The World Induced Technical Change Hybrid model is used and produced by the division CIP (Climate Impacts and Policies. An Economic Assessment), within the macroactivity “Energy and Emission Long Term Scenarios and Mitigation Policies”.
WITCH (World Induced Technical Change Hybrid model) is one of the main modelling tools developed within the FEEM Research Programme “Sustainable Development” and designed to assist in the study of the socio-economic dimension of climate change.
The model has been developed with the aim of studying mitigation and adaptation policies for climate change control. It is currently applied to generate emission scenarios for various international macro-regions, and to evaluate the economic implications of national and international climate agreements, such as Post-Kyoto treaties. The model results have been used in various projects funded by international organizations, as well as governmental agencies and private institutions.
WITCH is a Regional Integrated Assessment Hard-Link Hybrid Model. Its top-down component consists of an intertemporal optimal growth model in which the energy input of the aggregate production function has been expanded to give a bottom-up like description of the energy sector. World countries are grouped in twelve regions that strategically interact following a game theoretic structure. The climate system is described by a climate module and a damage function provide the feedback on the economy of carbon dioxide emissions into the atmosphere. The dynamic and strategic features of the model, the energy sector specification and the technical change options make WITCH an especially suited tool to explicitly analyze the climate change issue, marked by medium term investment choices and long term economic dynamics and environmental responses.
To contact the researchers working on WITCH please write an email to firstname.lastname@example.org.
- RP0007 - The WITCH Model. Structure, Baseline, Solutions.
- RP0036 – Abatement Cost Uncertainty and Policy Instrument Selection under a Stringent Climate Policy. A Dynamic Analysis
- RP0063 – The Role of R&D and Technology Diffusion in Climate Change Mitigation: New Perspectives Using the Witch Model
- RP0067 – The 2008 WITCH model: new model features and baseline
- RP0069 – Towards a better understanding of disparities in scenarios of decarbonization : sectorally explicit results from the RECIPE project
- RP0085 - Alternative paths toward a low carbon world
- RP0101 - The optimal climate policy portfolio when knowledge spills across sectors
- RP0104 - Beyond Copenhagen: a realistic climate policy in a fragmented world
- RP0106 - A tale of two countries: emissions scenarios for China and India
- RP0108 - Super-Grids and Concentrated Solar Power: a scenario analysis with the WITCH model
- RP0111 - Sustainable Cooperation in Global Climate Policy: Specific Formulas and Emission Targets to Build on Copenhagen and Cancun
- RP0112 - Adaptation Can Help Mitigation: An Integrated Approach to Post-2012 Climate Policy
- RP0124 - Incentives and stability of international climate coalitions: an integrated assessment
- RP0153 - Innovation Benefits from Nuclear PhaseOut: Can They Compensate the Costs?
- RP0154 - The role of energy technologies in achieving climate policies: updates of the WITCH model
- RP0155 - Modelling biomass with CCS in the WITCH model
- CALDAM-ENV Link - Calibration of projected climate change damages in ENV-Linkages
- HEXE - Opening the economy-climate modelling box to decision-makers
- Technology innovation and diffusion in “less than ideal” climate policies: An assessment with the WITCH model