Work by the scientific community is also expected to produce quantitative scenarios of socio-economic changes, including changes in demographics, technology, energy and land-use consistent with the RCP pathways. Note that RCPs in themselves are not linked to any one socio-economic scenario: each RCP is consistent with many socio-economic scenarios because different socio-economic futures could give rise to similar changes in atmospheric composition. Because not all socio-economic changes are amenable to quantification, collaboration between the IAM and IAV communities will produce qualitative storylines or narratives that aim to represent the different socio-economic futures that may be combined with different RCPs.