Vol. 35, issue 12, article # 5

Abstract:

In with paper we demonstrate the application of original method for solving the inverse problem of hyperspectral satellite sensing to retrieval of the vertical profile of HDO/H₂O ratio in the Earth's atmosphere with the simultaneous use of thermal and near-IR spectra is described. This method is used to retrieve relative abundance of HDO isotopologue (dD) in atmospheric water vapor from measurements of TANSO-FTS IR spectrometer onboard GOSAT-2 satellite for the first time. Retrieved dD-values are compared with data obtained at ground-based TCCON measurement station in Karlsruhe, Germany. The simultaneous use of satellite spectra of outgoing atmospheric radiation in the thermal range and reflected solar radiation in the near-IR shows a higher correlation between monthly average dD satellite values of and ground-based data.

Keywords:

remote sensing, inverse problem, water vapor isotopologues, GOSAT-2

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