndt;G. Jedlovec
摘要红绿蓝（RGB）合成图像将来自多个光谱通道的信息组合到一幅图像中，以帮助进行大气过程的业务分析。然而，红外通道受到临边效应的不利影响，临边效应是卫星和地球之间的吸收大气的光程长度随着观察天顶角的增加而增加的结果。这项研究开发了一种技术，以快速校正在晴朗和多云地区使用纬度和季节性变化的肢体校正系数的实时应用。这些边缘校正系数考虑了光程长度的增加，以便产生边缘校正的RGB合成。通过使用Aqua中分辨率成像光谱仪（MODIS）和Suomi-国家极轨伙伴关系（SNPP）可见光红外成像辐射计Sui对气团和尘埃RGB合成物进行的多个案例研究，证明了肢体校正RGB合成物的改进功能。
AbstractRed–green–blue (RGB) composite imagery combines information from several spectral channels into one image to aid in the operational analysis of atmospheric processes. However, infrared channels are adversely affected by the limb effect, the result of an increase in optical pathlength of the absorbing atmosphere between the satellite and the earth as viewing zenith angle increases. This study develops a technique to quickly correct for limb effects in both clear and cloudy regions using latitudinally and seasonally varying limb correction coefficients for real-time applications. These limb correction coefficients account for the increase in optical pathlength in order to produce limb-corrected RGB composites. The improved functionality of limb-corrected RGB composites is demonstrated by multiple case studies of Air Mass and Dust RGB composites using Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) and Suomi–National Polar-Orbiting Partnership (SNPP) Visible Infrared Imaging Radiometer Sui...