PMF, CJS, MA, PF, JR, MRC and AP developed the concept of an annual update in discussions with the wider IPCC community over many years. CJS led the work of the data repositories. ABo and JAB led the website development with visualisation support from DR, JMG and ABi. VMD, PZ, SS, JM, CFS, SIS, VN, AP, JYL, NG, FD, GP, BT, MSP, MRC, JR, PF, MA and PT provided important IPCC and UNFCCC framing. PMF coordinated the production of the manuscript with support from DR. WFL led Sect.
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