GCAM 5.3

New features include:

• Update final calibration year to 2015
• GCAM has been renamed to the "Global Change Analysis Model".
• Livestock trade has been updated to use an Armington-style approach, instead of fixing trade at historic values.
• A number of bug fixes (e.g., a correction to the MAC technical change) and minor enhancements (e.g., adding the stop-year capability)

GCAM 5.2

New features include:

• Regional agriculture Markets
• Resource - Reserve approach for fossil resource production
• Constraining water markets
• GCAM-USA overhaul
• Bug fixes
• Near-term emissions trend updates

Please see the documentation on Getting started running GCAM for more information on getting started running GCAM. For most users they can download the Mac or Windows Release Package which contain everything they need to run the model and query results. Users who need to compile the model or change the XML input files should consult the documentation.

GCAM 5.1.3

Bugfix re-release of GCAM 5.1 including the fixes:

• Compatibility with the latest readr and dplyr R packages
• Prevent shifting results when supply / demand curves are enabled
• Fix not properly parsing of some variables which may be needed in the future
• Fix linear-control function to ensure the proper coefficients are being used

GCAM 5.1.2

GCAM 5.1.2 addresses some issues with GCAM 5.1 including small bugs as well as significantly reduces memory requirements. All users running GCAM 5.1 are encouraged to update to this release.

GCAM version 5.1.1

Bugfix re-release of GCAM 5.1 including the fixes:

• Ensure proper model behavior when compiled with GCC 7+

GCAM version 4.4.1

Bugfix re-release of GCAM 4.4 including the fixes:

• Ensure proper model behavior when compiled with GCC 7+
• Various Model Interface bug fixes / support for Java 9+

GCAM version 5.1

New features include:

• Water demands
• Agricultural Intensification
• New land regions
• SSPs
• Hector 2.0
• New data system

Please see the documentation on Getting started running GCAM for more information on getting started running GCAM. For most users they can download the Mac or Windows Release Package which contain everything they need to run the model and query results. Users who need to compile the model or change the XML input files should consult the documentation. Warning: GCAM 5.1 uses significantly more memory, 8-14 GB depending on the configuration.

GCAM version 4.4

GCAM version 4.4

• Non-CO2 features and markets
• BECCS supply & demand updates
• New API for GCAM coupling
• Updated agricultural commodity prices and production costs
• Reduced carbon contents for managed forest & pasture
• Upgrade BaseX version
• Various bug fixes

Please see the documentation on Getting started running GCAM for more information on getting started running GCAM. For most users they can download the Mac or Windows Release Package which contain everything they need to run the model and query results. For users who need to compile the model or change the XML input files should consult the documentation.

GCAM version 4.3

GCAM Version 4.3

• Hector now default climate model
• Near-term population and GDP adjusted to match IMF projections for
  all included scenarios.
• Users can now configure GCAM to save only the results they plan to
  use.
• Updates to electricity and liquid fuel sector costs, reflecting
  recent literature.
• Various performance enhancements.
• Various minor bug fixes.

Please see the documentation on Getting started running GCAM for more information on which of the following packages you may require.

GCAM version 4.2.0

gcam-v4.2

GCAM release version 4.2