The Jacchia-Bowman 2008 Empirical Thermospheric Density Model
(http://sol.spacenvironment.net/jb2008/index.html)

FORTRAN source code can be downloaded at:
http://sol.spacenvironment.net/jb2008/code.html

Improved versions of JB2008 solar indices (SOLFSMY.TXT) and
geomagnetic storm indices (DTCFILE.TXT) are used as input.

Both indices (SOLFSMY.TXT and DTCFILE.TXT) are updated daily and can be downloaded at:
http://sol.spacenvironment.net/jb2008/indices.html

