This paper provides an overview of the Global Trade Analysis Project (GTAP) Data Base and its latest release, version 9. The GTAP Data Base has been used in thousands of economy-wide analyses over the past twenty-five years. While initially focused on supporting trade policy analysis, the addition of satellite accounts pertaining to greenhouse gas emissions and land use has resulted in a surge of applications relating to climate change as well as other environmental issues. The Data Base comprises an exhaustive set of accounts measuring the value of annual flows of goods and services with regional and sectoral detail for the entire world economy. These flows include bilateral trade, transport, and protection matrices that link individual country/regional economic datasets. Version 9 disaggregates 140 regions, 57 sectors, 8 factors of production, for 3 base years (2004, 2007 and 2011). The great success enjoyed by this Data Base stems from the collaboration efforts by many parties interested in improving the quality of economic analysis of global policy issues related to trade, economic development, energy and the environment.

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This paper provides complete documentation for version 7 of the 'standard' Global Trade Analysis Project (GTAP) model. This is the first comprehensive documentation of the model since the 1997 'GTAP book' and this updated version includes some important new features. On a substantive level, commodities and activities are separated, allowing for multi-product sectors, as well as multiple sectors producing the same commodity. Additional flexibility is provided for modeling of production and consumption behavior, and the valuation and naming conventions have been modified. In addition, this paper folds in important advances since the 1997 publication, including the revised treatment of non-homotheticity in final demand, the welfare decomposition and multi-modal international transportation. The paper opens with an overview which puts this widely used model in broader context. The model exposition is comprehensive and includes a bridging table linking the original, 'classic' model with the current version. This is followed by a section discussing the major extensions of the standard model and how they are being used. The paper closes with an overall assessment and a discussion of future research directions.JEL codes: C68, D58, D60, F1

This paper documents the foreign asset ownership and investment theory of the dynamic GTAP model (GTAP-Dyn). The new investment theory offers a disequilibrium approach to modeling endogenously international capital mobility. It permits a recursive solution procedure, a feature that allows easy implementation of dynamics into any static AGE model without imposing limitations on the model's size. The method involves treating time as a variable, not as an index. Having time as a variable allows the construction of dynamic GTAP with minimum modification to the existing structure of GTAP, by separating the theory of static GTAP from the length of run. JEL classifications: D58

The increasing interest in dynamic models and in particular the development of the Dynamic GTAP model at the Center for Global Trade Analysis has highlighted the need for the development of a baseline scenario depicting how the world economy might be expected the change over the next 20 years. The purpose of this paper is to describe in detail the baseline scenario developed for the Dynamic GTAP model (Ianchovichina and McDougall, 2000) and the GTAP data base (Dimaranan and McDougall, 2005).In the dynamic GTAP model the policy experiment of interest is compared against a counterfactual baseline scenario. The baseline scenario should reflect as closely as possible the changes expected to occur in the world economy, excluding the particular policy of interest. In this baseline we examine the expected changes in macro economic variables such as the growth of real GDP, capital, skilled and unskilled labour etc.While there is a tendency in this paper to speak of the Dynamic GTAP baseline scenario, it should be understood that in practice each baseline is likely to be unique, incorporating those elements of a baseline which are most relevant to the actual policy question being examined.There are, however, certain key variables which form the basis of most baseline scenarios, it is with these variables that the focus of this paper lies. Despite the fact that baseline scenario's will differ, there are significant benefits to be gained, in terms of time-saved and comparability of results, from sharing a common set of forecasts for these variables.The paper may also refer to the baseline program. This is the program developed to calculate the growth rates of the macro variables and then aggregates these shocks for use with a GTAP data aggregation.

This paper analyzes the impact of continued rapid, growth in china on her trading partners using a multiregion, applied general equili,brium model. con_ trary to conuentional wisdom, we find that most deueloping countries benefit from china's growth. Product dffirentiation plays a key role in this flnding. systematic analysis of these welfare gains shows that, as exfected,, simple terms of trade calculations based on net trade positions and aaerage world price changes Predict a loss for the deueloping countries. Howeaer, with the exceptions of south Asia and rhailand, this /oss l's oaershadowed, by a positiue rnnue_

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