UPDATE: Robson has now removed the video, as I suggested, and re-uploaded a corrected version. He does so very begrudgingly, calling it simply a 'revised edition,' with no mention of the error, and even complains about people who pointed out the mistake. He writes:
"This revised version corrects one trivial graphic animation production error that an army of trolls attempted to turn into a cause célèbre."
People often tell me that the scientific method is flawed, pointing to peer-review and retracted papers as weaknesses. They turn instead to YouTube amateurs like Rosbon. But peer review is fact-checking. Papers are retracted because science endeavours to correct mistakes. Flawed at it is, Robson represents the opposite -- the junk science mode, where nothing is fact-checked and mistakes only get corrected if an "army of trolls" press for corrections.
The corrected... sorry, 'revised' version, can be found here:
   • Climate Shipwreck  

(fact-checking) with its emphasis on peer-review fact-checking Robson's attempt to trivialise a very misleading claim, and represent those who pointed out the mistake as "trolls" The 'trivial' mistake was a normal uptick in seasonal ice extent over a few weeks represented as a rise over 20 years. Robson's correction of that error is a step forward, but he is still cherry-picking an individual date and passing it off as a 'trend.'
Will 2024 turn out to be

SOURCES:

John Robson's video can be found here:
   • Video  
You can see our discussion under his pinned statement (but use 'newest' comments not 'top comments' to see it), unless it gets too much attention and he decides to unpin it.

Our discussion (which he deleted) can be seen here:
   • My discussion with John Robson in ful...  

The original NSIDC reconstruction can be found here:
https://nsidc.org/arcticseaicenews/ch...

NOAA's March and September ice extent anomaly since 1979.
https://arctic.noaa.gov/report-card/r...

NASA's minimum ice extent reconstruction since 1979:
https://climate.nasa.gov/vital-signs/...

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