IMAGE framework: Difference between revisions
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Another reason for differences between IAM models is their history. Many have evolved from technical process models of energy systems to cover environmental issues, such as air pollution and more frequently also climatic change. Technical process models describe the physical flows of energy from primary resources through conversion processes, and transport and distribution networks to meet specific demands for energy carriers or energy services. The costs associated with the various components are tracked, and relative costs of competing technologies and supply chains determine market share. In fact, one example embedded in the IMAGE framework is the TIMER energy model (Component [[Energy supply and demand]]). | Another reason for differences between IAM models is their history. Many have evolved from technical process models of energy systems to cover environmental issues, such as air pollution and more frequently also climatic change. Technical process models describe the physical flows of energy from primary resources through conversion processes, and transport and distribution networks to meet specific demands for energy carriers or energy services. The costs associated with the various components are tracked, and relative costs of competing technologies and supply chains determine market share. In fact, one example embedded in the IMAGE framework is the TIMER energy model (Component [[Energy supply and demand]]). | ||
Other IAMs have their roots in economics and have evolved from models assessing the production of economic outputs to contribute to consumer utility by allocating input factors, such as capital, labour and increasingly also energy, materials and natural resources. Substitution between sectors, inputs and commodities produced depends on their relative prices, taking into account policy interventions, such as taxes and subsidies, import regulations and other market and non-market instruments. Economic models include the OECD model [[ENV-Linkages model| ENV-Linkages]] and the model [[MAGNET model]]. The latter has been integrated into IMAGE 3.0 (see Component [[Agricultural economy | Other IAMs have their roots in economics and have evolved from models assessing the production of economic outputs to contribute to consumer utility by allocating input factors, such as capital, labour and increasingly also energy, materials and natural resources. Substitution between sectors, inputs and commodities produced depends on their relative prices, taking into account policy interventions, such as taxes and subsidies, import regulations and other market and non-market instruments. Economic models include the OECD model [[ENV-Linkages model| ENV-Linkages]] and the model [[MAGNET model]]. The latter has been integrated into IMAGE 3.0 (see Component [[Agricultural economy]]). | ||
While economic models account for consistency between economic sectors, these models tend to treat the economy in terms of material flows, biochemical, physical and ecological processes in a stylised way, which limits their capacity to capture feedback mechanisms of the natural system. | While economic models account for consistency between economic sectors, these models tend to treat the economy in terms of material flows, biochemical, physical and ecological processes in a stylised way, which limits their capacity to capture feedback mechanisms of the natural system. | ||
Revision as of 18:28, 16 May 2014
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