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Intercomparison of brightness temperature measurements from SMAP and SMOS radiometers

机译：SMAP和SMOS辐射计进行亮度温度测量的比对

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摘要

SMAP and SMOS have been successfully providing L-band brightness temperature (Tb) since 2015 and 2011, respectively [1, 2]. Since both missions provide Low Earth Orbit observation at the same frequency, inter-calibration of brightness temperatures measured from these two missions leading to a consistent Tb record is critical in order to have consistent and reliable science datasets. For a radiometer, stability testing and drift monitoring of measured brightness temperature are often performed by comparing measured Tb with estimated Tb using in-situ temperature measurement and/or higher frequency microwave observations. Therefore having one additional reference Tb measured by another radiometer will help characterize and calibrate a radiometer with higher accuracy and benefit both missions.
机译：自2015年和2011年以来，SMAP和SMOS分别已成功提供L波段亮度温度（Tb）[1、2]。由于两个任务都以相同的频率提供近地轨道观测，因此从这两个任务测得的亮度温度相互校准以产生一致的Tb记录对于拥有一致且可靠的科学数据集至关重要。对于辐射计，经常通过使用现场温度测量和/或高频微波观测将测得的Tb与估算的Tb进行比较，来对测得的亮度温度进行稳定性测试和漂移监控。因此，用另一台辐射计测量一个额外的参考Tb将有助于以更高的精度表征和校准辐射计，并有益于两个任务。

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