Thermosphere Ionosphere Electrodynamics General Circulation Model

Description - TIE-GCM

The NCAR Thermosphere-Ionosphere-Electrodynamics General Circulation Model (TIE-GCM) is a comprehensive, first-principles, three-dimensional, non-linear representation of the coupled thermosphere and ionosphere system that includes a self-consistent solution of the middle and low-latitude dynamo field.

The model solves the three-dimensional momentum, energy and continuity equations for neutral and ion species at each time step, using a semi-implicit, fourth-order, centered finite difference scheme on each pressure surface in a staggered vertical grid. It can be run in either serial or parallel mode on a variety of platforms, including Linux workstations and supercomputers. The time step is typically 120 s.

Contents

TIEGCM

• Introduction
  • Thermosphere Ionosphere Electrodynamics General Circulation Model
  • Functional Description - TIE-GCM
  • Grid Parameters
  • Strengths
  • Assumptions
  • Inputs
  • Outputs
  • Hardware and Software Requirements
• Release Notes for TIEGCM 3.0
  • Utility Tools
  • TIEGCMrun
  • TIEGCMpy
  • New Features and Functional Changes
  • Changes in Physics
• Environment Setup
  • Automatic
  • Manual (NCAR Derecho)
  • Manual (NASA Pleiades)
• Quickstart
  • Running Simulations
  • Usage
  • Subdirectories Created by Tiegcmrun
• Directory Structure
  • Working Directory
  • Model Directory
  • Data Directory
• Grid Structure and Resolution
  • Geographic 3d spatial coordinates at 5-degree resolution
  • Geographic 3d spatial coordinates at 2.5-degree resolution
  • Geographic 3d spatial coordinates at 1.25-degree resolution
  • Geographic 3d spatial coordinates at 0.625-degree resolution
  • Geographic 3d spatial coordinates at 1/2-scale height resolution
  • Geographic 3d spatial coordinates at 1/4-scale height resolution
  • Geographic 3d spatial coordinates at 1/8-scale height resolution
  • Geographic 3d spatial coordinates at 1/8-scale height resolution
  • Geomagnetic 3d spatial coordinates
  • Altitude Coordinates in the NCAR TIE-GCM and TIME-GCM
• Parameters
  • Model File Parameters
  • Model Specification Parameters
  • Input File Parameters
  • PBS Job Parameters
• Model Output History Files
  • NetCDF History Output Files
  • Compliance and File Types
  • Field Data Structure
• Saving Diagnostic Fields
• Model Source Code
  • Source Code Location
  • Academic License Agreement
  • Source Code Documentation
  • Modifying the Source Code
• Benchmark