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16 June 2003 D/H latitudinal distribution in the atmosphere retrieved from IMG spectra
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Abstract
Methodology of the Deuterium/Hydrogen (D/H) ratio retrieval based on high-resolution infrared spectra observed by space sensors has been described. Simulated atmospheric radiance in the spectral range of 650-2500 cm-1 for the case of nadir observation from satellite with resolution of about 0.1 cm-1 is investigated aiming to find appropriate signals of isotopes of greenhouse gases. Signals corresponding to an atmospheric water vapor isotopomer, HDO, were selected. These signals were identified in Interferometric Monitor for Greenhouse gases (IMG) spectra observed during Advanced Earth Observing Satellite (ADEOS) mission. The developed method includes the following stages: temperature profile retrieval with aerosol correction, H2O and HDO profiles and their column amounts retrieval, and D/H ratio determination. The method has been applied to the analysis of the IMG/ADEOS data identified as to be observed under clear sky conditions over an ocean area between 80S-80N and 130-170W to determining D/H column amount ratios. The latitudinal distribution of D/H ratio for a short period in December 1996 was obtained.
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Vyacheslav I. Zakharov, Rouichi Imasu, and Konstantin G. Gribanov "D/H latitudinal distribution in the atmosphere retrieved from IMG spectra", Proc. SPIE 4897, Multispectral and Hyperspectral Remote Sensing Instruments and Applications, (16 June 2003); https://doi.org/10.1117/12.467724
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