Formulation, implementation and examination of vertical coordinate choices in the Global Navy Coastal Ocean Model (NCOM)

Barron, Charlie N.; Kara, A. Birol; Martin, Paul J.; Rhodes, Robert C.; Smedstad, Lucy F.

doi:10.1016/j.ocemod.2005.01.004

Cited by 231 publications

(131 citation statements)

References 39 publications

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“…This model configuration has shown good agreement with tidal and de-tided ADCP current observations and reproduced some of the observed temperature and salinity spatial profiles (Martin et al, 2006). Additionally, the model response to Bora wind events displayed the usually observed pattern of cyclonic and anticyclonic gyres.…”

Section: Coastal Model and Configurationsupporting

confidence: 66%

“…First, we analyze synthetic drifter trajectories from the Navy Coastal Ocean Model (NCOM) with high-resolution (1 km) and realistic wind, river outflow, tidal, and atmospheric forcings. The model has been shown to lead to accurate analyses on the basis of operational programs conducted in the Adriatic Sea (Martin et al, 2006;Haza et al, 2007). The Adriatic circulation provides a relatively extreme case of a bounded ocean flow dominated by coherent features including intense boundary currents and separation regions and, in this sense, is quite far removed from a homogeneous or isotropic turbulence.…”

Section: (3)mentioning

confidence: 99%

“…The ocean model used for this study is the NCOM as described in Martin (2000), with some improvements as described in Morey et al (2003) and Barron et al (2006). This is a hydrostatic model, which is similar in its physics and numerics to the Princeton Ocean Model (POM) (Blumberg and Mellor, 1987), but uses an implicit treatment of the free surface and a hybrid vertical grid with sigma coordinates in the upper layers and (optionally) level coordinates below a user-specified depth.…”

Section: Coastal Model and Configurationmentioning

confidence: 99%

“…The setting of the model for the Adriatic Sea is described in detail in Martin et al (2006). The horizontal grid resolution is 1019.5 m. The vertical grid consists of 32 total layers, with 22 sigma layers used from the surface down to a depth of 291 m and level coordinates used below 291 m. Hence, the grid is like a regular sigma coordinate grid in water shallower than 291 m and similar to a level grid in deeper water.…”

Section: Coastal Model and Configurationmentioning

confidence: 99%

“…la. The reader is referred to Poulain (1999Poulain ( , 2001, Cushman-Roisin et al (2001, Falco et al (2000), Maurizi et al (2004) and Martin et al (2006) for a comprehensive discussion of the circulation features and data sets. The main point is that the NCOM simulation employed here adequately approximates the main features of the upper circulation in the Adriatic Sea.…”

Section: Coastal Model and Configurationmentioning

confidence: 99%

See 4 more Smart Citations

Relative dispersion from a high-resolution coastal model of the Adriatic Sea

et al. 2008

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Section: Coastal Model and Configurationsupporting

confidence: 66%

Section: (3)mentioning

confidence: 99%

Section: Coastal Model and Configurationmentioning

confidence: 99%

Section: Coastal Model and Configurationmentioning

confidence: 99%

Section: Coastal Model and Configurationmentioning

confidence: 99%

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Relative dispersion from a high-resolution coastal model of the Adriatic Sea

et al. 2008

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Hindcasts of potential harmful algal bloom transport pathways on the Pacific Northwest coast

Giddings

MacCready

Hickey

et al. 2014

J. Geophys. Res. Oceans

111

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Harmful algal blooms (HABs) pose a significant threat to human and marine organism health, and negatively impact coastal economies around the world. An improved understanding of HAB formation and transport is required to improve forecasting skill. A realistic numerical simulation of the US Pacific Northwest region is used to investigate transport pathways from known HAB formation hot spots, specifically for Pseudo-nitzschia (Pn), to the coast. We show that transport pathways are seasonal, with transport to the Washington (WA) coast from a northern source (the Juan de Fuca Eddy) during the summer/fall upwelling season and from a southern source (Heceta Bank) during the winter/early spring due to the predominant wind-driven currents. Interannual variability in transport from the northern source is related to the degree of wind intermittency with more transport during years with more frequent relaxation/downwelling events. The Columbia River plume acts to mitigate transport to the coast as the plume front blocks onshore transport. The plume's influence on alongshore transport is variable although critical in aiding transport from the southern source to the WA coast via plume entrainment. Overall transport from our simulations captures most observed Pn HAB beach events from 2004 to 2007 (characterized by Pseudo-nitzschia cell abundance); however, numerous false positives occur. We show that incorporating phytoplankton biomass results from a coupled biogeochemical model reduces the number of false positives significantly and thus improves our Pn HAB predictions.

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Evaluation of altimetry-derived surface current products using Lagrangian drifter trajectories in the eastern Gulf of Mexico

Liu

Weisberg

Vignudelli

et al. 2014

J. Geophys. Res. Oceans

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Lagrangian particle trajectory models based on several altimetry-derived surface current products are used to hindcast the drifter trajectories observed in the eastern Gulf of Mexico during May to August 2010 (the Deepwater Horizon oil spill incident). The performances of the trajectory models are gauged in terms of Lagrangian separation distances (d) and a nondimensional skill score (s), respectively. A series of numerical experiments show that these altimetry-based trajectory models have about the same performance, with a certain improvement by adding surface wind Ekman components, especially over the shelf region. However, their hindcast skills are slightly better than those of the data assimilative numerical model output. After 3 days' simulation the altimetry-based trajectory models have mean d values of 75-83 and 34-42 km (s values of 0.49-0.51 and 0.35-0.43) in the Gulf of Mexico deep water area and on the West Florida Continental Shelf, respectively. These satellite altimetry data products are useful for providing essential information on ocean surface currents of use in water property transports, offshore oil and gas operations, hazardous spill mitigation, search and rescue, etc.

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Formulation, implementation and examination of vertical coordinate choices in the Global Navy Coastal Ocean Model (NCOM)

Cited by 231 publications

References 39 publications

Relative dispersion from a high-resolution coastal model of the Adriatic Sea

Relative dispersion from a high-resolution coastal model of the Adriatic Sea

Hindcasts of potential harmful algal bloom transport pathways on the Pacific Northwest coast

Evaluation of altimetry-derived surface current products using Lagrangian drifter trajectories in the eastern Gulf of Mexico

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