Global Timber Model (GTM)
Impact/Purpose:
This model is designed to examine global timber supply and the associated carbon accounting.
Description:
GTM is an economic model capable of examining global forestry land-use, management, and trade responses to policies. In responding to a policy, the model captures afforestation, forest management, and avoided deforestation behavior. The model estimates harvests in industrial forests and inaccessible forests, timberland management intensity, and plantation establishment, all important components of both future timber supply and carbon flux. The model also captures global market interactions, global timber supply and the associated carbon accounting. It solves in 10 year increments and terminal conditions are imposed after 180 years. The Timber Supply Model (TSM) originated in 1990 and was updated in 1999 to include carbon accounting and renamed the Global Timber Model (GTM). The model has been updated over time and used in a variety of policy analyses.
Record Details:
Record Type:DOCUMENT
Product Published Date:12/31/2015
Record Last Revised:05/22/2014
OMB Category:Other
Record ID:
198002
Keywords:
Agriculture, Forestry, Greenhouse gases, land use, partial equilibrium, climate,
Model Detail:
Model Evaluation
:The model has been used in studies published in peer reviewed publications,
including:
Sohngen, B. and Segjo, R., 2000.”Potential Carbon Flux from Timber Harvests
and Management in the Context of a Global Timber Market.” Climatic Change 44,
151-172.
Model URL
:http://www.epa.gov/climatechange/economics/modeling.html
Model Decision Documents
:Sohngen, B. and Segjo, R., 2006. “Carbon Sequestration in Global Forests
Under Difference Carbon Price Regimes.” The Energy Journal, Special Issue on
Multi-Greenhouse Gas Mitigation and Climate Policy, 109-126.
Model Download Information
:A description of the TSM96 can be found at:
http://www.rff.org/Documents/RFF-DP-96-15.pdf
modelcontactinfo
:Steve Rose
Climate Change Division
Office of Air and Radiation
E-mail: rose.steven@epa.gov
Tel: (202) 343-9553
Model Inputs
:The data for this model come from the Global Timber Market and Forestry
Data Project. Data can be downloaded at:
http://www-agecon.ag.ohio-state.edu/people/sohngen.1/forests/GTM/table1.htm
Model Outputs
:Forestry stocks and carbon accounting.
Model Computer Requirements:
Model Operating Systems Needs
:Windows
Model Hardware Needs
:The model is run on a desktop computer.
Model Programming Language(s)
:GAMS