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| Titel |
High-resolution simulations of atmospheric CO2 over complex terrain – representing the Ochsenkopf mountain tall tower |
| VerfasserIn |
D. Pillai, C. Gerbig, R. Ahmadov, C. Rödenbeck, R. Kretschmer, T. Koch, R. Thompson, B. Neininger, J. V. Lavrié |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 11, no. 15 ; Nr. 11, no. 15 (2011-08-01), S.7445-7464 |
| Datensatznummer |
250009955
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| Publikation (Nr.) |
 copernicus.org/acp-11-7445-2011.pdf |
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| Zusammenfassung |
| Accurate simulation of the spatial and temporal variability of tracer mixing
ratios over complex terrain is challenging, but essential in order to
utilize measurements made in complex orography (e.g. mountain and coastal
sites) in an atmospheric inverse framework to better estimate regional
fluxes of these trace gases. This study investigates the ability of
high-resolution modeling tools to simulate meteorological and CO2
fields around Ochsenkopf tall tower, situated in Fichtelgebirge mountain
range- Germany (1022 m a.s.l.; 50°1′48" N, 11°48′30" E). We used
tower measurements made at different heights for different seasons together
with the measurements from an aircraft campaign. Two tracer transport models
– WRF (Eulerian based) and STILT (Lagrangian based), both with a 2 km
horizontal resolution – are used together with the satellite-based
biospheric model VPRM to simulate the distribution of atmospheric CO2
concentration over Ochsenkopf. The results suggest that the high-resolution
models can capture diurnal, seasonal and synoptic variability of observed
mixing ratios much better than coarse global models. The effects of
mesoscale transports such as mountain-valley circulations and mountain-wave
activities on atmospheric CO2 distributions are reproduced remarkably
well in the high-resolution models. With this study, we emphasize the
potential of using high-resolution models in the context of inverse modeling
frameworks to utilize measurements provided from mountain or complex terrain
sites. |
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