A nested model study of the Loop Current generated variability and its impact on the West Florida Shelf

Barth, Alexander; Alvera Azcarate, Aïda; Weisberg, R. H.

doi:10.1029/2007JC004492

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A nested model study of the Loop Current generated variability and its impact on the West Florida Shelf

Barth, Alexander; Alvera Azcarate, Aïda; Weisberg, R. H.

2008 • In Journal of Geophysical Research. Oceans, 113 (C5)

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https://hdl.handle.net/2268/26199

DOI
10.1029/2007JC004492

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Keywords :

coastal ocean model; vertical coordinate; temperature budget; system; circulation; surface; water; parametrization; implementation; assimilation

Abstract :

[en] A West Florida Shelf model based on the Regional Ocean Modeling System (ROMS) is nested in the North Atlantic Hybrid Coordinate Ocean Model (NAT HYCOM). The focus of this work is the study of the impact of the Loop Current on the West Florida Shelf. In order to assess the model's accuracy, it is compared quantitatively to in situ temperature and velocity measurements on the shelf. A series of sensitivity experiments are conducted to determine the appropriate wind forcing, sea surface temperature relaxation, and mixing scheme. By the inclusion of the Loop Current, we are able to study the propagation of an anticyclonic vortex detaching from the Loop Current. We found that the ambient gradient of potential vorticity is able to explain the vortex path and speed. The statistics of such Loop Current generated flow features were examined by including a tracer marking Loop Current water. This allows to track the Loop Current water on the West Florida Shelf and to quantify the amount of Loop Current water reaching the shelf.

Research center :

Centre Interfacultaire de Recherches en Océanologie - MARE - GHER

Disciplines :

Earth sciences & physical geography

Author, co-author :

Barth, Alexander ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie physique

Alvera Azcarate, Aïda ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > GeoHydrodynamics and Environment Research (GHER)

Weisberg, R. H.

Language :

English

Title :

A nested model study of the Loop Current generated variability and its impact on the West Florida Shelf

Publication date :

09 May 2008

Journal title :

Journal of Geophysical Research. Oceans

ISSN :

2169-9275

eISSN :

2169-9291

Publisher :

American Geophysical Union (AGU), Washington, United States - District of Columbia

Volume :

113

Issue :

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 22 October 2009

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Bibliography

Barnier, B., L. Siefridt, and P. Marchesiello (1995), Thermal forcing for global ocean circulation model using a 3-year climatology of ECMWF analyses, J. Mar. Syst., 6, 363-380.
Barron, C. N., A. B. Kara, P. J. Martin, R. C. Rhodes, and L. F. Smedstad (2006), Formulation, implementation and examination of vertical coordinate choices in the Global Navy Coastal Ocean Model (NCOM), Ocean Modell., 11, 347-375.
Barth, A., A. Alvera-Azcárate, and R. H. Weisberg (2007), Benefit of nesting a regional model into a large-scale ocean model instead of climatology. Application to the West Florida Shelf, Cont. Shelf Res., 28, 561-573.
Bertino, L., M. S. George, and K. A. Lisaeter (2007), Validation of a Hybrid Coordinate Ocean Model for the Indian Ocean, paper presented at Layered Ocean Model Workshop, Rosenstiel School of Mar. and Atmos. Sci., Bergen, Norway.
Browning, G. L., W. R. Holland, H.-O. Kreiss, and S. J. Worley (1990), An accurate hyperbolic system for approximately hydrostatic and incompressible oceanographic flows, Dyn. Atmos. Oceans, 14, 303-332.
Chapman, D. (1985), Numerical treatment of cross-shelf open boundaries in a barotropic coastal ocean model, J. Phys. Oceanogr., 15, 1060-1075.
Chassignet, E. P., H. E. Hurlburt, O. M. Smedstad, G. R. Halliwell, P. J. Hogan, A. J. Wallcraft, R. Baraille, and R. Bleck (2007), The HYCOM (HYbrid Coordinate Ocean Model) Data Assimilative System, J. Mar. Syst., 65, 60-83.
Cooper, M., and K. Haines (1996), Data assimilation with water property conservation, J. Geophys. Res., 101(C1), 1059-1077.
Cushman-Roisin, B. (1994), Introduction to Geophysical Fluid Dynamics, 320 pp. Prentice Hall, Englewood Cliffs, N. J.
Demirov, E., N. Pinardi, C. Fratianni, M. Tonani, L. Giacomelli, and P. Mey (2003), Assimilation scheme of the Mediterranean Forecasting System: Operational implementation, Ann. Geophys., 21, 189-204.
DeRada, S., J. C. Kindle, S. Anderson, I. Shulman, B. Penta, A. Wallcraft, and P. Martin (2006), Nesting regional models in a generalized coordinate (hybrid) global ocean Model, Eos Trans. American Geophysical Union, 87(36), Ocean Sci. Meet. Suppl., Abstract OS26O-22.
Di Lorenzo, E., A. J. Miller, N. Schneider, and J. C. McWilliams (2005), The warming of the California Current: Dynamics and ecosystem implications, J. Phys. Oceanogr., 35, 336-362.
Dorandeu, J., and P. Y. Le Traon (1999), Effects of global mean atmospheric pressure variations on mean sea level changes from TOPEX/ Poseidon, J. Atmos. Oceanic Technol., 16, 1279-1283.
Durski, S., S. Glenn, and D. Haidvogel (2004), Vertical mixing schemes in the coastal ocean: Comparison of the level 2.5 Mellor-Yamada scheme with an enhanced version of the K profile parameterization, J. Geophys. Res., 109, C01015, doi: 10.1029/2002JCOO1702.
Fairall, C., E. Bradley, D. Rogers, J. Edson, and G. Young (1996), Bulk parameterization of air-sea fluxes for TOGA COARE, J. Geophys. Res., 101, 3747-3764.
Flather, R. (1976), A tidal model of the northwest European continental shelf, Mem. Soc. R. Sci. Liege, 6(10), 141-164.
Halliwell, G. R. (2004), Evaluation of vertical coordinate and vertical mixing algorithms in the HYbrid-Coordinate Ocean Model (HYCOM), Ocean Modell., 7, 285-322, doi:10.1016/j.ocemod.2003.10.002.
Hamilton, P., and T. N. Lee (2005), Eddies and jets over the slope of the northeast Gulf of Mexico, in Circulation in the Gulf of Mexico: Observations and Models, Geophys. Monogr. Ser., vol. 161, edited by W. Sturges and A. Lugo-Fernandez, pp. 123-142, AGU, Washington, D. C.
He, R., and R. H. Weisberg (2002), West Florida shelf circulation and temperature budget for the 1999 spring transition, Cont. Shelf Res., 22, 719-748.
He, R., and R. H. Weisberg (2003a), West Florida Shelf circulation and temperature budget for the 1998 fall transition, Cont. Shelf Res., 23, 777-800.
He, R., and R. H. Weisberg (2003b), A loop intrusion case study on the West Florida Shelf, J. Phys. Oceanogr., 33, 465-477.
He, R., R. H. Weisberg, H. Zhang, F. Muller-Karger, and R. W. Helber (2003), A cloud-free, satellite-derived, sea surface temperature analysis for the West Florida Shelf, Geophys. Res. Lett., 30(15), 1811, doi:10.1029/2003GL017673.
He, R., Y. Liu, and R. H. Weisberg (2004), Coastal ocean wind fields gauged against the performance of an ocean circulation model, Geophys. Res. Lett., 31, L14303, doi:10.1029/2003GL019261.
Hetland, R. D., Y. Hsueh, R. R. Leben, and P. P. Niiler (1999), A loop current-induced jet along the edge of the West Florida Shelf, Geophys. Res. Lett., 26, 2239-2242.
Hu, C., J. R. Nelson, E. Johns, Z. Chen, R. H. Weisberg, and F. E. MüllerKarger (2005), Mississippi River water in the Florida Straits and in the Gulf Stream off Georgia in summer 2004, Geophys. Res. Lett., 32, L14606, doi:10.1029/2005GL022942.
Kara, A. B., and H. E. Hurlburt (2006), Daily inter-annual simulations of SST and MLD using atmospherically forced OGCMs: Model evaluation in comparison to buoy time series, J. Mar. Syst., 62, 95-119.
Kara, A. B., A. J. Wallcraft, P. J. Martin, and E. P. Chassignet (2008), Performance of mixed layer models in simulating SST in the equatorial Pacific Ocean, J. Geophys. Res., 113, C02020, doi: 10.1029/2007JC004250.
Kourafalou, V. H., R. S. Balotro, T. M. Chin, A. Srinivasan, A. J. Wallcraft, C. B. Paris, T. N. Lee, P. B. Ortner, and E. M. Johns (2006), Interdisciplinary nested simulations with the South Florida Regional SoFLAHYCOM Model, Eos Trans. American Geophysical Union, 57(36), Ocean Sei. Meet. Suppl., Abstract OS26N-23.
Kundu, P. K., and J. S. Allen (1976), Some three-dimensional characteristics of low-frequency current flucutuations near the Oregon coast., J. of Phys. Oceanogr., 6, 181-199.
Large, W., J. McWilliams, and S. Doney (1994), Oceanic vertical mixing: A review and a model with a nonlocal boundary layer parameterization, Rev. Geophys., 32, 363-403.
Leben, R. R. (2005), Altimeter-derived loop current metrics, in Circulation in the Gulf of Mexico: Observations and Models, Geophys. Monogr. Ser., vol. 161, edited by W. Stages and A. Lugo-Fernandez, pp. 181-201, AGU, Washington, D. C.
Le Traon, P.-Y., F. Nadal, and N. Ducet (1998), An improved mapping method of multisatellite altimeter data, J. Atmos. Oceanic Technol., 15, 522-534.
Li, Z., and R. Weisberg (1999), West Florida Shelf response to upwelling favorable wind forcing: Kinematics, J. Geophys. Res., 104, 13,50713,527.
Liu, Y, and R. Weisberg (2007), Ocean currents and sea surface heights estimated across the West Florida Shelf, J. Phys. Oceanogr., 37, 1697-1713.
Marchesiello, P., J. McWilliams, and A. Shchepetkin (2001), Open boundary condition for long-term integration of regional oceanic models, Ocean Modell., 3, 1 -20.
Mellor, G., and T. Yamada (1982), Development of a turbulence closure model for geophysical fluid problems, Rev. Geophys., 20, 851-875.
Murphy, A. H. (1988), Skill scores based on the mean square error and their relationships to the correlation coefficient, Mon. Weather Rev., 116, 2417-2424.
Oliger, J., and A. Sundstrom (1978), Theoretical and practical aspects of some initial and boundary value problems in fluid dynamics, SIAM J. Appl. Math., 35(3), 419-446.
Shchepetkin, A., and J. McWilliams (2003), A method for computing horizontal pressure-gradient force in an oceanic model with a nonaligned vertical coordinate, J. Geophys. Res., 108(C3), 3090, doi:10.1029/ 2001JC001047.
Shchepetkin, A., and J. McWilliams (2005), The Regional Oceanic Modeling System: A split-explicit, free-surface, topography-following-coordinate ocean model, Ocean Modell., 9, 347-404.
Smedstad, O., J. A. Cummings, E. J. Metzger, P. J. Hogan, H. E. Hurlburt, A. J. Wallcraft, and E. P. Chassignet (2007), Real-time HYCOM nowcast/ forecast systems, paper presented at 11th HYCOM Consortium Meeting, Nav. Res. Lab., Stennis Space Center, Miss.
Song, Y. T., and D. Haidvogel (1994), A Semi-implicit ocean circullation model using a generalized topography following coordinate system, J. Comput. Phys., 115, 228-248.
Spall, M. A., and W. R. Holland (1991), A nested primitive equation model of oceanic application, J. Phys. Oceanogr., 21, 205-220.
Srinivasan, A., Z. Garraffo, and M. Iskandarani (2007), Abyssal Circulation in the Indian Ocean from a high resolution HYCOM, paper presented at Layered Ocean Model Workshop, Rosenstiel School of Mar. and Atmos, Sci., Bergen, Norway.
Tester, P. A., and K. A. Steidinger (1997), Gymnodinium breve red tide blooms: Initiation, transport, and consequences of surface circulation, Limnol. Oceanogr., 42, 1039-1051.
Walsh, J., et al. (2003), Phytoplankton response to intrusions of slope water on the West Florida Shelf: Models and observations, J. Geophys. Res., I08(C6), 3190, doi: 10.1029/2002JC001406.
Weisberg, R. H., and R. He (2003), Local deep-ocean forcing contributions to anomalous water properties of the West Florida Shelf, J. Geophys. Res., 108(C6), 3184, doi:10.1029/2002JC001407.
Weisberg, R. H., B. D. Black, and Z. Li (2000), An upwelling case study on Florida's west coast, J. Geophys. Res., 105, 11,459-11,469.
Weisberg, R. H., L. Zhenjiang, and F. Muller-Karger (2001), West Florida shelf response to local wind forcing: April 1998, J. Geophys. Res., 106, 31,239-31,262.
Weisberg, R. H., R. He, Y. Liu, and J. I. Virmani (2005), West Florida Shelf circulation on synoptic, seasonal, and interannual time scales, in Circulation in the Gulf of Mexico: Observations and Models, Geophys. Monogr. Ser., vol. 161, edited by W. Stages and A. Lugo-Fernandez, pp. 325347, AGU, Washington, D. C.
Wilkin, J. L., H. G. Arango, D. B. Haidvogel, C. S. Lichtenwalner, S. M. Glenn, and K. S. Hedström (2005), A regional ocean modeling system for the Long-term Ecosystem Observatory, J. Geophys. Res., 110, C06S91, doi:10.1029/2003JC002218.