Version 8.5 of CC Options is now available - December 2003.
If you have Microsoft Excel (v5 or later) you can explore yourself the effect
of changing the parameters of GCI's model of "Contraction and Convergence" and
create graphics of the results, of the global emissions budgets and of the allocations
for any one country, and of projections of future atmospheric CO2 concentrations,
global mean temperature rises and damage costs.
In the downloaded package (a zip file) you will get 6 files:
The Excel workbook itself (cc8_6.xls or
cc8_6.xls -see below)
This contains the graphics, the data, the changeable parameters and many
embedded explanatory notes.
You can choose either the 9-regions version
or the complete 200 countries version of the model.
The 200 countries version is a large package (5MB) because it has full computations
for all the countries. The nine-regions model (2MB) contains basic data for
all the countries but carries out computations only on the regions, and when
parameters are changed the recalculation will be much faster.
One of the new features of v8 is a facility for the users to redefine regions,
this feature works on the small as well as the large model.
It is recommended that initially you experiment with the 9-regions version.
These files are compressed zip files, which can be decompressed with several widely available products, including free software from PowerArchiver.
We welcome any comments or suggestions for improving the model.
Please see the contact information on the
GCI home page