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| Titel |
Description and basic evaluation of Beijing Normal University Earth System Model (BNU-ESM) version 1 |
| VerfasserIn |
D. Ji, L. Wang, J. Feng, Q. Wu, H. Cheng, Q. Zhang, J. Yang, W. Dong, Y. Dai, D. Gong, R.-H. Zhang, X. Wang, J. Liu, J. C. Moore, D. Chen, M. Zhou |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 7, no. 5 ; Nr. 7, no. 5 (2014-09-12), S.2039-2064 |
| Datensatznummer |
250115720
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| Publikation (Nr.) |
 copernicus.org/gmd-7-2039-2014.pdf |
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| Zusammenfassung |
| An earth system model has been developed at Beijing Normal University
(Beijing Normal University Earth System Model, BNU-ESM); the model is based
on several widely evaluated climate model components and is used to study
mechanisms of ocean-atmosphere interactions, natural climate variability and
carbon-climate feedbacks at interannual to interdecadal time scales. In this
paper, the model structure and individual components are described briefly.
Further, results for the CMIP5 (Coupled Model Intercomparison Project phase
5) pre-industrial control and historical simulations are presented to
demonstrate the model's performance in terms of the mean model state and the
internal variability. It is illustrated that BNU-ESM can simulate many
observed features of the earth climate system, such as the climatological
annual cycle of surface-air temperature and precipitation, annual cycle of
tropical Pacific sea surface temperature (SST), the overall patterns and
positions of cells in global ocean meridional overturning circulation. For
example, the El Niño-Southern Oscillation (ENSO) simulated in BNU-ESM
exhibits an irregular oscillation between 2 and 5 years with the seasonal
phase locking feature of ENSO. Important biases with regard to observations
are presented and discussed, including warm SST discrepancies in the major
upwelling regions, an equatorward drift of midlatitude westerly wind bands,
and tropical precipitation bias over the ocean that is related to the double
Intertropical Convergence Zone (ITCZ). |
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