Numerical Weather Prediction:An Overview

Table of Contents

Numerical Weather Prediction:An Overview

What is Numerical Weather Prediction?

A Brief History

NWP System

PPT Slide

Components of an NWP model

Notable Trends

Trends - continued

Computing trends

Hierarchy of models

Governing Equations

Key Conservation Principles

Prognostic variables

Vertical Representation

Map projections: Why?

Numerical Methods

Time-integration schemes

Numerics: Important considerations

Eulerian or Semi-Lagrangian?

Eulerian vs. S-L methods - contd

Staggered Meshes

PPT Slide

Boundary Conditions

Model Physics

Model Performance

Sources of error in NWP

Sources of Errors - continued

PPT Slide

Galerkin Method - Series Expansion Method

Spectral Methods

Spectral Model - continued

Spectral Basis Functions

Spectral Truncation

Triangular Truncation

Triangular Truncation

Triangular Truncation

PPT Slide

Rhomboidal Truncation

Rhomboidal Truncation

Gaussian Grid

PPT Slide

PPT Slide

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