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Simulations of column-averaged CO2 and CH4 using the NIES TM with a hybrid sigma-isentropic (σ-θ) vertical coordinate

Belikov, D.; Maksyutov, S.; Sherlock, V.; Aoki, S.; Deutscher, N. M.; Dohe, S.; Griffith, D.; Kyro, E.; Morino, I.; Nakazawa, T.; Notholt, J.; Rettinger, M.; Schneider, M:; Sussmann, R.; Toon, G. C.; Wennberg, P. O.; Wunch, D.

We have developed an improved version of the National Institute for Environmental Studies (NIES) threedimensional chemical transport model (TM) designed for accurate tracer transport simulations in the stratosphere, using a hybrid sigma-isentropic (σ-θ) vertical coordinate that employs both terrain-following and isentropic parts switched smoothly around the tropopause. The air-ascending rate was derived from the effective heating rate and was used to simulate vertical motion in the isentropic part of the grid (above level 350 K), which was adjusted to fit to the observed age of the air in the stratosphere. Multi-annual simulations were conducted using the NIES TM to evaluate vertical profiles and dry-air column-averaged mole fractions of CO2 and CH4. Comparisons with balloon-borne observations over Sanriku (Japan) in 2000–2007 revealed that the tracer transport simulations in the upper troposphere and lower stratosphere are performed with accuracies of ~5% for CH4 and SF6, and ~1% for CO2 compared with the observed volume-mixing ratios. The simulated columnaveraged dry air mole fractions of atmospheric carbon dioxide (XCO2) and methane (XCH4) were evaluated against daily ground-based high-resolution Fourier Transform Spectrometer (FTS) observations measured at twelve sites of the Total Carbon Column Observing Network (TCCON) (Bialystok, Bremen, Darwin, Garmisch, Iza˜na, Lamont, Lauder, Orleans, Park Falls, Sodankyl¨a, Tsukuba, and Wollongong) between January 2009 and January 2011. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000038830
Veröffentlicht am 06.04.2018
DOI: 10.5194/acp-13-1713-2013
Zitationen: 32
Web of Science
Zitationen: 31
Zitationen: 29
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2013
Sprache Englisch
Identifikator ISSN: 1680-7316, 1680-7324
KITopen-ID: 1000038830
HGF-Programm 12.03.01 (POF II, LK 01) Atmosphärische Variabilität und Trends
Erschienen in Atmospheric chemistry and physics
Verlag European Geosciences Union (EGU)
Band 13
Heft 4
Seiten 1713-1732
Nachgewiesen in Dimensions
Web of Science
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