This directory contains the Bitz and Lipscomb (1999) single-column,
thermodynamic sea ice model, sometimes called the "Energy Conserving
Sea-Ice Model". It is ported from FORTRAN77 into MATLAB. 

The model is composed of 10 MATLAB scripts and one data file. The
individual files may be downloaded from the directory:
http://www.atmos.washington.edu/~bitz/column/
or in one tarfile from
http://www.atmos.washington.edu/~bitz/column.tar
(untar by typing "tar xvf column.tar").

The atmospheric forcing is from Fletcher as tabulated by Maykut and
Untersteiner (1971). The surface albedo is 0.63 for bare ice, 0.75 for
wet snow, and 0.80 for dry snow.

To familiarize yourself with the model, run it once with the default
parameters and forcings by typing "column;" in the MATLAB command
window. Don't forget the semicolon at the end of the command. When it
is finished, type "help column" in the same window to learn how to
vary the model options. 

The download directory also includes a pdf of the exercises I wrote
for the 2007 Internation Sea Ice Summerschool and a copy of the Bitz
and Lipscomb manuscript. I would appreciate your feedback on these
exercises and the model.

Cecilia Bitz
8 August 2007

Bitz, C.M., and W.H. Lipscomb, 1999: An energy-conserving
thermodynamic model of sea ice, J. Geophys. Res., 104, 15,669-15,677.

Maykut, G.A. and N. Untersteiner, 1971: Some Results from a
Time-dependent Thermodynamic Model of Sea Ice, J. Geophys. Res., 76,
1,550-1,575.