| Dynamical Evaluation of Ocean Models Using the Gulf Stream as an Example |
10 Feb 2012 |
66 pages |
| Authors:
Harley E Hurlburt; E J Metzger; James G Richman; Eric P Chassignet; Yann Drillet; Matthew W Hecht; Olivier Le Galloudec; Jay F Shriver; Xiaobiao Xu; Luis Zamudio; NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
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 | The Gulf Stream is the focus of an effort aimed at dynamical understanding and evaluation of current systems simulated by eddy-resolving Ocean General Circulation Models (OGCMs), including examples with and without data assimilation and results from four OGCMs (IIYCOM. MICOM, NEMO, and POP), the first two including Lagrangian isopycnal coordinates in the vertical and the last two using fixed depths. The Gulf Stream has been challenging to simulate and understand. ... |
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| Circulation in the Philippine Archipelago. Simulated by 1/12 deg. and 1/25 deg. Global HYCOM and EAS NCOM |
Mar 2011 |
21 pages |
| Authors:
Harley E Hurlburt; E J Metzger; Janet Sprintall; Shelley N Riedlinger; Robert A Arnone; Toshiaki Shinoda; Xiaobiao Xu; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
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| In PhilEx 1/12 and 1/25 world ocean models provided a global context for the Philippine Archipelago circulation. This archipelago provides two secondary routes for both the Indonesian throughflow and the western boundary current of the Pacific northern tropical gyre. These enter via Mindoro and Surigao Straits and exit via Sibutu Passage. The outflow continues through Makassar Strait, the primary conduit of the Indonesian throughflow, at all depths above the Sibutu ... |
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| Dynamical Evaluation of Ocean Models using the Gulf Stream as an Example |
Jan 2010 |
45 pages |
| Authors:
Harley E Hurlburt; E J Metzger; James G Richman; Eric P Chassignet; Yann Drillet; Matthew W Le Hecht; Olivier Galloudec; Xiaobiao Xu; Luis Zamudio; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
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| Ocean models run with atmospheric forcing but without ocean data assimilation are useful in studies of ocean model dynamics and simulation skill. Models that give realistic simulations with accurate dynamics, when run without data assimilation, are essential for eddy-resolving ocean prediction because of the multiple roles that ocean models must play in ocean nowcasting and forecasting, including dynamical interpolation during data assimilation, representing sparsely observed subsurface ocean features from the ... |
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| Dynamical Evaluation of Gulf Stream Simulations in Models with High Vertical Resolution |
03 Jun 2009 |
18 pages |
| Authors:
Harley E Hurlburt; Eric P Chassignet; E J Metzger; James G Richman; Schmitz; William J Jr; Jay F Shriver; Alan J Wallcraft; Xiaobiao Xu; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS
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| Evaluation in the Gulf Steam Region: Summary and Conclusions * Given an understanding of Gulf Stream dynamics - supported by a wide range of observational evidence in the upper and abyssal ocean * We can evaluate Gulf Stream simulations dynamically - Allows us to identify relationships between flaws in the simulation and flaws in the dynamics - Helps us identify specific improvements that are needed - Much more powerful approach ... |
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