Structure of GTAP

Abstract

are evaluated at market prices and face no further (border) taxes. Similarly, since domestic sales do not cross a border, they do not face such taxes either. In order to convert exports to fob values, it is necessary to add the export tax, denoted XTAX(i,r,s). Note that these taxes are written in a form that is destination destination/source-specific trade policy measures at the level of disaggregated regions and commodities (this varies by type of policy intervention), once the data base has been aggregated over either commodities or regions, bilateral rates of taxation will vary due to compositional differences. Therefore, it is important to maintain this bilateral detail in the modeling framework.

Trade and the greenhouse gas emissions from international freight transport

“…Critically for our purposes the GTAP database contains detailed information on energy usage and greenhouse gas emissions. A highly detailed description of this model can be found in Hertel and Tsigas (1997). We briefly summarize key characteristics here.…”

Applying Modeling to Improve Health and Economic Policy Decisions in the Americas

“…Standard GTAP (Hertel & Tsigas, 1997) is a comparative-static AGE model of the world economy, developed as a vehicle for teaching multi-country AGE modeling and to complement the GTAP multi-country AGE database (Gehlhar et al, 1997). It provides basic AGE modeling techniques that include some special features, notably an extensive decomposition of welfare results.…”

Revisiting Armington and AIDS: How Sensitive Simulated Pattern of Trade is to Functional Form Choices?

“…A number of studies have criticized the Armington specification on the basis of its restrictiveness and homothetic nature of the CES-based functional form [1,2]. Other studies have suggested that Deaton and Muellbauer's AIDS specification could be a preferable alternative to the Armington specification [3][4][5][6]. The AIDS specification is a locally flexible functional form with a considerably richer parameterization than the CES-based Armington specification.…”