http://www.cnr.it/ontology/cnr/individuo/prodotto/ID179133
Resolution dependent relative dispersion statistics in a hierarchy of ocean models (Articolo in rivista)
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- Resolution dependent relative dispersion statistics in a hierarchy of ocean models (Articolo in rivista) (literal)
- Anno
- 2010-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.ocemod.2009.09.002 (literal)
- Alternative label
Poje, Andrew C. (1);
Haza, Angelique C. (2);
Özgökmen, Tamay M. (2);
Magaldi, Marcello G. (3);
Garraffo, Zulema D. (4) (2010)
Resolution dependent relative dispersion statistics in a hierarchy of ocean models
in Ocean modelling (Oxf., Print); Editore: Elsevier, Oxford (Regno Unito)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Poje, Andrew C. (1);
Haza, Angelique C. (2);
Özgökmen, Tamay M. (2);
Magaldi, Marcello G. (3);
Garraffo, Zulema D. (4) (literal)
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- http://linkinghub.elsevier.com/retrieve/pii/S1463500309001826 (literal)
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- (1) CUNY Coll Staten Isl, Dept Math, Staten Isl, NY 10314 USA;
(2) Univ Miami, RSMAS MPO, Miami, FL USA;
(3) Johns Hopkins Univ, Dept Earth & Planetary Sci, Baltimore, MD 21218 USA;
(4) Univ Miami, Ctr Computat Sci, Miami, FL USA (literal)
- Titolo
- Resolution dependent relative dispersion statistics in a hierarchy of ocean models (literal)
- Abstract
- In order to determine the effect of Eulerian spatial resolution on the two particle statistics of synthetic drifter trajectories, we examine a hierarchy of ocean models, starting from 2D turbulence simulations, progressing to idealized simulations of a buoyant coastal jet with ROMS, and finally to realistic HYCOM simulations of the Gulf Stream. In each case, particle dispersion at large time and space scales is found to be controlled by energetic meso-scale features of the flow that are relatively insensitive to the resolution of finer scale motions. In all cases, time-distance graphs given in terms of computed Finite Scale Lyapunov Exponents show an expected increase in the extent of exponential scaling with increasing spatial smoothing of the velocity field. The limiting value of the FSLE at small separation distances is found to scale remarkably well with the resolution of Eulerian velocity gradients as given by the average of positive Okubo-Weiss parameter values. (literal)
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