Toward Accurate Coastal Ocean Prediction

Abstract

Several major problems, namely, uncertain surface forcing function, unknown open boundary conditions (OBC), and pressure gradient error using the acoordinate, affect the accuracy of coastal ocean prediction. At open lateral boundaries where the numerical grid ends, the fluid motion should be unrestricted. Ideal open boundaries are transparent to motions. The most popular and successful scheme is the adjoint method. The disadvantages that may restrict its use are ocean-model dependency and difficulty in deriving the adjoint equation when the model contains rapid (discontinuous) processes, such as change of ocean mixed layer from entrainment to shallowing regime. Development of a ocean-model independent algorithm for determining the OBC becomes urgent.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Nov 28, 2000
Accession Number
ADA479923

Entities

People

  • Peter Cheng Chu

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Algorithms
  • Boundaries
  • Data Sets
  • Equations
  • Errors
  • Fourier Analysis
  • Grids
  • Information Operations
  • Linear Algebraic Equations
  • Military Research
  • Oceans
  • Pressure Gradients
  • Seamounts
  • South China Sea
  • Surface Temperature
  • Topography
  • Tropical Cyclones

Readers

  • Computational Fluid Dynamics (CFD)
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Systems Analysis and Design