Coupled Magnetosphere Ionosphere Thermosphere Model (CMIT)
The Coupled Magnetosphere Ionosphere Thermosphere (CMIT) model consists of the Lyon-Fedder-Mobarry (LFM) model of the magnetosphere coupled to the Thermosphere-Ionosphere-Electrodynamics General Circulation Model (TIE-GCM). Together, these provide a comprehensive description of the response of the geospace system to variations in the solar wind and the interplanetary magnetic field.
MODEL COUPLING DIAGRAM
CMIT makes use of the following models:
- LFM—magnetosphere solver for the ideal MHD equations
- RCM -Rice Convection Model
- TIEGCM—Thermosphere & Ionosphere solver
Coupled Magnetosphere Ionosphere Thermosphere (CMIT) model diagram showing how the LFM Magnetosphere model is coupled with the TIEGCM Thermosphere model.
CMIT version 1.0 uses an OpenMP version of the LFM for parallelism on multicore systems. CMIT version 2.0 is in active development using an MPI version of the LFM for message passing on a variety of multiprocessor supercomputers.
PUBLICATIONS
Lyon, J G, J A Fedder and C M Mobarry, "The Lyon-Fedder-Mobarry (LFM) global MHD magnetosphere simulation code", J. Atmos. Solar-Terr. Phys., 66/15-16, 1333-1350, doi:10.1016/j.jastp.2004.03.020, 2004.
Wiltberger, M., Wang, W., Burns, A.G., Solomon, S.C., Lyon, J.G., Goodrich, C.C. "Initial results from the coupled magnetosphere ionosphere thermosphere model: Magnetospheric and ionospheric responses", J. Atmos. Solar-Terr. Phys., 66/15-16, 1411-1424.
Goodrich, C.C., A.L. Sussman, J.G. Lyon, M. Shay and P. Cassak, "The CISM Code Coupling Strategy", J. Atmos. Solar-Terr. Phys., 66/15-16, 1469, 2004.
Luhmann, J.G., S.C. Solomon, J.A. Linker, J.G. Lyon, Z. Mikic, D. Odstrcil, W. Wang and M. Wiltberger, "Coupled model simulation of a Sun-to-Earth space weather event", J. of Atm. Sol-Terr. Phys., 66, 1243, 2004.
Wang, W., M. Wiltberger, A.G. Burns, S.C. Solomon, T.L. Killeen, N. Maruyama, and J.G. Lyon, "Initial Results from the Coupled Magnetosphere-Ionosphere-Thermosphere Model: Thermosphere-Ionosphere Responses", J. Atmos. Solar-Terr. Phys., 66/15-16, 1425, 2004.
Toffoletto, F.R., S. Sazykin, R.W. Spiro, R.A. Wolf and J.G. Lyon, "RCM Meets LFM: Initial Results of One-Way Coupling", J. Atmos. Solar-Terr. Phys., 66/15-16, 1361, 200.