Fortran code to convert between geographic and magnetic quasi-dipole, magnetic apex, and modified magnetic apex coordinate systems based on Van Zandt et al. (1972) and Richmond [1995]. The geomagnetic main field is the International Geomagnetic Reference Field (IGRF), for which Version 12 is described by Thébault et al. (2015).
The AMIE procedure is an optimally constrained, weighted least-squares fit of electric potential distribution to diverse types of atmospheric observations. Knowledge of these distributions is important in many areas of magnetospheric, ionospheric, and thermospheric physics.
A Whole Atmosphere Community Climate Model with thermosphere and ionosphere extension (WACCM-X) is a comprehensive numerical model, spanning the range of altitude from the Earth’s surface to the upper thermosphere. The development of the model is inter-divisional collaboration that unifies certain aspects of the upper atmospheric modeling of
HAO, the middle atmosphere modeling of
ACD, and the tropospheric modeling of
CGD, using the NCAR Community Earth System Model (
CESM) as a common numerical framework.
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.
DOCFM is an NCAR/CfA collaboration that is funded by AFOSR to model the global coronal magnetic field using magnetometric and other observations, with the goal of improving space weather forecasts of magnetic orientation within coronal mass ejections.
FORWARD is a suite of IDL and fortran codes that calculates simulated coronal polarization signals from numerical and analytical models of the corona. The images generated by the code are directly comparable to the
CoMP data and can be used as guidelines to look for specific magnetic morphologies in the observational data.
The GLobal airglOW model, also known as GLOW, is a toolkit of subroutines and driver programs for performing calculations of optical emissions in the thermosphere / ionosphere. GLOW calculates various spectral features for any combination of solar and/or auroral inputs, and is particularly designed for use with output from the NCAR thermosphere general circulation models.
The GSWM solves the linearized and extended Navier-Stokes equations for steady-state global temperature and wind perturbations. GSWM may be used to calculate an "unforced" planetary wave response for a specified period and zonal wavenumber, or the thermally-driven response for either a diurnal or semidiurnal atmospheric tide.
Researching space weather helps to advance our understanding of large-scale internal dynamics, magnetic flux creation and emergence, by linking solar interior global flows and localized active regions’ flows with short- and long-term solar magnetic variabilities, for forecasting/simulating reliable solar inputs to heliospheric and terrestrial models.
The NCAR TGCM's are three-dimensional, time-dependent models of the Earth's neutral upper atmosphere. The model uses 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.