The document discusses rainbow water, which refers to recycled atmospheric inputs that benefit water supply. It notes that blue water traditionally focuses on rivers and uses, while grey water added pollution. Green water realized the importance of upper watersheds and forests. Rainbow water closes the hydrological cycle and sees evapotranspiration as recycling. The document includes an agenda for a workshop with blocks on new scientific insights, relating findings to climate policy and negotiations, and priorities for linking science to climate action.
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