A vector geometry-based eddy detection algorithm and its application to a high-resolution numerical model product and high-frequency radar surface velocities in the Southern California Bight

Journal of Atmospheric and Oceanic Technology

Volumn 27, Issue 3, 2010, Pages 564-579

  Nencioli, Francesco ^a   Dong, Changming ^b   Dickey, Tommy ^a   Washburn, Libe ^a   Mcwilliams, James C ^b  

^a UNIVERSITY OF CALIFORNIA   (United States)

^b UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CLOSED CONTOURS; EDDY ACTIVITY; EDDY DETECTION; EDDY SIZE; EXISTING METHOD; FUNDAMENTAL TOOLS; GRID POINTS; HIGH RESOLUTION; HIGH-FREQUENCY RADAR; HIGH-RESOLUTION MODELS; LARGE DATASETS; NUMERICAL MODEL SIMULATIONS; NUMERICAL MODELS; PHYSICAL PARAMETERS; SATELLITE MEASUREMENTS; SEA LEVEL ANOMALY; SOUTHERN CALIFORNIA BIGHT; SPATIAL DISTRIBUTION; STREAMFUNCTIONS; SURFACE VELOCITY; TIME STEP; TWO PARAMETER; VECTOR GEOMETRY; VELOCITY FIELD; VELOCITY VECTORS;

ALGORITHMS; COMPUTATIONAL GEOMETRY; COMPUTER SIMULATION; NUMERICAL METHODS; OCEAN CURRENTS; RADAR; SEA LEVEL; SIZE DISTRIBUTION;

VELOCITY;

ALGORITHM; COMPUTER SIMULATION; DATA SET; EDDY; FLOW VELOCITY; GEOMETRY; MODEL VALIDATION; NUMERICAL MODEL; OCEANOGRAPHY; RADAR; SATELLITE DATA; SATELLITE IMAGERY; SEA LEVEL; SPATIAL DISTRIBUTION; VECTOR;

PACIFIC OCEAN; SOUTHERN CALIFORNIA BIGHT;

EID: 77953039486     PISSN: 07390572     EISSN: None     Source Type: Journal    
DOI: 10.1175/2009JTECHO725.1     Document Type: Article

References (27)

1. Benitez-Nelson, C. R., and Coauthors, 2007: Mesoscale eddies drive increased silica export in the subtropical Pacific Ocean. Science, 316, 1017-1021.
2. Caldeira, R. M. A., P. Marchesiello, N. P. Nezlin, P. M. DiGiacomo, and J. C. McWilliams, 2005: Island wakes in the Southern California Bight. J. Geophys. Res., 110, C11012, doi:10.1029/2004JC002675.
3. Capet,X.,J.C.McWilliams,M.J.Molemaker, and A.F.Shchepetkin, 2008: Mesoscale to submesoscale transition in the California Current system. Part I: Flow structure, eddy flux, and observational tests. J. Phys. Oceanogr., 38, 29-43.
4. Carton, J. A., G. Chepurin, X. Cao, and B. Giese, 2000: A Simple Ocean Data Assimilation analysis of the global upper ocean 1950-95. Part I: Methodology. J. Phys. Oceanogr., 30, 294-309.
5. Chaigneau, A., A. Gizolme, and C. Grados, 2008: Mesoscale eddies off Peru in altimeter records: Identification algorithms and eddy spatio-temporal patterns. Prog. Oceanogr., 79 (2-4), 106-119.
6. Chelton, D. B., M. G. Schlax, R. M. Samelson, and R. A. de Szoeke, 2007: Global observations of large oceanic eddies. Geophys. Res. Lett., 34, L15606, doi:10.1029/2007GL030812.
7. Conil, S., and A. Hall, 2006: Local regimes of atmospheric vari- ability: A case study of Southern California. J. Climate, 19, 4308-4325.
8. Dickey, T. D., F. Nencioli, V. S. Kuwahara, C. Leonard, W. Black, Y. M. Rii, R. R. Bidigare, and Q. Zhang, 2008: Physical and bio-optical observations of oceanic cyclones west of the island of Hawai'i. Deep Sea Res. II, 55 (10-13), 1195-1217.
9. Doglioli, A. M., B. Blanke, S. Speich, and G. Lapeyre, 2007: Tracking coherent structures in a regional ocean model with wavelet analysis: Application to Cape Basin eddies. J. Geophys. Res., 112, C05043, doi:10.1029/2006JC003952.
10. Dong, C., and J. C. McWilliams, 2007: A numerical study of island wakes in the Southern California Bight. Cont. Shelf Res., 27, 1233-1248.
11. Dong, C., E. Y. Idica, and J. C. McWilliams, 2009a: Circulation and multiple-scale variability in the Southern California Bight. Prog. Oceanogr., 82, 168-190.
12. Dong, C., and Coauthors, 2009b: An oceanic cyclonic eddy on the lee side of Lanai Island, Hawai'i. J. Geophys. Res., 114, C10008, doi:10.1029/2009JC005346.
13. Emery, B., L. Washburn, and J. Harlan, 2004: Evaluating radial current measurements from CODAR high-frequency radars with moored current meters. J. Atmos. Oceanic Technol., 21, 1259-1271.
14. Falkowski, P. G., D. Ziemann, Z. Kolber, and P. K. Bienfang, 1991: Role of eddy pumping in enhancing primary production in the ocean. Nature, 352, 55-58.
15. Isern-Fontanet, J., E. Garcia-Ladona, and J. Font, 2003: Identification of marine eddies from altimetric maps. J. Atmos. Oce- anic Technol., 20, 772-778.
16. McGillicuddy, D. J., Jr., and Coauthors, 1998: Influence of meso-scale eddies on new production in the Sargasso Sea. Nature, 394, 263-266.
17. McNeil, J. D., H. W. Jannasch, T. Dickey, D. McGillicuddy, M. Brzezinski, and C. M. Sakamoto, 1999: New chemical, bio-optical and physical observations of upper ocean response to the passage of a mesoscale eddy off Bermuda. J. Geophys. Res., 104 (C7), 15 537-15 548.
18. McWilliams, J. C., 1990: The vortices of two-dimensional turbulence. J. Fluid Mech., 219, 361-385.
19. McWilliams, J. C, 2008: The nature and consequence of oceanic eddies. Ocean Modeling in an Eddying Regime, Geophys. Monogr., Vol. 177, Amer. Geophys. Union, 5-15.
20. Morrow, R., F. Birol, D. Griffin, and J. Sudre, 2004: Divergent pathways of cyclonic and anti-cyclonic ocean eddies. Geophys. Res. Lett., 31, L24311, doi:10.1029/2004GL020974.
21. Nencioli, F., V. S. Kuwahara, T. D. Dickey, Y. M. Rii, and R. R. Bidigare, 2008: Physical dynamics and biological implications of a mesoscale eddy in the lee of Hawai'i: Cyclone Opal observations during E-Flux III. Deep Sea Res. II, 55 (10-13), 1252-1274.
22. Okubo, A., 1970: Horizontal dispersion of floatable particles in vicinity of velocity singularities such as convergences. Deep- Sea Res., 17, 445-454.
23. Olson, D. B., 1991: Rings in the ocean. Annu. Rev. Earth Planet. Sci., 19, 283-311.
24. Robinson, S. K., 1991: Coherent motions in the turbulent boundary- layer. Annu. Rev. Fluid Mech., 23, 601-639.
25. Sadarjoen, I. A., and F. H. Post, 2000: Detection, quantification, and tracking of vortices using streamline geometry. Comput. Graphics, 24, 333-341.
26. Shchepetkin, A. F., and J. C. McWilliams, 2005: The regional oceanic modeling system (ROMS): A split-explicit, free-surface, topography-following-coordinate oceanic model. Ocean Modell., 9, 347-404.
27. Weiss, J., 1991: The dynamics of enstrophy transfer in 2-dimensional hydrodynamics. Physica D, 48 (2-3), 273-294.