DICE Model Discussion
as of
January 1, 2009
The new DICE-2007 model is available
for public use. This following provides the DICE-2007
model, with a writeup, documentation, and model.
A. Papers and documentation:
B. Running the DICE model in a simplified version (version 2007.delta.8): The model is available without any "include" files, click here.
Note: This version contains the baseline (no control), the Hotelling, and the optimal run. Also note that you need to full version of the GAMS program; it will not run on the student edition of GAMS.
C. There is a beta EXCEL version of the (version 2007.delta.8b),
1. For an Excel 2007 version (.xlsx). click here. This has not been fully checked but is close to the DICE2007 described in B. Please report any problems to the author.
2. For an Excel 2003 version (.xls). click here. This was converted from the xlsx version and is a beta-beta that has not been checked.
Note: The EXCEL version contains both a baseline and an "optimal" run. If users change the parameters, the optimal can be resolved using the EXCEL Solver routine, or the Premium Platform Solver available commercially. Users should be warned that these are not always footproof.
D. Running the DICE model (DICE-2007.delta.v8)
with all the alternative runs (this is pretty complicated).
1.
You
can access the GAMS files in the directory
http://www.econ.yale.edu/~nordhaus/DICE2007_programs or click here.
2.
Copy
all the .gms files into a single directory.
3.
Note
that running the model requires definition files ("def_***.gms")
for each of the different runs that are included.
4.
The
"put*.gms" file is useful for reporting the output of the different runs.
5.
Start
a new GAMS project.
6.
Run
DICE_delta_v8_071707.GMS.
7.
You
may have to rename the directory structure so that the program will read and
write where you want it. If you get errors in running the program, that some
files cannot be found, this is likely to be the
reason. In this case, it may be necessary to rename the include statements to
point to the directory in which the programs are located.
E. Notes on the description of the
different runs, you should look at the background paper in A.1 above.