A climate scientist at the University of Reading, Ed Hawkins is an IPCC AR6 Lead Author. He tweeted a couple of days ago:
Months of work by 15 authors with 56 contributing authors, writing 60,000 words (+ 885 references) = 1 finished draft of a single @IPCC_CH Assessment Report chapter. Now over to the hundreds of reviewers. Then we start to edit it all over again…
It stirs my blood to hear about such work. The concerted IPCC work over decades must surely dwarf the feted Manhattan Project in terms of scientific firepower and global criticality. As always, heroes labour hard, extremely hard.