Spatial dimension - WITCH
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| Corresponding documentation | |
|---|---|
| Previous versions | |
| Model information | |
| Model link | |
| Institution | European Institute on Economics and the Environment (RFF-CMCC EIEE), Italy, http://www.eiee.org. |
| Solution concept | General equilibrium (closed economy) |
| Solution method | Optimization |
| Anticipation | |
Countries included within the model are grouped into 17 regions clustered by geography, income and the structure of energy demand.
The regional disaggregation is now flexible and the model can be run on different model configurations, typically from 5 to 17 regions, or more.
Figure 1.1: Regions of the WITCH model
The 17 regions are:
| Region | Countries |
|---|---|
| brazil | Brazil |
| canada | Canada |
| china | China, including Taiwan |
| europe | Europe |
| seasia | South East Asia |
| india | India |
| indonesia | Indonesia |
| jpnkor | Japan and South Korea |
| laca | Latin America and the Caribbean |
| mena | Middle East and North Africa |
| mexico | Mexico |
| oceania | Australia and New Zealand |
| sasia | South Asia |
| ssa | Sub Saharan Africa |
| southafrica | South Africa |
| te | Non-EU Eastern European countries, including Russia |
| usa | United States of America |
WITCH features any regional aggregations in the so-called coalitions. Some common coalitions are:
- regional coalitions : each region is mapped to a coalition containing only this region.
- world coalition : a coalition containing all the world regions.
Coalitions and regions interact with each others because of the presence of economic (technology, exhaustible natural resources) and environmental global externalities.