A Conserved Minimal Adjustment Scheme for Stabilization of Hydrographic Profiles

Abstract

Ocean (T, S) data analysis/assimilation, conducted in the three-dimensional physical space, is a generalized average of purely observed data (data analysis) or of modeled/observed data (data assimilation). Because of the high nonlinearity of the equation of the state of the seawater and nonuniform vertical distribution of the observational profile data, false static instability may be generated. A new analytical conserved adjustment scheme has been developed on the base of conservation of heat, salt, and static stability for the whole water column with predetermined (T, S) adjustment ratios. A set of well-posed combined linear and nonlinear algebraic equations has been established and is solved using Newton's method. This new scheme can be used for ocean hydrographic data analysis and data assimilation.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2010
Accession Number
ADA535041

Entities

People

  • Chenwu Fan
  • Peter Cheng Chu

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Abstracts
  • Assimilation
  • Climate Change
  • Data Analysis
  • Equations
  • Grids
  • Instability
  • Jet Propulsion
  • Nonlinear Algebraic Equations
  • Nonuniform
  • Oceanography
  • Oceans
  • Sea Water
  • Three Dimensional

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Ocean-Atmosphere Mesoscale Modeling, Data Assimilation, and Flux Boundary Layers
  • Oceanography.

Technology Areas

  • Space