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  Study of the footprints of short-term variation in XCO2 observed by TCCON sites using NIES and FLEXPART atmospheric transport models

Belikov, D. A., Maksyutov, S., Ganshin, A., Zhuravlev, R., Deutscher, N. M., Wunch, D., et al. (2017). Study of the footprints of short-term variation in XCO2 observed by TCCON sites using NIES and FLEXPART atmospheric transport models. Atmospheric Chemistry and Physics, 17(1), 143-157. doi:10.5194/acp-17-143-2017.

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 Urheber:
Belikov, D. A., Autor
Maksyutov, S., Autor
Ganshin, A., Autor
Zhuravlev, R., Autor
Deutscher, N. M., Autor
Wunch, D., Autor
Feist, Dietrich G.1, Autor           
Morino, I., Autor
Parker, R. J., Autor
Strong, K., Autor
Yoshida, Y., Autor
Bril, A., Autor
Oshchepkov, S., Autor
Boesch, H., Autor
Dubey, M. K., Autor
Griffith, D., Autor
Hewson, W., Autor
Kivi, R., Autor
Mendonca, J., Autor
Notholt, J., Autor
Schneider, M., AutorSussmann, R., AutorVelazco, V., AutorAoki, S., Autor mehr..
Affiliations:
1Atmospheric Remote Sensing Group, Dr. D. Feist, Department Biogeochemical Systems, Prof. M. Heimann, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497783              

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 Zusammenfassung: The Total Carbon Column Observing Network (TCCON) is a network of ground-based Fourier Transform Spectrometers (FTS) that record near-infrared (NIR) spectra of the Sun. From these spectra, accurate and precise observations of CO2 column-averaged dry-air mole fraction (denoted XCO2) are retrieved. TCCON FTS observations have previously been used to validate satellite estimations of XCO2; however, our knowledge of the short-term spatial and temporal variations in XCO2 surrounding the TCCON sites is limited. In this work, we use the National Institute for Environmental Studies (NIES) Eulerian three-dimensional transport model and the FLEXPART (FLEXible PARTicle) Lagrangian Particle Dispersion Model (LPDM) to determine the footprints of short-term variations in XCO2 observed by operational, past, future, and possible TCCON sites. We propose a footprint-based method for the colocation of satellite and TCCON XCO2 observations, and estimate the performance of the method using the NIES model and five GOSAT XCO2 product datasets. Comparison of the proposed approach with a standard geographic method shows higher number of colocation points and average bias reduction up to 0.15 ppm for a subset of 16 stations for the period from January 2010 to January 2014. Case studies of the Darwin and La Réunion sites reveal that when the footprint area is rather curved, non-uniform and significantly different from a geographical rectangular area, the differences between these approaches are more noticeable. This emphasizes that the colocation is sensitive to local meteorological conditions and flux distributions.

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 Datum: 2016-12-012017-01-032017
 Publikationsstatus: Erschienen
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 Identifikatoren: Anderer: BGC2454
DOI: 10.5194/acp-17-143-2017
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Titel: Atmospheric Chemistry and Physics
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Katlenburg-Lindau, Germany : European Geosciences Union
Seiten: - Band / Heft: 17 (1) Artikelnummer: - Start- / Endseite: 143 - 157 Identifikator: ISSN: 1680-7316
CoNE: https://pure.mpg.de/cone/journals/resource/111030403014016