The Thermospheric General Circulation Models (TGCM's)

The High Altitude Observatory at the National Center for Atmospheric Research has developed a series of numeric simulation models of the Earth's upper atmosphere, including the upper Stratosphere, Mesosphere, and Thermosphere. The Thermospheric General Circulation Models (TGCM's) are three-dimensional, time-dependent models of the EARTH's neutral upper atmosphere. The models use a finite differencing technique to obtain a self-consistent solution for the coupled, nonlinear equations of hydrodynamics, thermodynamics, continuity of the neutral gas and for the coupling between the dynamics and the composition.

For full informaiton about the dataset and the associated project, please visit:

To Access Resource:

Questions? Email Resource Support Contact:

  • TGCM Group
    UCAR/NCAR - High Altitude Observatory


Resource Type model
Temporal Range Begin N/A
Temporal Range End N/A
Temporal Resolution N/A
Bounding Box North Lat N/A
Bounding Box South Lat N/A
Bounding Box West Long N/A
Bounding Box East Long N/A
Spatial Representation N/A
Spatial Resolution N/A
Related Links

TIEGCM User's Guide : Detailed information on usage and structure of the model and related downloads, including source code, job scripts, and post-processing and visualization tools.

Draft TIEGCM V1.94 Model Description : This documentation presents the governing equations, physical parameterizations and numerical algorithms used in the NCAR Thermosphere Ionosphere Electrodynamics GCM (TIE-GCM) version 1.94. The model description provides help on the major model component, numerics and coding implementation.

Intro to Processors : Information about visualization tools that are used as post-processors developed at the High Altitude Observatory.

Publications - Principal Papers : Principal Development References for NCAR Thermosphere-Ionosphere Models

Presentations : Related presentations for NCAR Thermosphere-Ionosphere Models

Additional Information

From the TGCM's home page, additional information can be found regarding announcements, simulations, research highlights, references, bibliography of papers using NCAR Thermosphere-Ionosphere Modelsand, and other related models (e.g. the Thermosphere Ionosphere Mesosphere Electrodynamic General Circulation Model or TIME-GCM, Globel Mean, and the Whole Atmosphere Community Climate Model with thermosphere and ionosphere extension or WACCM-X).

Resource Format NETCDF
Standardized Resource Format NetCDF
Asset Size N/A
Legal Constraints

Access Constraints Registration on the HAO web site is a requirement for access to the data.
Software Implementation Language N/A

Resource Support Name TGCM Group
Resource Support Email
Resource Support Organization UCAR/NCAR - High Altitude Observatory
Distributor UCAR/NCAR - High Altitude Observatory - Atmosphere Ionosphere Magnetosphere (AIM) Section
Metadata Contact Name Stan Solomon
Metadata Contact Email
Metadata Contact Organization UCAR/NCAR - High Altitude Observatory

Author Roble, Ray
Publisher UCAR/NCAR - High Altitude Observatory
Publication Date 2006-01-10
Digital Object Identifier (DOI) Not Assigned
Alternate Identifier TIEGCM
Resource Version 2.0
Topic Category N/A
Progress completed
Metadata Date 2023-02-28T11:36:07
Metadata Record Identifier 85bc17a5-4fc8-11e8-b0fa-b808cf582fd2
Metadata Language eng
Suggested Citation Roble, Ray . (2006). The Thermospheric General Circulation Models (TGCM's). 2.0. UCAR/NCAR - High Altitude Observatory. Accessed 07 December 2023.

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