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Angular Corrections to Satellite Data for Estimating Earth Radiation Budget

机译：卫星数据的角度校正以估算地球辐射预算

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摘要

Monitoring the spatial and temporal variations of the earth's radiation budget (ERB) is es- sential for our understanding of climate change. Estimating the ERB using satellite data has proven to be a promising avenue for research in recent years. One of the key issues is to convert radiance that is observed at a specific direction to flux, an integrated quantity over all viewing directions. In may cases it is also desirable to convert the derived flux at one specific illu- mination angle to the daily average value that is integrated over all illumination angles. This article begins with reviewing several representative angular distribution models (ADMs) for converting top-of-atmosphere (TOA) radiance to flux in both shortwave and longwave spec- trum. In the surface radiation budget part, we primary focus on land surface albedo, including narrowband to broadband conversion, diurnal cycle and snow albedo. Research issues are also discussed.
机译：监测地球辐射预算（ERB）的时空变化对于我们了解气候变化至关重要。近年来，使用卫星数据估算ERB已被证明是有前途的研究途径。关键问题之一是将在特定方向上观察到的辐射转换为通量，即在所有观察方向上的积分。在可能的情况下，也需要将一个特定照明角度的导出通量转换为在所有照明角度上积分的日平均值。本文首先回顾了几种代表性的角度分布模型（ADM），这些模型将大气层（TOA）辐射转换为短波和长波光谱中的通量。在地表辐射预算部分，我们主要关注地表反照率，包括窄带到宽带的转换，日循环和雪反照率。还讨论了研究问题。

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