Fig. 3: Marginal Abatement Cost Curve (MACC) for water quantity and quality management options in 2050 by climate and socio-economic scenarios (RCP2.6-SSP2; RCP8.5-SSP2; RCP8.5-SSP5).
From: Water quality management could halve future water scarcity cost-effectively in the Pearl River Basin
RCP is short for Representative Concentration Pathway. SSP is short for Shared Socio-economic Pathway. Source: Water scarcity is calculated using river discharges and nitrogen pollution in rivers according to ref. 3. The cost-efficiency is calculated based on the cost-optimization model that indicates the total annual costs of cost-effective water scarcity mitigating management options, and the water scarcity abatement of management options. Example: The water transport option reduces water scarcity by 14% with a cost-efficiency of 0.2 $Billion/1% of water scarcity under the RCP2.6-SSP2 scenario. In other words, water transport costs 0.2 $ billion to reduce 1% of water scarcity.
