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Calibration of EOS multispectral imaging sensors and solar irradiance variability

机译:EOS多光谱成像传感器的校准和太阳辐照度变化

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Abstract: Earth observation system (Eos) optical multispectral imaging sensors provide images of the earth at various spectral and spatial resolutions, in the visible (VIS) and infrared (IR) regions of the solar spectrum. Accurate knowledge of extraterrestrial solar spectral irradiance and its variations with time are needed to trace sensor calibration in space, and for the development of terrestrial atmospheric models needed in data validation. A brief review of the extraterrestrial solar VIS/IR spectral irradiance available in the literature is included, and the need to develop an extraterrestrial solar spectral irradiance for the Eos studies is pointed out. The solar calibration of the Earth Radiation Budget Experiment (ERBE) earth-viewing sensors is discussed. Observed variations in the solar constant (solar irradiance, at the mean sun-earth distance of one astronomical unit, integrated over all wavelengths), and solar spectral irradiance with solar activity and its implications for Eos studies are also discussed.!
机译:摘要:地球观测系统(Eos)光学多光谱成像传感器可在太阳光谱的可见(VIS)和红外(IR)区域提供各种光谱和空间分辨率的地球图像。需要精确了解地外太阳光谱辐照度及其随时间的变化,以跟踪空间中的传感器校准,以及开发数据验证所需的地面大气模型。包括对文献中可获得的地外太阳VIS / IR光谱辐照度的简要回顾,并指出有必要为Eos研究开发地外太阳光谱辐照度。讨论了地球辐射预算实验(ERBE)地球观测传感器的太阳标定。还讨论了太阳常数的观测变化(太阳辐照度,在一个天文单位的平均日地距离上,在所有波长上积分),以及太阳光谱辐照度与太阳活动及其对Eos研究的意义!

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