Antarctic Ice Shelf

DISCLAIMER — Real Ice Shelf Science, Real Regional Contradiction

Why no UTAC/CREP/AFET bridge: not only because the cited literature already provides the necessary quantitative structure -- a deliberate choice. This project's highly speculative AFET/UTAC experiments must never stand in the way of climate/ecology topics being accessible and usable to people who don't work inside that construct and aren't looking for renormalization groups. Real, checkable science, without the burden of an unproven framework. See PACKAGE_REGISTRY.md's "Why no UTAC/CREP/AFET bridge in the climate/ecology series" (2026-08-31) in the GenesisAeon workspace root for the full canonical note.

Status: Real, independently verified science. NO UTAC/CREP/AFET bridge, NO invented Gamma value.

Where this package came from

Built alongside el-nino-amplification-utac (P118) and marine-heatwave-utac (P119), all three surfaced by a single broad DeepResearch pass (2026-08-31). Checked directly against PACKAGE_REGISTRY.md: cascading-tipping-utac (P87) references the West Antarctic Ice Sheet only as one node in a 4-element tipping network (Wunderling et al.), not a standalone quantified treatment of ice-shelf mass loss -- this package fills that gap.

All three citations were independently verified via direct WebFetch against publisher pages, 2026-08-31: pmc.ncbi.nlm.nih.gov for Davison et al. (the original science.org URL for this paper was not attempted directly; the NCBI PMC mirror was used and cross-confirmed via search-result agreement), tc.copernicus.org (resolved directly, open access), and cross-referenced press coverage (nature.com, phys.org, sciencedaily.com, National Institute of Polar Research) for the Nature Geoscience Holocene paper.

Why thi

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antarctic-ice-shelf-utac

GenesisAeon Package 120 — real Antarctic ice shelf mass budget, a real Holocene meltwater-release feedback mechanism, and a real, sign-flipped regional asymmetry under CMIP6 projections. Deliberately has no UTAC/CREP/AFET bridge — see DISCLAIMER.md.

For a plain-language explanation of the same topic (German, no jargon, written for general audiences), see WHITEPAPER.md.

Where this package came from

Built alongside el-nino-amplification-utac (P118) and marine-heatwave-utac (P119) from a single broad DeepResearch pass (2026-08-31). cascading-tipping-utac (P87) only references WAIS as one node in a tipping-element network, not a standalone quantified treatment — this package fills that gap.

What's real here

• Davison et al. (2023, Science Advances)* — of 162 Antarctic ice
• shelves studied 1997-2021, 71 lost mass (48 lost more than 30% of
• their initial mass), 29 gained, 62 showed no significant change.
• Total loss: 8.3 trillion tonnes. Basal melting was the dominant
• driver (68%). West Antarctica predominantly lost mass; East
• Antarctica predominantly stayed stable or gained.
• Nature Geoscience (2025) — sediment-record and ocean-model
• evidence for a real, self-reinforcing meltwater-release feedback that
• drove an ice-shelf collapse ~9000 years ago: meltwater strengthens
• stratification, which enhances warm deep-water inflow, which
• accelerates melting, which releases more meltwater.
• Muilwijk et al. (2026, The Cryosphere)* — 10 CMIP6 models under
• a standardized meltwater perturbation show **opposite-sign regional
• responses**: East Antarctica's feedback amplifies warming (+0.16 to
• +0.26 degC median, up to +0.82 degC by 2100 under SSP5-8.5), while
• the Amundsen/Bellingshausen sectors of West Antarctica show
• cooling or suppressed warming (-0.5 to -1.5 degC).

Deliberately not one-sided

do_east_and_west_responses_share_the_same_sign() returns False — the CMIP6 regional finding directly complicates a naive "meltwater feedback always accelerates melting everywhere" reading of the Holocene mechanism documented alongside it. Both are real findings, kept explicit rather than smoothed into one narrative.

v2.0.0 (2026-09-03): six more real mechanisms

Following a Johann brainstorm prompted by a coral-reef article, six independent research passes each verified a real, citable mechanism:

• Subglacial hydrology — Wilson et al. (2025, Nat. Commun.): 85
• newly detected active subglacial lakes (known inventory +58%), median
• drainage 2.2yr / recharge 3.5yr, 6 within 8km of the grounding zone.
• Dow et al. (2022, Nat. Geosci.): a 460km high-pressure subglacial
• river system. Physically distinct from the ice-shelf basal m

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