h1. LFM-TIEGCM-RCM (LTR)

The LFM is a global MHD model written by John *L{*}yon, Joel *F{*}edder and Clark *M{*}obarry.  It is primarily used to better understand Earth's Magnetosphere.  The LFM can be coupled with a variety of models to aide in understanding of the physical processes in Geospace , such as:
* Magnetosphere Ionosphere Coupler/Solver ([LTR:MIX])
* Thermosphere Ionosphere Electrodynamic General Circulation Model ([TIEGCM|http://www.hao.ucar.edu/modeling/tgcm/])
* Rice Convection Model ([LTR:RCM])
The coupled combination of models is called the LTR (LFM-TIEGCM-RCM).

The documentation on this wiki contains limited scientific descriptions of the models.  It is intended as a guide to compile & execute the code(s) and documents some of the post-processing tools which have been developed for LTR.

{info:title=Note}The LTR models and documentation are constantly evolving. This wiki documents the latest release. In some cases, this includes documentation for unreleased/upcoming features. You should sign up to [the LTR-announce mailing list|http://mailman.ucar.edu/mailman/listinfo/ltr-announce] and make sure you're using the [latest release|https://wiki.ucar.edu/display/LTR/Download+LTR]. You can find a list of upcoming features via [the LTR roadmap|https://oberon.bu.edu/bugs/projects/roadmap/ltr-para].{info}

h2. Scientific Documentation

* The October-November 2004 [Journal of Atmospheric and Solar-Terrestrial Physics|http://www.elsevier.com/locate/jastp] special issue: [Towards an Integrated Model of the Space Weather System|http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VHB-4D16Y7G-1&_user=1518228&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000053462&_version=1&_urlVersion=0&_userid=1518228&md5=9ae556832ed29648528e9df66ba677e6] (i.e. [Lyon 2004|http://scholar.google.com/scholar?hl=en&lr=&client=firefox-a&q=2004+"The+Lyon-Fedder-Mobarry+(LFM)+global+MHD+magnetospheric+simulation+code"&btnG=Search]).
* The publications and presentations listed at the [BU CISM website|http://www.bu.edu/cism/Publications/publicationslist.html]
* [LFM Field Aligned Current calculation|http://download.hao.ucar.edu/pub/schmitt/cism/documentation/MIX/jpara.pdf] \- Notes on the LFM inner boundary conditions.  Gives insight into the calculation of {latex}$J_{\parallel}${latex}, which is sent to [LTR:MIX].
* 2010 Merkin, & Lyon [Effects of the low-latitude ionospheric boundary condition on the global magnetosphere|http://adsabs.harvard.edu/abs/2010JGRA..11510202M]

h1. Acknowledgements

This material is based upon work supported by CISM which is funded by the STC Program of the National Science Foundation under Agreement Number ATM-0120950.  The National Center for Atmospheric Research is sponsored by the National Science Foundation.