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Welcome to the SAMI2 Open Source Project

The purpose of this site is to freely distribute the NRL low- to mid-latitude ionosphere code SAMI2 (Sami2 is Another Model of the Ionosphere). It is hoped that the code will be used for research and education, and that the code can be improved through community feedback. The code was originally developed by Drs. J.D. Huba and G. Joyce; Dr. M. Swisdak has made a number of improvements and corrections.


J.D. Huba
Plasma Physics Division
Naval Research Laboratory
March, 2011




News


3/11: Release of sami2-1.00
  This release improves the SAMI2 model and corrects several problems in sami2-0.98. The changes are described in the file README-1.00 and here. The web site describes this version of SAMI2.
1/07: Release of sami2-0.98
  This release improves the SAMI2 model and corrects several problems in sami2-0.97. The changes are described in the file README-0.98 and here. The web site describes this version of SAMI2.
5/05: Release of sami2-0.97
  This release improves the SAMI2 model and corrects several problems in sami2-0.95a. The changes are described in the file README-0.97 and here. The web site describes this version of SAMI2.
5/03: Release of sami2-0.95a
  This release corrects several bugs in sami2-0.95. The changes are described in the file README-0.95a and here. The bugs are relatively minor and do not signficantly change results obtained from sami2-0.95. In addition, we point out that sami2-0.95a can be compiled with recent versions of g77 (above version 2.95). The web site describes this version of SAMI2.
4/02: Release of sami2-0.95
  This release has several improvements over sami2-0.90 and corrects a number of bugs. The main changes are the following:
  • The numbering of the ion species has been changed. This can potentially speed up the code by roughly 30% by reducing the number of ion species considered.
  • The data output method has been changed. This reduces the amount of memory used by the code.
  • The E x B drift velocity is a function of magnetic latitude; sami2-0.90 assumed (incorrectly) that the E x B drift velocity was constant along the geomagnetic field.
  • The code is now based on universal time (GMT).
  • Minor bugs in boundary conditions have been corrected.
6/01: Release of sami2-0.90