Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/2545
DC Field | Value | Language |
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dc.contributor.authorall | Dobricic, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia | en |
dc.date.accessioned | 2007-10-08T12:17:19Z | en |
dc.date.available | 2007-10-08T12:17:19Z | en |
dc.date.issued | 2006 | en |
dc.identifier.uri | http://hdl.handle.net/2122/2545 | en |
dc.description.abstract | The central differencing grid with fully staggered velocity components (C grid) is widely used in primitive equations oceanographic models despite potential problems in simulating baroclinic inertiagravity and Rossby waves that can arise due to the averaging of velocity components in the Coriolis terms. This note proposes a new averaging of the velocity components in order to calculate the Coriolis terms on the C grid. The averaging weights are calculated from the minimum of a suitably defined cost function which optimally minimizes the error in the inertial part of frequencies of inertia-gravity waves and maintains the second order accuracy of the computations. The theoretical analysis of wave frequency diagrams shows that the new scheme results in more accurate frequencies of long inertia-gravity and Rossby waves, especially when the Rossby radius of deformation is not resolved well by the grid resolution. | en |
dc.language.iso | English | en |
dc.relation.ispartof | Monthly Weather Review | en |
dc.relation.ispartofseries | 12 / 134 (2006) | en |
dc.subject | Coriolis terms | en |
dc.subject | C grid | en |
dc.title | An improved calculation of Coriolis terms on the C grid | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 3764-3773 | en |
dc.subject.INGV | 03. Hydrosphere::03.01. General::03.01.01. Analytical and numerical modeling | en |
dc.relation.references | Adcroft, A.J., C.N. Hill, and J.C. Marshall (1999), A new treatment of the Coriolis terms in C-grid models at both high and low resolutions. Mon. Wea. Rev., 127, 1928-1936. Arakawa, A., and V.R. Lamb (1977), Computational design of the basic dynamical processes of the UCLA general circulation model. Methods in Computational Physics, Ed. Chang J., Academic Press, 174-267. Asselin, R. (1972), Frequency filter for time integrations. Mon. Wea. Rev., 100, 487-490. Haidvogel, D.B., and A. Beckmann (1999), Numerical ocean circulation modeling. Imperial College Press, London, 320p. Mesinger, F., and A. Arakawa (1976), Numerical methods used in atmospheric models. Tech. Rep. WMO/ICSU Joint Organizing Comittee GARP Publ. Series. Nechaev, D., and M. Yaremchuk (2004), On the approximation of the Coriolis term in C-grid models. Mon. Wea. Rev., 132, 2283-2289. Neta, B., and R.T. Williams (1989), Rossby wave frequencies and group velocities for finite element and finite difference approximations to the vorticitydivergence and the primitive forms of the shallow water equations Mon. Wea. Rev., 117, 1439-1457. Smith, R.D., D.B. Boudra, and R. Bleck (1990), A wind-driven isopycnal coordinate model of the north and equatorial Atlantic Ocean: The Atlantic-basin experiments. J. Geophys. Res., 95, 13105-13128. Wajsowicz, R.C. (1986), Free planetary waves in finite-difference numerical models. J. Phys. Ocean., 16, 773-789. | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | open | en |
dc.contributor.author | Dobricic, S. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.classification.parent | 03. Hydrosphere | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
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