Abstract—

An original method is suggested for solving the inverse problem of hyperspectral satellite sounding of the atmosphere for retrieving the HDO/H₂O ratio vertical profile in the atmosphere with simultaneous inversion of thermal and near-IR spectra. A computational experiment was performed to retrieve the vertical profile of the relative content of the HDO isotopologue in atmospheric water vapor from high-resolution spectra simulated with parameters of the TANSO-FTS spectrometer onboard the GOSAT-2 satellite. The inverse problem was solved by the optimal estimation method with simultaneous inversion of thermal and near-IR spectra. The output data of the isotopic version of the ECHAM6-wiso atmospheric general circulation model were used as an a priori statistical set of water vapor isotopologue vertical profiles.

中文翻译：

---

从热和近红外范围内同时测量的卫星光谱中提取大气中HDO / H 2 O比垂直剖面的方法

摘要—

提出了一种解决大气高光谱卫星探测反问题的原始方法，该方法可同时获取大气中的HDO / H ₂ O比垂直分布，同时反演热光谱和近红外光谱。进行了计算实验，以使用GOSAT-2机载TANSO-FTS光谱仪的参数模拟的高分辨率光谱，检索大气水蒸气中HDO同位素的相对含量的垂直分布卫星。通过同时估计热和近红外光谱的最佳估计方法解决了反问题。同位素版本的ECHAM6-wiso大气总循环模型的输出数据被用作水蒸气同位素同位素垂直剖面的先验统计集。