This study examines the implications of recent updates to the High Resolution Transmission (HITRAN) database and the MT_CKD water vapor continuum model on infrared radiative transfer calculations and satellite remote sensing applications. Specifically, it assesses the impact of the latest versions of the HITRAN database (i.e. HITRAN2016 and HITRAN2020) and the MT_CKD WV continuum model (i.e. versions 3.2 and 4.1.1) on clear-sky infrared flux calculations and the simulation of satellite infrared channels, specifically those of the Geostationary Operational Environmental Satellite (GOES) Advanced Baseline Imager (ABI). The results indicate that updates to the MT_CKD model tend to reduce atmospheric opacity, while updates to the HITRAN database have the opposite effect. The most significant differences noted are attributed to updates in the MT_CKD, leading to an increase in upward flux of 0.13 for the TRO and a decrease in downward flux of 0.28 for the MLS profile. However, these impacts are not uniform across the spectrum, atmospheric height, or among different atmospheric profiles. Notably, changes in the WV continuum model have significant effects in the far-infrared region. The updates in HITRAN exhibit pronounced differences associated with changes in the spectroscopic parameters of , and . The results of GOES’ ABI channels indicate that changes in HITRAN lead to an average brightness temperature decrease of 0.3 K for channel 12, which exceeds the channel’s sensitivity. This research underscores the importance of continuous updates and evaluations of spectroscopic databases and radiative transfer models to improve the accuracy of atmospheric remote sensing data.

中文翻译：

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HITRAN和水汽连续体模型的变化对红外辐射传输计算和遥感应用的影响


本研究探讨了高分辨率传输 (HITRAN) 数据库和 MT_CKD 水蒸气连续体模型最近更新对红外辐射传输计算和卫星遥感应用的影响。具体来说，它评估了最新版本的HITRAN数据库（即HITRAN2016和HITRAN2020）和MT_CKD WV连续体模型（即版本3.2和4.1.1）对晴空红外通量计算和卫星红外通道模拟的影响，特别是对地静止运行环境卫星（GOES）高级基线成像仪（ABI）的那些。结果表明，MT_CKD 模型的更新往往会降低大气不透明度，而 HITRAN 数据库的更新则具有相反的效果。最显着的差异归因于 MT_CKD 的更新，导致 TRO 的向上通量增加 0.13，MLS 剖面的向下通量减少 0.28。然而，这些影响在整个光谱、大气高度或不同大气剖面之间并不均匀。值得注意的是，WV 连续谱模型的变化对远红外区域有显着影响。 HITRAN 中的更新表现出与 、 和 的光谱参数变化相关的显着差异。 GOES ABI 通道的结果表明，HITRAN 的变化导致通道 12 的平均亮度温度降低了 0.3 K，这超出了通道的灵敏度。这项研究强调了持续更新和评估光谱数据库和辐射传输模型对于提高大气遥感数据准确性的重要性。