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GTAP Resource #2727

"Assessing the Impacts of Agricultural Policies on the Global, National and Farm level - A Survey of Model Systems"
by Brockmeier, Martina and Kirsten Boysen-Urban

General and partial equilibrium models are the preferred choice of framework in the analysis of agricultural policies, particularly the WTO negotiations. These models have developed at an astonishing pace in the last thirty years. Three decades ago researchers rightly presented simple spread sheet models established on restricted data bases as the state of the art. Fast advancing computer technology and software thereafter quickly enabled the development of comprehensive models which are based on faster software platforms. Today global multi re-gion general or partial equilibrium models covering surprisingly detailed regional and sectoral information have become common fixtures in the analysis of WTO negotiations.
However, this is certainly not the end of the rope as there is no "one size fits all" model to completely handle WTO issues. Rather some models are perfectly fitted for one question (e.g., How does trade develop after the WTO round?), but do not contribute much to answer others (e.g., Does this reduce the number of farms in Germany?). Furthermore, the scientific community and other clients, particularly policy makers, increasingly ask for results on the WTO negotiations which are not only as detailed as possible, but additionally are also consistent over the global, sectoral and farm level. Accordingly, it is obvious to link models that deliver results consistently disaggregated to various levels and thereby offset each others drawbacks.
Given this background the goal of our paper is to explore the use of model chains with the help of a literature overview that comprises the combination of macro and micro models Here, we concentrate on systems that group different models to disaggregate the supply side of the agricultural sector. Additionally, we identify the challenges and pitfalls we have to face by combining these models.

Resource Details (Export Citation) GTAP Keywords
Category: 2008 Conference Paper
Status: Published
By/In: Presented at the 11th Annual Conference on Global Economic Analysis, Helsinki, Finland
Date: 2008
Created: Boysen-Urban, K. (4/15/2008)
Updated: Boysen-Urban, K. (6/4/2008)
Visits: 3,156
No keywords have been specified.

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