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dc.contributor.authorChu, Peter C.
dc.contributor.authorFan, Chenwu
dc.date.accessioned2014-09-29T16:48:57Z
dc.date.available2014-09-29T16:48:57Z
dc.date.issued2003
dc.identifier.urihttp://hdl.handle.net/10945/43392
dc.description.abstractTruncation error and hydrostatic inconsistency at steep topography are two concerns in sigma coordinate ocean models due to the horizontal pressure gradient being difference of two large terms. A consensus is reached in the ocean modeling community on the first concern (truncation error), but not on the second concern (hydrostatic inconsistency). Since the integration of the pressure gradient over a finite volume equals the integration of the pressure over the surface of that volume (always dynamically consistent), dynamical analysis on finite volumes is used to determine the hydrostatic consistency of a sigma coordinate ocean model. A discrete, hydrostatically consistent scheme is obtained for the sigma coordinate ocean models. Comparison between finite-volume and finite-difference approaches leads to the conclusion that a Boussinesq, hydrostatic, sigma coordinate ocean model with second-order staggered scheme is always hydrostatically consistent. Guidance for improving numerical accuracy is also provided.en_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, may not be copyrighted.en_US
dc.titleHydrostatic Consistency in Sigma Coordinate Ocean Modelsen_US
dc.typeArticleen_US
dc.contributor.corporateNaval Ocean Analysis and Prediction Laboratory
dc.contributor.departmentOceanography


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