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| Titel |
Evaluation of a near-global eddy-resolving ocean model |
| VerfasserIn |
P. R. Oke, D. A. Griffin, A. Schiller, R. J. Matear, R. Fiedler, J. Mansbridge, A. Lenton, M. Cahill, M. A. Chamberlain, K. Ridgway |
| 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 ; 6, no. 3 ; Nr. 6, no. 3 (2013-05-03), S.591-615 |
| Datensatznummer |
250017815
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| Publikation (Nr.) |
 copernicus.org/gmd-6-591-2013.pdf |
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| Zusammenfassung |
| Analysis of the variability of the last 18 yr (1993–2012) of a 32 yr run
of a new near-global, eddy-resolving ocean general circulation model coupled
with biogeochemistry is presented. Comparisons between modelled and observed
mean sea level (MSL), mixed layer depth (MLD), sea level anomaly (SLA), sea
surface temperature (SST), and {\chla} indicate that the model variability is
realistic. We find some systematic errors in the modelled MLD, with the model
generally deeper than observations, which results in errors in the {\chla},
owing to the strong biophysical coupling. We evaluate several other metrics
in the model, including the zonally averaged seasonal cycle of SST,
meridional overturning, volume transports through key straits and passages,
zonally averaged temperature and salinity, and El Niño-related SST
indices. We find that the modelled seasonal cycle in SST is
0.5–1.5 °C weaker than observed; volume transports of the Antarctic
Circumpolar Current, the East Australian Current, and Indonesian Throughflow
are in good agreement with observational estimates; and the correlation
between the modelled and observed NINO SST indices exceeds 0.91. Most aspects
of the model circulation are realistic. We conclude that the model output is
suitable for broader analysis to better understand upper ocean dynamics and
ocean variability at mid- and low latitudes. The new model is intended to
underpin a future version of Australia's operational short-range ocean
forecasting system. |
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