GTAP Resources: Resource Display
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"The CAPRI model - an overview with a focus on comparison to GTAP " by Britz, Wolfgang and Roman Keeney Abstract CAPRI (Common Agricultural Policy Regional Impact) is an agricultural sector model aiming to analyse impacts of changes in EU (or international) agricultural policies on European agriculture and global agricultural commodity markets, typically for 8-10 years ahead. The economic core is a static, partial equilibrium model consisting of four interconnected modules: (1) 280 regional non-linear programming models for EU-27, Norway, Turkey & Western Balkans, (2) a global multi-commodity model for agricultural products, (3) a market model for young animals and, (4) a module handling in detail policy instruments of the Common Agricultural Policy. Each regional model maximises agricultural income at given prices and policy subject to constraints on land, feed and nutrient requirements, covering ~ 50 crop and animal activities. Allocation steering depends on a quadratic cost function, whose parameters are either estimated from time series analysis (Jansson 2007) or calibrated to exogenous elasticities. Different environmental indicators such as nitrogen balances or GHG emissions are calculated from the supply models’ results. The market module differentiates single countries such as the US or aggregates such as LDCs and covers all products of the supply side plus major secondary ones (dairy, cakes & oils). Based on the Armington assumption, it comprises (bilateral) tariffs, TRQs and subsidised exports. It applies flexible functional forms calibrated to elasticities from literature or other modelling systems. CAPRI is solved by sequential iteration of its modules. CAPRI has been expanded since 1999 while being regularly applied in impact assessments, based on its unique combination of regionalised supply models with a global multi-commodity model. Recently, CAPRI was coupled to a spatial down-scaling component for EU27 which estimate the distribution of crop shares, stocking densities and input use at 1x1 km resolution and derives from there different environmental variables. |
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- Domestic policy analysis - Agricultural policies - European Union |
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Public Access  2010 Conference Paper (96.7 KB) Replicated: 0 time(s)Restricted Access No documents have been attached. Special Instructions No instructions have been specified. |
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Last Modified: 9/15/2023 2:05:45 PM
