Global Trade Analysis Project (GTAP)The Global Trade Analysis Project (GTAP) is a global network of researchers and policy makers conducting quantitative analysis of international policy issues. GTAP is coordinated by the Center for Global Trade Analysis in Purdue University's Department of Agricultural Economics.
Call for GTAP Research Fellow Nominations
At each Annual Conference on Global Economic Analysis, new GTAP Research Fellows are named in recognition of their significant contributions to the development of GTAP through:
Nominations are now being accepted from GTAP Network members who, in the past five years, have contributed to the GTAP Data Base, and/or presented a paper at the annual conference. If you fit this criteria and are aware of anyone who has made significant contributions in the areas detailed above, we encourage you to nominate them for consideration for the 2015-2018 GTAP Research Fellow term.
*GTAP Staff, GTAP Advisory Board Representatives, current GTAP Research Fellows and GTAP Research Fellow Hall of Fame inductees are not eligible for nomination.
GTAP Technical Paper
by Dixon, Peter, Michael Jerie and Maureen Rimmer
This paper is for CGE modelers and others interested in modern trade theory. The Armington specification of trade, assuming country-level product differentiation, has been central to CGE modelling for 40 years. Starting in the 1980s with Krugman and more recently Melitz, trade theorists have preferred specifications with firm-level product differentiation. We draw out the connections between the Armington, Krugman and Melitz models, deriving them as successively less restrictive special cases of an encompassing model. We then investigate optimality properties of the Melitz model, demonstrating that a Melitz general equilibrium is the solution to a global, cost-minimizing problem. This suggests that envelope theorems can be used in interpreting results from a Melitz model. Next we explain the Balistreri-Rutherford decomposition in which a Melitz general equilibrium model is broken into Melitz sectoral models combined with an Armington general equilibrium model. Balistreri and Rutherford see their decomposition as a basis of an iterative approach for solving Melitz general equilibrium models. We see it as a means for interpreting Melitz results as the outcome of an Armington simulation with additional shocks to productivity and preferences variables. Details
GTAP Technical Paper No. 36
GTAP in the News
Studies, stories and more by GTAP Network members using GTAP data.
World Bank reports on regional crises
The World Bank has recently completed two studies on the economic impacts of regional crises partially relying on the use of GTAP-based CGE models.
The first study is a World Bank working paper on the "Economic effects of the Syrian war and the spread of the Islamic state on the Levant" by Dr. Elena Ianchovichina and Dr. Maros Ivanic that was cited by the Financial Times, the Wall Street Journal, Associated Press and Reuters as well as broadly cited in the local press and media. The authors’ op-ed was also published by Al Jazeera.
A second study focuses on The Economic impact of the 2014 Ebola epidemic: short and medium term estimates for West Africa, which was similarly cited by the Financial Times.
The Center is always interested to learn when GTAP-based analysis is recognized on a platform, such as the piece(s) above. If you have similar items you wish to share with the Center and broader GTAP community, please feel free to email them to Ginger Batta.
AnnouncementsSubmit announcements to firstname.lastname@example.org.
GTAP SupportGTAP Network members in need of technical support are encouraged to use the following avenues to request assistance. General, non-technical inquiries may be addressed to contactgtappurdue.edu.