This model is maintained and provided for free by the NASA Goddard Institute for Space Studies (GISS), at Columbia University in New York City. While I was excited to find something this useful, I was disappointed to discover that the model's source is a combination of Fortran, Perl, and Unix shell scripts.
This is one of the models used by James Hansen and his associates.
|On their pages, the model name is written without the dash - ModelE -
which places the L and E close together. Because I think that
this is difficult to read, I added the dash.
GCM - General Circulation Model
Running the Model
Unfortunately, this model requires about 60 minutes (1.5 hours without the -O2 optimization flag) for each month simulated. (This is way too slow to be useful to me.)
After running 10.5 hours (7 months of simulation), the model crashed on some bad data.
After I recompiled with the -O2 switch, the model ran for 57 minutes (simulating about 28 days) before it crashed with the following
Program terminated due to the following reason: >> In Radia: Q<0 <<
Interpreting the results
I have not found any descriptions of either the input or output data formats, nor have I found software to analyze the results.
I am open to suggestions.
The model still crashes using the provided data - I don't know why.
I had wanted to try a few ideas and see what effect they might have.