Global Applied General Equilibrium Analysis using the GTAP Framework by Thomas W. Hertel1 Contributed Chapter for the Handbook of Computable General Equilibrium Modeling, Peter B. Dixon and Dale W. Jorgenson (eds) Elsvier Publishers GTAP Working Paper No. 66 2012 1 Distinguished Professor and Executive Director, Center for Global Trade Analysis, Purdue University, 563 Krannert Building, West Lafayette, IN 47907-1145. Email:
[email protected] . The author acknowledges valuable comments from Amer Ahmed, Antoine Bouët, Peter Dixon, Joseph Francois, Kenichi Kawasaki, Robert Koopman, Sebastien Jean, Patrick Jomini, David Laborde, Sergey Paltsev, John Reilly, Sally Thompson, Marinos Tsigas and Terrie Walmsley. GLOBAL APPLIED GENERAL EQUILIBRIUM ANALYSIS USING THE GTAP FRAMEWORK Abstract Handbook of Computable General Equilibrium Modeling This chapter provides an overview of the first two decades of the Global Trade Analysis Project (GTAP) – an effort to support a standardized data base and CGE modeling platform for international economic analysis. It characterizes GTAP in four different dimensions: institutional innovation, a network, a database and a standardized modeling platform. Guiding principles for the GTAP modeling framework include flexibility, ease of use, transparency, and symmetric treatment of production and utility fundamentals across regions. The chapter reviews core modeling assumptions relating to the regional household, private consumption behavior, welfare decomposition, the “global bank”, treatment of the international trade and transport sector, and imports. Model validation and sensitivity analysis, as well as software issues receive attention as well. The chapter also offers brief overviews of the two major areas of application: international economic integration and global environmental issues. It closes with a discussion of future directions for the Project.