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18 December 2019 The feasibility of 13CO2 retrieval from IASI/METOP spectra
Ilya V. Zadvornykh, Konstantin G. Gribanov, Vyacheslav I. Zakharov, Ryoichi Imasu
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Proceedings Volume 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 112085F (2019) https://doi.org/10.1117/12.2540923
Event: XXV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2019, Novosibirsk, Russian Federation
Abstract
The relative 13С content in atmospheric carbon dioxide contains information about sources and sinks of this gas and their impact on Earth’s carbon cycle. This paper represents the study on feasibility of 13CO2 atmospheric vertical profile retrieval from satellite thermal infrared spectra measured with high spectral resolution. In IASI/METOP spectra, the spectral interval is determined, in which molecular absorption is mainly bound by the given isotopologue. A comparison was made of variations in the magnitude of spectral radiance due to variations in air temperature and in relative content of 13CO2 within the limits of known from studies on the direct measurement of the isotopic composition of atmospheric carbon dioxide. Prospects for building a robust algorithm is discussed.
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Ilya V. Zadvornykh, Konstantin G. Gribanov, Vyacheslav I. Zakharov, and Ryoichi Imasu "The feasibility of 13CO2 retrieval from IASI/METOP spectra", Proc. SPIE 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 112085F (18 December 2019); https://doi.org/10.1117/12.2540923
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KEYWORDS
Earth's atmosphere
Atmospheric modeling
Carbon
Carbon dioxide
Molecules
Atmospheric physics
Climatology
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