This briefing paper describes how the G20 could enable a shift of international financial flows to low-carbon and climate-resilient development, as mandated by the Paris Agreement in Article 2.1c.

Despite being a well-established research field, the detection and attribution of observed climate change to anthropogenic forcing is not yet provided as a climate service. One reason for this is the lack of a methodology for performing tailored detection and attribution assessments on a rapid time scale. Here we develop such an approach, based on the translation of quantitative analysis into the “confidence” language employed in recent Assessment Reports of the Intergovernmental Panel on Climate Change.