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Table 1 Illustrative example of a set of reduced SPAs (columns) defined by a collection of policy attributes (rows) SPAs. Those SPAs can be combined with an RCP forcing level and an SSP, although not all combinations can be expected to be consistent and yield a feasible scenario. In addition, it may be useful to consider a "no new policy" SPA that only contains existing climate policies until their time of expiration, assuming no new climate policies thereafter

From: A new scenario framework for climate change research: the concept of shared climate policy assumptions

Policy attribute Reference policy Cooperation & moderate adaptation Middle road & aggressive adaptation Fragmentation & moderate adaptation
Mitigation: Level of global cooperation (e.g. measured in terms of average share of emissions under a global climate target over some period) Low High Medium Low
Mitigation: Start of global cooperation (e.g. the time the first group of countries adopts a global target or an international carbon tax) Never Early Mid Term Late
Mitigation: Sectoral coverage Focus on electricity and industry sectors. No significant inclusion of land use based mitigation options. Carbon pricing on land. Full coverage of energy supply and end use sectors. Forest protection and bioenergy constraints. Energy supply, transport and industry covered. Limited forest protection, no limitation on bioenergy use. Electricity and industry covered.
Adaptation: Capacity building (e.g. measured in terms of the size of a global adaptation fund) Small Moderate Large Moderate
Adaptation: International insurance (e.g. measured in terms of the amount of climate impact insurance available between countries) Only via international markets, with limited access for some countries Insurance available for least developed countries Global insurance provided Only via international markets, with limited access for many countries