https://twitter.com/Kenneth72712993/status/1353256080936226816 It appears there are several other analyses of pre-1970s Arctic sea ice that show the same oscillation. Beaufort sea ice lasted 1.1 fewer mos. than modern pre-1940s. Larsen sailed the NW passage back then.https://t.co/47Dyo8khxrhttps://t.co/iI3yxwqy7Bhttps://t.co/PUi8Ci4qbr pic.twitter.com/BG1VwFknVz — Kenneth Richard (@Kenneth72712993) January 25, 2021 "an ice free Arctic" You mean back when CO2 was below 270 … Continue reading Study’s Model Simulations Show Arctic Sea Ice Reached Lowest Point On Modern Record… In The 1940s, Not Today