So what does the new IPCC climate report say about sea-level rise, past and future? Here is my analysis! realclimate.org/index.php/arch…
Re the sea-level acceleration, our German 'climate skeptic' journalist @Axel_Bojanowski claimed it could be an artifact of switching to satellite data. Makes no sense since the tide gauge data continue. The colleagues he cited said he misrepresented them. scilogs.spektrum.de/klimalounge/sp…
Another time he claimed that GPS data had led to a downward correction of the rate of sea-lvel rise from 3.1 to 1.3 mm/yr. A non-sensical apples-to-oranges comparison which apparently originated with notorious climate denialist Pat Michaels. scilogs.spektrum.de/klimalounge/me…
Re tipping points (e.g. ice sheet instabilities) @Axel_Bojanowski claimed a review paper had given the all-clear. The authors of the review paper disagreed strongly, to the extent that 4 of them wrote letters to the paper. 
On the AR6, he made up the senseless conspiracy theory last year that IPCC has given up on paleoclimate data because these don't fit its political agenda. But of course they're all over the AR6 - the chair Valerie Masson-Delmotte is a paleoclimatologist.
https://twitter.com/rahmstorf/status/1291692545215475712?s=20
And he claimed in 2004 that Mike Mann corrected the hockey stick, and the corrected version is that of climate denialists McIntyre and McKittrick... calling into question human influence. I'll stop here, but if need be I can provide quite a few more examples.
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