I was looking for the same, it appears to come from (or be reflected) at least here: https://cpo.noaa.gov/sites/cpo/Reports/2012/NOAA_SLR_r3.pdf https://cpo.no

I was looking for the same, it appears to come from (or be reflected) at least here: https://cpo.noaa.gov/sites/cpo/Reports/2012/NOAA_SLR_r3.pdf https://cpo.noaa.gov/sites/cpo/Reports/2012/NOAA_SLR_r3.pdf Where a SLR of 2m by 2100 is reported as an extreme scenario, presumably (but I can't find it in the text) with very low confidence. They give the following definition of the reasons for the low confidence rating, though: "Inconclusive evidence (limited sources, extrapolations, inconsistent findings, poor documentation and/or methods not tested, etc.), disagreement or lack of opinions among experts".