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| Titel |
Analysis of CO2 Diurnal Cycle in Boundary Layer over China - Observations and Modeling |
| VerfasserIn |
Yinan Wang, Daren Lu, Qian Li, Yubing Pan |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250078115
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| Zusammenfassung |
| A 3-D global CTM (Chemical Transport Model) GEOS-Chem, driven by GEOS-5 meteorology fields, has been used to simulate CO2 concentration and variation over China from 2004 to 2009 in this study. We analyze CO2 concentration observed by two eddy flux observation towers in Beijing (39.9°N, 116.3°E) and Hefei (31.9°N, 117.3°E). GEOS-Chem well captures the main aspects of the diurnal cycle of CO2 concentration in boundary layer observed in Beijing and Hefei. However, we still find some discrepancies existing between the model and observations, where model tends to overestimate CO2 concentration. On the other hand, model sensitivity studies suggest that Net Ecosystem Productivity (NEP) flux may play an important role controlling the diurnal cycle of CO2 in boundary layer. |
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