Retrieving the 13CO2/12CO2 isotopic ratio from high resolution ground-based FTIR measurement in Tsukuba

N. V. Rokotyan; R. Imasu; I. Morino; K. G. Gribanov; V. I. Zakharov

doi:10.1117/12.2504590

13 December 2018 Retrieving the ¹³CO₂/¹²CO₂ isotopic ratio from high resolution ground-based FTIR measurement in Tsukuba

N. V. Rokotyan, R. Imasu, I. Morino, K. G. Gribanov, V. I. Zakharov

Author Affiliations +

Proceedings Volume 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 108330N (2018) https://doi.org/10.1117/12.2504590
Event: XXIV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2018, Tomsk, Russian Federation

Abstract

In the current research we describe an attempt to retrieve the ¹³CO₂/¹²CO₂ isotopic ratio from high resolution ground-based FTIR measurements of atmospheric transmittance spectra recorded with the Bruker IFS 125HR instrument in Tsukuba, Japan. We discuss the retrieval approach, present the obtained results, that demonstrate a seasonal cycle with an amplitude not typical to atmospheric ¹³CO₂/¹²CO₂, and discuss major pitfalls of the retrieval.

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N. V. Rokotyan, R. Imasu, I. Morino, K. G. Gribanov, and V. I. Zakharov "Retrieving the ¹³CO₂/¹²CO₂ isotopic ratio from high resolution ground-based FTIR measurement in Tsukuba", Proc. SPIE 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 108330N (13 December 2018); https://doi.org/10.1117/12.2504590

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