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Sensitivity Study of Wind Forcing in a Numerical Model of Mesoscale Eddies in the Lee of Hawaii Islands : Volume 7, Issue 2 (10/03/2010)

By Kersalé, M.

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Book Id: WPLBN0003984901
Format Type: PDF Article :
File Size: Pages 24
Reproduction Date: 2015

Title: Sensitivity Study of Wind Forcing in a Numerical Model of Mesoscale Eddies in the Lee of Hawaii Islands : Volume 7, Issue 2 (10/03/2010)  
Author: Kersalé, M.
Volume: Vol. 7, Issue 2
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2010
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Petrenko, A. A., Doglioli, A. M., & Kersalé, M. (2010). Sensitivity Study of Wind Forcing in a Numerical Model of Mesoscale Eddies in the Lee of Hawaii Islands : Volume 7, Issue 2 (10/03/2010). Retrieved from http://worldlibrary.net/


Description
Description: Aix-Marseille Université, OSU/Centre d'Océanologie de Marseille, Marseille, France. The oceanic circulation around the Hawaiian archipelago is characterized by a complex circulation and the presence of mesoscale eddies west of the islands. These eddies typically develop and persist for weeks to several months in the area during persistent trade wind conditions. In order to find the best setup of a regional ocean model and to better understand the role of the wind forcing in the eddy formation, we compare numerical results obtained using two different wind stress databases: COADS and QuikSCAT. A detailed comparative analysis of wind forcing, modeled kinetic energy and eddy generation is proposed. Moreover, numerical cyclonic eddies are compared with the ones observed during the cruises E-FLUX (Dickey et al., 2008).

The main features of the ocean circulation in the area are well reproduced by our model forced by both COADS and QuickSCAT climatologies. Nevertheless, significant differences appear in the levels of kinetic energy and vorticity. The wind-forcing spatial resolution clearly affects the way in which the wind momentum feeds the mesoscale phenomena, and, the higher the resolution, the more realistic the ocean circulation. In particular, the simulation forced by QuikSCAT wind data reproduces well the observed energetic mesoscale structures and their hydrological characteristics and behavior.


Summary
Sensitivity study of wind forcing in a numerical model of mesoscale eddies in the lee of Hawaii islands

Excerpt
Aristegui, J., Sangra, P., Henandez-Leon, S., Canton, M., and Hernandez-Guerra, A.: Island-induced eddies in the Canary Islands, Deep-Sea Res. Pt. I, 41, 1509–1525, 1994.; Aristegui, J., Tett, P., Hernandez-Guerra, A., Basterretxea, G., Montero, M. F., Wild, K., Sangra, P., Hernandez-Leon, S., Canton, M., Garcia-Braun, J. A., Pacheco, M., and Barton, E. D.: The influence of island generated eddies on chlorophyll distribution: a study of mesoscale variation around Gran Canaria, Deep-Sea Res. Pt. I, 44, 71–96, 1997.; Barton, E., Basterretxea, G., Flament, P., Mitchelson-Jacob, E., Jones, B., Aristegui, J., and Herrera, F.: Lee region of Gran Canaria, J. Geophys. Res., 105, 17173–17193, 2000.; Beckmann, A. and Haidvogel, D.: Numerical simulation of flow around a tall isolated seamount. Part 1: Problem formulation and model accuracy, J. Phys. Oceanogr., 23(8), 1736–1753, 1993.; Bidigare, R. R., Benitez-Nelson, C., Leonard, C. L., Quay, P. D., Parsons, M. L., Foley, D. G., and Seki, M. P.: Influence of a cyclonic eddy on microheterotroph biomass and carbon export in the lee of Hawaii, Geophys. Res. Lett., 30, 1318, doi:10.1029/2002GL016393, 2003.; Blanke, B., Speich, S., Bentamy, A., Roy, C., and Sow, B.: Modeling the structure and variability of the southern Benguela upwelling using QuikSCAT wind forcing, J. Geophys. Res., 110, C07018, doi:10.1029/2004JC002529, 2005.; Calil, P. H. R., Richards, K. J., Yanli, J., and Bidigare, R. R.: Eddy activity in the lee of the Hawaiian Islands, Deep-Sea Res. Pt. II, 55, 1179–1194, 2008.; Callahan, P. S. and Lungu, T.: QuikSCAT Science Data Product User's Manual (v3.0), Tech. rep., Jet Propul. Lab., Pasadena, CA, 91 pp., 2006.; Chavanne, C., Flament, P., Lumpkin, R., Dousset, B., and Bentamy, A.: Scatterometer observations of wind variations induced by oceanic islands: implications for wind-driven ocean circulation., Can. J. Remote Sens., 28, 466–474, 2002.; Penven, P.: ROMSTOOLS user guide, Tech. rep., Inst. de Rech. pour le Dév., Paris, France, http://roms.mpl.ird.fr, 2003.; Chelton, D. B., deSzoeke, R. A., Schlax, M. G., El Naggar, K., and Siwertz, N.: Geographical variability of the first-baroclinic Rossby radius of deformation, J. Phys. Oceanogr., 28, 433–460, 1998.; Cherniawsky, J. Y. and Crawford, W. R.: Comparison between weather buoy and Comprehensive Ocean-Atmosphere Data Set wind data for the west coast of Canada, J. Geophys. Res., 101, 18377–18390, 1996.; Cushman-Roisin, B.: Introduction to Geophysical Fluid Dynamics, Prentice Hall, 1994.; Da Silva, A. M., Young, C. C., and Levitus, S.: Atlas of surface marine data 1994, vol. 1, algorithms and procedures, Tech. rep., U. S. Department of Commerce, NOAA, 1994.; Dickey, T. D., Nencioli, F., Kuwahara, V. S., Leonard, C., Black, W., Rii, Y. M., Bidigare, R. R., and Zhang, Q.: Physical and bio-optical observations of oceanic cyclones west of the island of Hawai\'i, Deep-Sea Res. Pt. II, 55, 1195–1217, 2008.; Firing, Y. L. and Merrifield, M. A.: Extreme sea level events at Hawaii : Influence of mesoscale eddies, Geophys. Res. Lett., 31, L24306, doi:10.1029/2004GL021539, 2004.; Lumpkin, C. F.: Eddies and currents in the Hawaii islands, Ph.D. thesis, University of Hawaii, 1998.; Marchesiello, P., McWilliams, J. C., and Shchepetkin, A.: Open boundary condition for long-term integration of regional oceanic models, Ocean Model., 3, 1–21,

 

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