Shared Socioeconomic Pathway

Shared Socioeconomic Pathways (SSPs) are climate change scenarios of projected socioeconomic global changes up to 2100 as defined in the IPCC Sixth Assessment Report on climate change in 2021.[2] They are used to derive greenhouse gas emissions scenarios with different climate policies.[3][4][5] The SSPs provide narratives describing alternative socio-economic developments. These storylines are a qualitative description of logic relating elements of the narratives to each other.[3] In terms of quantitative elements, they provide data accompanying the scenarios on national population, urbanization and GDP (per capita).[6] The SSPs can be quantified with various Integrated Assessment Models (IAMs) to explore possible future pathways both with regards to socioeconomic and climate pathways.[4][5][6] The five scenarios are: https://en.wikipedia.org/wiki/Shared_Socioeconomic_Pathways

• SSP1: Sustainability ("Taking the Green Road")
• SSP2: "Middle of the Road"
• SSP3: Regional Rivalry ("A Rocky Road")
• SSP4: Inequality ("A Road Divided")
• SSP5: Fossil-fueled Development ("Taking the Highway")
• (ah, a 2x2 (level of challenges for mitigation vs adaptation) with SSP2 in the middle)